CREDENCE SYSTEMS CORP
DEF 14A, 2000-02-24
INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS
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                            SCHEDULE 14A INFORMATION
          Proxy Statement Pursuant to Section 14(a) of the Securities
                      Exchange Act of 1934 (Amendment No. )

Filed by Registrant /X/
Filed by a Party other than the Registrant / /
Check the appropriate box:
/ / Preliminary Proxy Statement            / / Confidential, for Use of the
                                               Commission only (as permitted by
                                               Rule 14a-6(e)(2))
/X/ Definitive Proxy Statement
/ / Definitive Additional Materials
/ / Soliciting Material Pursuant to Section 240.14a-11(c) or Section 240.14a-12

                          Credence Systems Corporation
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)
- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):
/X/ No Fee required
/ / $125 per Exchange Act Rules 0-11(c)(1)(ii), 14a-6(i)(2) or Item 22(a)(2)
    of Schedule 14A.
/ / Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

    1) Title of each class of Securities to which transaction applies:
    --------------------------------------------------------------------------
    2) Aggregate number of securities to which transaction applies:
    --------------------------------------------------------------------------
    3) Per unit price or other underlying value of transaction computed
       pursuant to Exchange Act Rule 0-11 (set forth the amount on which
       the filing fee is calculated and state how it was determined):
    --------------------------------------------------------------------------
    4) Proposed maximum aggregate value of transaction:
    --------------------------------------------------------------------------
    5) Total fee paid:
    --------------------------------------------------------------------------
/ / Fee paid previously with preliminary materials.

/ / Check box if any part of the fee is offset as provided by Exchange Act Rule
    0-11(a)(2) and identify the filing for which the offsetting fee
    was paid previously. Identify the previous filing by registration statement
    number, or the Form of Schedule and the date of its filing.

    (1) Amount Previously Paid:________________________________________________
    (2) Form, Schedule or Registration Statement No.:__________________________
    (3) Filing Party:__________________________________________________________

    (4) Date Filed:____________________________________________________________

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                                     [LOGO]

                          CREDENCE SYSTEMS CORPORATION
                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
                          TO BE HELD ON MARCH 22, 2000

TO OUR STOCKHOLDERS:

       NOTICE IS HEREBY GIVEN that the Annual Meeting of Stockholders (the
"Annual Meeting") of Credence Systems Corporation (the "Company"), a Delaware
corporation, will be held on Wednesday, March 22, 2000, at 10:00 a.m. local
time, at the Company's headquarters at 215 Fourier Avenue, Fremont, California
94539, for the following purposes, as more fully described in the Proxy
Statement accompanying this Notice:

     1.   To elect two directors to serve for three-year terms ending in 2003 or
          until their respective successors are elected and qualified;

     2.   To approve an amendment to the Company's certificate of incorporation
          to increase the number of shares of Common Stock authorized for
          issuance thereunder by an additional 110,000,000 shares to a total of
          150,000,000 shares of Common Stock.

     3.   To approve a series of amendments to the Company's 1993 Stock Option
          Plan (the "1993 Plan") which will (i) increase the number of shares of
          Common Stock reserved for issuance under the Plan by an additional
          500,000 shares, (ii) revise the automatic share increase provisions so
          that the number of shares of Common Stock reserved under the 1993 Plan
          will automatically increase on the first trading day of each fiscal
          year, beginning November 1, 2000, by an amount equal to 3.5% of the
          total number of shares of the Company's Common Stock outstanding on
          the last day of the immediately preceding fiscal year, but no such
          annual increase is to exceed 1,500,000 shares, (iii) increase the
          number of shares of Common Stock subject to the option grants to be
          made to the continuing non-employee Board members under the Automatic
          Option Grant Program from 5,000 shares to 10,000 shares, effective as
          of the Annual Meeting, and (iv) extend the term of the 1993 Plan from
          August 30, 2003 to December 31, 2004.

     4.   To approve a series of amendments to the Company's 1994 Employee Stock
          Purchase Plan (the "Purchase Plan") which will (i) implement an
          automatic share increase feature whereby the number of shares of
          Common Stock reserved under the Purchase Plan will automatically
          increase on the first trading day of each fiscal year, beginning
          November 1, 2000, by an amount equal to 0.5% of the total number of
          shares of the Company's Common Stock outstanding on the last day of
          the immediately preceding fiscal year, but no such annual increase is
          to exceed 250,000 shares, (ii) revise the offering periods in effect
          under the Purchase Plan so that each such period may have a maximum
          duration of 12 months, with purchases occurring at 6-month intervals
          during the offering period on the 14th day of February and August each
          year, and (iii) extend the termination date of the Purchase Plan to
          August 14, 2010.

     5.   To ratify the appointment of Ernst & Young LLP as independent auditors
          of the Company for the fiscal year ending October 31, 2000; and

     6.   To transact such other business as may properly come before the
          meeting or any adjournment or postponement thereof.

     Only stockholders of record at the close of business on February 4, 2000
are entitled to notice of and to vote at the Annual Meeting. The stock transfer
books will not be closed between the record date and the date of the meeting. A
list of stockholders entitled to vote at the Annual Meeting will be available
for inspection at the executive offices of the Company for a period of ten days
before the Annual Meeting.
<PAGE>


     All stockholders are cordially invited to attend the meeting in person.
Whether or not you plan to attend, please sign and return the enclosed Proxy as
promptly as possible in the envelope enclosed for your convenience. Should you
receive more than one proxy because your shares are registered in different
names and addresses, each proxy should be signed and returned to assure that all
your shares will be voted. You may revoke your proxy at any time prior to the
Annual Meeting. If you attend the Annual Meeting and vote by ballot, your proxy
will be revoked automatically and only your vote at the Annual Meeting will be
counted.

                                       Sincerely,

                                       /s/ GRAHAM J. SIDDALL
                                       --------------------------------------
                                       Dr. Graham J. Siddall
                                       President and CEO

February 28, 2000
Fremont, California

YOUR VOTE IS VERY IMPORTANT, REGARDLESS OF THE NUMBER OF SHARES YOU OWN. PLEASE
READ THE ATTACHED PROXY STATEMENT CAREFULLY, AND COMPLETE, SIGN AND DATE THE
ENCLOSED PROXY CARD AS PROMPTLY AS POSSIBLE AND RETURN IT IN THE ENCLOSED
ENVELOPE.
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                                 PROXY STATEMENT

                                TABLE OF CONTENTS


                                                                            PAGE


Proxy Statement.... ...........................................................1

Matters to Be Considered at Annual Meeting... .................................3

Proposal One--Election of Directors........... ................................3

Proposal Two--Approval of Amendment and Restatement of
Restated Certificate of Incorporation.......... ...............................6

Proposal Three--Approval of Amendments to 1993 Stock Option Plan...............8

Proposal Four--Approval of Amendment to 1994
Employee Stock Purchase Plan..................................................17

Proposal Five--Ratification of Independent Auditors...........................22

Other Matters.................................................................22

Ownership of Securities.......................................................23

Executive Compensation and Related Information................................24

Certain Relationships and Related Transactions................................29

Compensation Committee Report.................................................29

Comparison of Stockholder Return..............................................33

Compliance With Section 16(a) of the Securities Exchange Act of 1934..........34

Annual Report.................................................................34

Form 10-K.....................................................................34


                                        i
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                                     [LOGO]

                          CREDENCE SYSTEMS CORPORATION
                               215 FOURIER AVENUE
                            FREMONT, CALIFORNIA 94539

                                 PROXY STATEMENT
                     FOR THE ANNUAL MEETING OF STOCKHOLDERS
                          TO BE HELD ON MARCH 22, 2000

GENERAL

       The enclosed proxy ("Proxy") is solicited on behalf of the Board of
Directors of Credence Systems Corporation, a Delaware corporation (the
"Company"), for use at the Annual Meeting of Stockholders to be held on March
22, 2000 (the "Annual Meeting"). The Annual Meeting will be held at 10:00 a.m.
at the Company's headquarters at 215 Fourier Avenue, Fremont, California 94539.
These proxy solicitation materials were mailed on or about February 28, 2000 to
all stockholders entitled to vote at the Annual Meeting.

VOTING

       The specific proposals to be considered and acted upon at the Annual
Meeting are summarized in the accompanying Notice and are described in more
detail in this Proxy Statement. On February 4, 2000, the record date for
determination of stockholders entitled to notice of and to vote at the Annual
Meeting, approximately 22,532,768 shares of the Company's common stock, $.001
par value ("Common Stock"), were issued and outstanding. No shares of the
Company's preferred stock were outstanding. Each stockholder is entitled to one
vote for each share of Common Stock held by such stockholder on February 4,
2000. The election of directors is by plurality vote, and the two candidates
receiving the highest number of affirmative votes will be elected. The proposal
to amend the certificate of incorporation requires the affirmative vote of a
majority of the outstanding common stock. Each of the other matters submitted
for stockholder approval at this Annual Meeting will be decided by the
affirmative vote of a majority of the shares present in person or represented by
proxy and entitled to vote on each such matter. Abstentions with respect to any
matter are treated as shares present or represented and entitled to vote on that
matter and thus have the same effect as negative votes. If shares are not voted
by the broker who is the record holder of the shares, or if shares are not voted
in other circumstances in which proxy authority is defective or has been
withheld with respect to any matter, these non-voted shares are not deemed to be
present or represented for purposes of determining whether stockholder approval
of that matter has been obtained, but are counted for quorum purposes.

PROXIES

       If the enclosed form of proxy is properly signed and returned, the shares
represented thereby will be voted at the Annual Meeting in accordance with the
instructions specified thereon. If the proxy does not specify how the shares
represented thereby are to be voted, the proxy will be voted FOR the approval of
Proposals 1, 2, 3, 4 and 5 described in the accompanying Notice and Proxy
Statement. You may revoke or change your Proxy at any time before the Annual
Meeting by filing with the Secretary of the Company, at the Company's principal
executive offices, a notice of revocation or another signed Proxy with a later
date. You may also revoke your Proxy by attending the Annual Meeting and voting
in person.

SOLICITATION

       The Company will bear the entire cost of solicitation, including the
preparation, assembly, printing and mailing of this Proxy Statement, the Proxy
and any additional solicitation materials furnished to stockholders. Copies of
solicitation materials will be furnished to brokerage houses, fiduciaries, and
custodians holding shares in their names that are beneficially owned by others
so that they may forward this solicitation material to such beneficial owners.
In addition, the Company may reimburse such persons for their costs in
forwarding the solicitation materials
<PAGE>

to such beneficial owners. The original solicitation of proxies by mail may be
supplemented by a solicitation by telephone, telegram, or other means by
directors, officers or employees. No additional compensation will be paid to
these individuals for any such services. Except as described above, the Company
does not presently intend to solicit proxies other than by mail.

DEADLINE FOR RECEIPT OF STOCKHOLDER PROPOSALS

     Proposals of stockholders of the Company that are intended to be presented
by such stockholders at the Company's 2001 Annual Meeting must be received no
later than November 1, 2000, in order that they may be included in the proxy
statement and form of proxy relating to that meeting. In addition, the proxy
solicited by the Board for the 2001 Annual Meeting will confer discretionary
authority to vote on any stockholder proposal presented at that meeting, unless
the Company receives notice of such proposal not later than January 14, 2001.


                                        2
<PAGE>


                   MATTERS TO BE CONSIDERED AT ANNUAL MEETING

                       PROPOSAL ONE--ELECTION OF DIRECTORS

GENERAL

     The Company's Certificate of Incorporation provides for a classified Board
of Directors (the "Board") consisting of three classes of directors having
staggered three-year terms, with each class consisting, as nearly as possible,
of one-third of the total number of directors. The Board currently consists of
six persons. The class whose term of office expires at the Annual Meeting
currently consists of two directors. The directors elected to this class will
serve for a term of three years, expiring at the 2003 annual meeting of
stockholders or until their respective successors have been elected and
qualified. All nominees are currently directors of the Company with terms
expiring at the Annual Meeting.

     Both nominees for election have agreed to serve if elected, and management
has no reason to believe that either nominee will be unavailable to serve. In
the event either nominee is unable or declines to serve as a director at the
time of the Annual Meeting, the proxies will be voted for any nominee who may be
designated by the present Board of Directors to fill the vacancy. Unless
otherwise instructed, the proxy holders will vote the proxies received by them
FOR the nominees named below. The two candidates receiving the highest number of
affirmative votes of the shares represented and voting on this particular matter
at the Annual Meeting will be elected directors of the Company, to serve their
respective terms and until their respective successors have been elected and
qualified.

NOMINEES FOR TERM ENDING UPON THE 2003 ANNUAL STOCKHOLDERS' MEETING

     HENK J. EVENHUIS, 56, has served as a Director of the Company since
September 1993. Mr. Evenhuis is currently serving as Executive Vice President
and CFO of Fair, Issac and Company, Inc., a decision analytic software company,
since October 1999. From June 1997 to October 1999, he was a consultant to the
semiconductor industry. Prior to that, he served as Executive Vice President and
CFO of Lam Research Corporation ("Lam"), a semiconductor capital equipment
manufacturer from April 1987 to June 1997. From 1983 to 1987, Mr. Evenhuis
served as Chief Financial Officer of Ferix Corporation, Trimedia Corporation and
Corvus Systems, Inc.

     BERNARD V. VONDERSCHMITT, 76, has served as a Director of the Company since
August 1993. Mr. Vonderschmitt co-founded Xilinx, Inc. ("Xilinx") in February
1984. Mr. Vonderschmitt has been the Chairman of the Board of Xilinx since
January 22, 1996 and served as Chief Executive Officer of Xilinx from February
1984 to January 21, 1996. From 1981 to 1984, he was Vice President of the
Microprocessor Division of Zilog, Inc., a semiconductor manufacturer. Mr.
Vonderschmitt held various management positions at RCA Corporation for 20 years,
most recently as the Vice President of the Solid State Division. Mr.
Vonderschmitt serves on the boards of directors of Xilinx, International
Microelectronics Products, Inc. and Sanmina Corporation, as well as several
private companies.

CONTINUING DIRECTORS FOR TERM ENDING UPON THE 2001 ANNUAL STOCKHOLDERS' MEETING

     JOS C. HENKENS, 47, has served as a Director of the Company since February
1985. Mr. Henkens has been a general partner of Advanced Technology Ventures, a
venture capital firm, since January 1983. Mr. Henkens also serves on the boards
of directors of Actel Corporation, a semiconductor manufacturer and various
private companies.

     WILLIAM G. HOWARD, JR., 58, has served as a Director of the Company since
February 1995, as Chairman of the Board since December 1998 and as interim Chief
Executive Officer from December 1998 to July 1999. Dr. Howard has been a
self-employed consultant for various semiconductor and microelectronics
companies since December 1990. From October 1987 to December 1990, Dr. Howard
was a senior fellow at the National Academy of Engineering conducting studies of
technology management. Dr. Howard held various management positions at Motorola,
Inc. between 1969 to 1987, most recently as Senior Vice President and Director
of Research and Development. Dr. Howard serves on the boards of directors of BEI
Electronics, Inc., Ramtron International, Inc. and Xilinx as well as several
private companies.


                                        3
<PAGE>

CONTINUING DIRECTORS FOR TERM ENDING UPON THE 2002 ANNUAL STOCKHOLDERS' MEETING

     GRAHAM J. SIDDALL, 53, has served as a Director, President and Chief
Executive Officer of the Company since July 1999. Dr. Siddall was the Executive
Vice President of the Wafer Inspection Group at KLA-Tencor Corp. ("KLA-Tencor")
from May 1997 until May 1999. From December 1995 until May 1997, he was the
Chief Operating Officer of Tencor Instruments, Inc. ("Tencor") prior to its
merger with KLA Instruments. From November 1994 to December 1995, Dr. Siddall
was the Senior Vice President for the Wafer Inspection Division at Tencor. Dr.
Siddall joined Tencor as a vice president in 1988. Prior to joining Tencor, Dr.
Siddall served in a number of key roles at GCA Corporation, Hewlett-Packard
Laboratories and Rank Taylor Hubson.


     JON D. TOMPKINS, 59, has served as a Director of the Company since
September 1999. Mr. Tompkins was Chairman of the Board of Directors for
KLA-Tencor from July 1998 to June 30, 1999. From April 1997 until July 1998, he
was Chief Executive Officer of KLA-Tencor. From April 1991 to April 1997, he was
President and Chief Executive Officer of Tencor prior to its merger with KLA
Instruments. He was a Director of Tencor from 1991 until April 1997 and was
appointed Chairman of the Board of Directors of Tencor in November 1993. He
currently serves on the Boards of Directors of KLA-Tencor, Cymer, Electro
Scientific Industries, Levelite, LogicVision, Inc., and the Community Foundation
of Silicon Valley.

BOARD COMMITTEES AND MEETINGS

     During the fiscal year ended October 31, 1999, the Board of Directors held
10 meetings and acted by unanimous written consent on one occasion. The Board of
Directors has an Audit Committee and a Compensation Committee. Each of the
directors attended or participated in 75% or more of the aggregate of (i) the
total meetings of the board of directors (held during the period he served) and
(ii) the total number of meetings held by all committees on which he served
(held during the period he served) during the past fiscal year.

     The Audit Committee currently consists of three directors, Mr. Henkens, Mr
Evenhuis and Mr. Tompkins, and is primarily responsible for approving the
services performed by the Company's independent auditors and reviewing their
reports regarding the Company's accounting practices and systems of internal
accounting controls. The Audit Committee held 3 meetings during the last fiscal
year and did not act by unanimous written consent.

     The Compensation Committee currently consists of two directors, Mr.
Tompkins and Mr. Vonderschmitt, and is primarily responsible for reviewing and
approving the Company's general compensation policies and setting compensation
levels for the Company's executive officers. The Compensation Committee also has
the exclusive authority to administer the Company's 1994 Employee Stock Purchase
Plan and the Company's 1993 Stock Option Plan and to make option grants
thereunder. The Compensation Committee held 7 meetings during the last fiscal
year and acted by unanimous written consent on 6 occasions.

     During fiscal 1999, Messrs. Henkens and Vonderschmitt and, for a portion of
the year, Dr. Howard, served on the Compensation Committee. During fiscal 1999,
Messrs. Henkens and Evenhuis served on the Audit Committee.

DIRECTOR COMPENSATION

     As of the date of each Annual Stockholders Meeting, each non-employee Board
member who is to continue to serve as such following such meeting will receive
an annual retainer fee of $10,000 which will be paid in four equal quarterly
installments. In addition, each non-employee Board member is paid $1,000 per
Board and committee meeting attended, and also is reimbursed for his expenses in
connection with attendance at Board and committee meetings.

     Each non-employee director will, at the time of his or her initial election
or appointment to the Board, receive an option grant for 10,000 shares of the
Common Stock under the automatic option grant program in effect for non-employee
Board members under the Company's 1993 Stock Option Plan. In addition, at each
Annual Stockholders Meeting, each individual who is to continue to serve as a
non-employee Board member, whether or not he is standing for re-election at that
particular meeting, will be granted an option to purchase additional shares of
common stock, provided such individual has served as a non-employee Board member
for at least six months. For annual grants made prior to the 2000 Annual
Meeting, the number of shares subject to each such grant was 5,000 shares. If
the stockholders approve Proposal Three at the Annual Meeting, then the number
of shares subject to each such annual grant will be increased to 10,000 shares,
effective with the grants to be made at the March 22, 2000


                                       4
<PAGE>


Annual Meeting. Each grant under the automatic option grant program will have an
exercise price per share equal to the fair market value per share of common
stock on the grant date and will have a maximum term of ten years, subject to
earlier termination should the optionee cease to serve as a Board member.

     Pursuant to the automatic option grant program, a stock option for 5,000
shares of Common Stock was granted on March 24, 1999, the date of the 1999
Annual Stockholders Meeting, to each of the following individuals who continued
to serve as non-employee Board members following that Annual Meeting: Mr.
Evenhuis, Mr. Henkens and Mr. Vonderschmitt. Because Dr. Howard was an
employee-member of the Board at that time, he did not receive such an automatic
option grant. Each option has an exercise price of $20.00 per share and will
become exercisable in four successive equal annual installments over the
optionee's period of continued Board service, measured from the grant date.
However, each such option will immediately vest and become exercisable for all
the option shares upon (i) an acquisition of the Company by merger or asset
sale, (ii) a hostile takeover of the Company or (ii) the optionee's death or
disability while continuing to serve as a Board member. For further information
concerning the terms and conditions of these option grants and the automatic
option grant program, please see the summary of the Automatic Option Grant
Program in Proposal Three below.

RECOMMENDATION OF THE BOARD OF DIRECTORS

     The Board of Directors recommends that the stockholders vote FOR the
election of each of the above nominees.


                                       5
<PAGE>


         PROPOSAL TWO--APPROVAL OF AMENDMENT AND RESTATEMENT OF RESTATED
                          CERTIFICATE OF INCORPORATION


     The present capital structure of the Company authorizes 40,000,000 shares
of Common Stock and 1,000,000 shares of preferred stock. The Board of Directors
believes this capital structure is inadequate for the present and future needs
of the Company. Therefore, the Board of Directors has unanimously approved the
amendment and restatement of the Company's Restated Certificate of Incorporation
to increase the number of shares of Common Stock authorized by Article 4 to
150,000,000 shares (and a concomitant increase in the total number of shares
authorized for issuance from 41,000,000 to 151,000,000). The Board believes this
capital structure more appropriately reflects the present and future needs of
the Company and recommends such amendment and restatement to the Company's
stockholders for adoption. The undesignated preferred stock may be issued from
time to time in one or more series with such rights, preferences and privileges
as may be determined by the Board of Directors. On December 31, 1999, 22,516,842
shares of Common Stock were outstanding and no shares of preferred stock were
outstanding. The total number of shares outstanding excludes:

     -    2,974,426 shares of Common Stock subject to outstanding options as of
          December 31, 1999;

     -    623,879 shares that are available for future grant under our 1993
          Stock Option Plan as of December 31, 1999;

     -    253,042 shares that are available for future issuance under our 1994
          Employee Stock Purchase Plan as of December 1999;

     -    1,397,108 shares of Common Stock issuable upon conversion of our
          convertible subordinated notes due September 15, 2002; and

     -    up to 2,300,000 shares of Common Stock which may be issued in a public
          offering in February, 2000


PURPOSE OF AUTHORIZING ADDITIONAL COMMON STOCK


     Authorizing an additional 110,000,000 shares of Common Stock would give the
Board of Directors the express authority, without further action of the
stockholders, to issue such Common Stock from time to time as the Board of
Directors deems necessary. The Board of Directors believes it is necessary to
have the ability to issue such additional Common Stock for general corporate
purposes. Potential uses of additional authorized shares may include acquisition
transactions, equity or convertible debt financings, stock dividends or
distributions, issuance of options pursuant to the Company's 1993 Stock Option
Plan and issuances of Common Stock pursuant to the Company's 1994 Employee Stock
Purchase Plan without further action by the stockholders, unless such action
were specifically required by applicable law or rules of any stock exchange on
which the Company's securities may then be listed. The Company is not committed
to issue any shares of Common Stock which are the subject of this Proposal.


     The proposed increase in the authorized number of shares of Common Stock
could have a number of effects on the Company's stockholders depending upon the
exact nature and circumstances of any actual issuances of authorized but
unissued shares. The increase could have an anti-takeover effect, in that
additional shares could be issued (within the limits imposed by applicable law)
in one or more transactions that could make a change in control or takeover of
the Company more difficult. For example, additional shares could be issued by
the Company so as to dilute the stock ownership or voting rights of persons
seeking to obtain control of the Company. Similarly, the issuance of additional
shares to certain persons allied with the Company's management could have the
effect of making it more difficult to remove the Company's current management by
diluting the stock ownership or voting rights of persons seeking to cause such
removal. In addition, an issuance of additional shares by the Company could have
an effect on the potential realizable value of a stockholder's investment. In
the absence of a proportionate increase in the Company's earnings and book
value, an increase in the aggregate number of outstanding shares would dilute
the earnings per share and book value per share of all outstanding shares of the
Company's Common Stock. If such factors were reflected in the price per share of
Common Stock, the potential realizable value of a stockholder's investment could
be adversely affected. The Common Stock carries no preemptive rights to purchase
additional shares. The adoption of the amendment will not of itself cause any
change in the capital accounts of the Company.


     The proposed amendment and restatement of the Company's Restated
Certificate of Incorporation was approved by the Board on December 8, 1999.



                                       6
<PAGE>

STOCKHOLDER APPROVAL

       The affirmative vote of a majority of the outstanding voting shares of
the Company entitled to vote on this proposal is required for approval of the
amendment and restatement of the Company's Restated Certificate of Incorporation
authorizing 110,000,000 additional shares of Common Stock (and a concomitant
increase in the total number of shares authorized for issuance from 41,000,000
to 151,000,000).

RECOMMENDATIONS OF THE BOARD OF DIRECTORS

       The Board of Directors recommends that the stockholders vote FOR the
amendment and restatement of the Company's Restated Certificate of Incorporation
authorizing 110,000,000 additional shares of Common Stock (and a concomitant
increase in the total number of shares authorized for issuance from 41,000,000
to 151,000,000).


                                       7
<PAGE>

        PROPOSAL THREE--APPROVAL OF AMENDMENTS TO 1993 STOCK OPTION PLAN

     The Company's stockholders are being asked to approve a series of
amendments to the Company's 1993 Stock Option Plan (the "1993 Plan") which will
effect the following changes: (i) increase the number of shares of Common Stock
reserved for issuance under the Plan by an additional 500,000 shares, (ii)
revise the automatic share increase provisions of the 1993 Plan so that the
share reserve will increase automatically on the first trading day of each
fiscal year over the remaining term of the 1993 Plan, commencing with the fiscal
year beginning November 1, 2000, by an amount equal to 3.5% of the total number
of shares of Common Stock outstanding on the last day of the immediately
preceding fiscal year, but in no event will any such annual increase exceed
1,500,000 shares, subject to adjustment for stock splits, stock dividends and
similar transactions, (iii) increase the number of shares of Common Stock for
which continuing non-employee Board members are to be granted stock options at
each Annual Stockholders Meeting, beginning with the 2000 Annual Meeting, from
5,000 shares to 10,000 shares per non-employee Board member, and (iv) extend the
term of the 1993 Plan from August 30, 2003 to December 31, 2004.

     The amendment authorizing the 500,000-share increase was adopted by the
Board on February 9, 2000, and the other amendments were adopted by the Board on
December 8, 1999. The amendments are subject to stockholder approval at the
Annual Meeting. The 500,000-share increase, the revision to the automatic share
increase feature and the extension of the term of the 1993 Plan are each
designed to assure that a sufficient reserve of Common Stock will continue to be
available under the 1993 Plan to attract and retain the services of key
individuals essential to the Company's long-term growth and success. The
increase to the number of shares subject to the annual option grants made to the
non-employee Board members will allow the Company to provide a more meaningful
equity incentive to attract and retain highly-qualified individuals to serve as
non-employee Board members.

     The following is a summary of the principal features of the 1993 Plan,
together with the applicable tax and accounting implications, which will be in
effect if the amendment to the 1993 Plan is approved by the stockholders. The
summary, however, does not purport to be a complete description of all the
provisions of the 1993 Plan. Any stockholder of the Company who wishes to obtain
a copy of the actual plan document may do so upon written request to the
Corporate Secretary at the Company's principal executive offices in Fremont,
California.

EQUITY INCENTIVE PROGRAMS

     The 1993 Plan contains two separate components: (i) a discretionary grant
program under which key employees (including officers), consultants and
non-employee Board members may be granted options to purchase shares of Common
Stock at an exercise price not less than the fair market value of those shares
on the grant date and (ii) an automatic grant program under which options will
automatically be granted at periodic intervals to the non-employee Board members
to purchase shares of Common Stock at an exercise price equal to the fair market
value of the option shares on the grant date. Options may be granted under the
discretionary program as either incentive stock options designed to meet the
requirements of Section 422 of the Internal Revenue Code or non-statutory
options not intended to satisfy such requirements. All grants under the
automatic program will be non-statutory options.

ELIGIBILITY

     Employees (including officers), non-employee Board members and independent
consultants are eligible to participate in the discretionary grant program,
whether they are in the employ or service of the Company or any parent or
subsidiary corporation now or subsequently existing. As of December 31, 1999,
approximately 744 employees (including three executive officers) and five
non-employee Board members were eligible to participate in the discretionary
program. Four non-employee Board members were also eligible to participate in
the automatic grant program for the Annual Meeting to be held on March 22, 2000
and five non-employee Board members will be eligible to participate in such
program thereafter.

       Dr. William G. Howard is not eligible to receive an option grant under
the automatic grant program at the 2000 Annual Meeting, due to the fact that Dr.
Howard served as interim Chief Executive Officer of the Company until July 29,
1999 and was paid as an employee of the Company until October 9, 1999. However,
the Compensation Committee of the Board has indicated its intent to grant Dr.
Howard a stock option on March 22, 2000 to purchase 10,000 shares of Common
Stock under the discretionary option grant program upon the same terms as the
option

                                       8
<PAGE>

grants to be made at the 2000 Annual Meeting to the continuing
non-employee Board members pursuant to the provisions of the automatic grant
program, provided the amendment to that program which forms part of this
Proposal is approved by stockholders.

SHARE RESERVE

     6,969,119 shares of Common Stock have been reserved for issuance over the
term of the 1993 Plan, including the 436,300 shares added to the reserve on
November 1, 1999 pursuant to the existing automatic share increase provisions of
the 1993 Plan and the 500,000-share increase which forms part of this Proposal.
As of December 31, 1999, options for 2,974,426 shares were outstanding under the
1993 Plan, options for 2,870,814 shares had been exercised, and 623,879 shares
were available for future option grant. An additional 500,000 shares will
immediately become available for future option grant upon stockholder approval
of this Proposal.

     If this Proposal is approved, then the automatic share increase provisions
of the 1993 Plan will be revised so that the number of shares of Common Stock
reserved for issuance under the 1993 Plan will automatically increase on the
first trading day of each fiscal year, commencing with the fiscal year beginning
November 1, 2000, by an amount equal to 3.5% of the total number of shares of
Common Stock outstanding on the last trading day of the immediately preceding
fiscal year. However, no such annual increase will exceed 1,500,000 shares of
Common Stock, subject to adjustment for stock dividends, stock splits and
similar transactions.

     Prior to such revision of the automatic share increase feature, the number
of shares of Common Stock reserved for issuance under the 1993 Plan was
automatically to increase on the first trading day of each fiscal year, from
fiscal year 1999 through fiscal year 2003, by an amount equal to two percent
(2%) of the total number of shares outstanding on the last trading day of the
immediately preceding fiscal year. However, each such annual increase was to be
reduced to the extent necessary to assure that the number of shares of Common
Stock subject to the outstanding options under the Company's stock option plans,
when added to the number of shares available for future option grant under those
plans after taking the annual increase to the 1993 Plan into effect
(collectively, the "Option Shares"), was not to exceed 15% of (i) the number of
voting shares of the Company's capital stock outstanding at that time plus (ii)
the Option Shares. Pursuant to such feature, the share reserve under the 1993
Plan increased by 407,818 shares on November 1, 1998 and an additional 436,300
shares on November 1, 1999.

     Should an outstanding option expire or terminate for any reason prior to
exercise in full (including options cancelled in accordance with the
cancellation-regrant provisions described below), the shares subject to the
portion of the option not so exercised will be available for subsequent option
grant under the 1993 Plan. Unvested shares issued under the 1993 Plan and
subsequently repurchased by the Company at the original option exercise price
paid per share will be added back to the share reserve and will accordingly be
available for subsequent issuance under the 1993 Plan. Shares subject to any
option surrendered in accordance with the stock appreciation right provisions of
the 1993 Plan will not be available for subsequent issuance.

     No participant in the 1993 Plan may be granted stock options and separately
exercisable stock appreciation rights under the 1993 Plan for more than
1,000,000 shares in the aggregate, exclusive, however, of any stock options or
stock appreciation rights granted to such individual prior to January 1, 1995.

                                       9
<PAGE>


OPTION GRANTS

     The table below shows, as to the Company's Chief Executive Officer and each
of the other named executive officers in the Summary Compensation Table and the
various indicated groups, the number of shares of Common Stock subject to the
stock options granted under the 1993 Plan from November 1, 1998 through December
31, 1999 and the weighted average exercise price payable per share. The number
of shares and weighted average exercise price calculations include all options
which were granted during the indicated period including options granted on
December 14, 1998 at a lower exercise price per share as regrants of options
cancelled on that date.


<TABLE>
<CAPTION>
                                                                                                   WEIGHTED AVERAGE
                                                                              NUMBER OF            EXERCISE PRICE OF
                      NAME AND POSITION                                    OPTION SHARES(8)         GRANTED OPTIONS
- -----------------------------------------------------------------------    -----------------     --------------------
<S>                                                                           <C>                       <C>
William G. Howard, Jr. (1)...........................................            15,100                 $19.95
   Interim Chief Executive Officer and Chairman of the Board
Graham J. Siddall (2)................................................           500,000                 $37.50
   President and Chief Executive Officer
Dennis P. Wolf (3) (4)...............................................           210,100                 $23.49
   Executive Vice President, Chief Financial Officer and Secretary
David A. Ranhoff (4) (5).............................................           220,100                 $24.17
   Chief Operating Officer and Executive Vice President,
   Sales and Marketing
Wilmer R. Bottoms (6)................................................                --                     --
All current executive officers as a group (three persons) (7)........           930,200                 $31.34
All current directors (other than executive officers) as a group
   (five persons)....................................................            40,100                 $24.96
All employees eligible under the 1993 Plan, including current
   officers who are not executive officers, as a group (736 persons).         2,140,790                 $29.14
</TABLE>

- ------------

(1)  Dr. Howard was appointed to the position of Chairman of the Board on
     December 8, 1998 and served as interim Chief Executive Officer of the
     Company from December 1998 until July 29, 1999 and as an employee until
     October 9, 1999.

(2)  Dr. Siddall was appointed to the positions of President and Chief Executive
     Officer on July 29, 1999.

(3)  Mr. Wolf was promoted to Executive Vice President on December 8, 1998.

(4)  Mr. Ranhoff and Mr. Wolf were named to the Office of the President on
     December 8, 1998. On July 29, 1999, the Office of the President was
     dissolved upon the appointment of Dr. Siddall to the position of President
     and Chief Executive Officer.

(5)  Mr. Ranhoff was appointed to the position of Chief Operating Officer
     effective November 1, 1999.

(6)  Dr. Bottoms resigned as chairman, member of the Board and Chief Executive
     officer on December 8, 1998.

(7)  Excludes Dr. Howard, who stopped serving as interim Chief Executive Officer
     on July 29, 1999 and resigned as an employee on October 9, 1999.

(8)  Number of option shares includes the shares subject to options granted
     during the indicated period and subsequently cancelled on December 14, 1998
     in connection with the grant of new options for the same number of shares
     but with a lower exercise price per share. The shares subject to such
     cancelled options were as follows: 80,000 shares for Mr. Wolf, 50,000
     shares for Mr. Ranhoff, 130,000 shares for all current executive officers
     as a group and 571,000 shares for all eligible employees.

DISCRETIONARY GRANT PROGRAM

     The discretionary grant program is administered by the Compensation
Committee of the Board of Directors. The Compensation Committee in its capacity
as the Plan Administrator has complete discretion to determine which eligible
individuals are to receive option grants under the program, the time or times
when such grants are to be made, the number of shares subject to each such
grant, the status of any granted option as either an incentive stock option or a
non-statutory option, the vesting schedule (if any) to be in effect for the
option grant and the maximum term for which any granted option is to remain
outstanding.

                                       10
<PAGE>


     The exercise price per share will not be less than 100% of the fair market
value per share of common stock on the grant date. No option will have a maximum
term in excess of ten (10) years measured from the grant date, and each option
will generally become exercisable in one or more installments over the
optionee's period of service with the Company. The shares acquired upon the
exercise of one or more options may, however, be unvested and subject to
repurchase by the Company, at the exercise price paid per share, if the optionee
ceases service with the Company prior to vesting in those shares. Options are
generally not assignable or transferable other than by will or the laws of
inheritance and, during the optionee's lifetime, the option may be exercised
only by such optionee. However, the Plan Administrator may allow non-statutory
options to be transferred or assigned during the optionee's lifetime to one or
more members of the optionee's immediate family, to a trust established
exclusively for one or more such family members or to the optionee's former
spouse, to the extent such transfer or assignment is in furtherance of the
optionee's estate plan or pursuant to divorce or other marital separation
proceedings. No option holder will have any stockholder rights with respect to
the option shares until the option is exercised and the exercise price is paid
for the purchased shares.

     For purposes of establishing the option exercise price and for all other
valuation purposes under the 1993 Plan, the fair market value per share of
Common Stock on any relevant date will be the closing price per share on that
date, as quoted on the Nasdaq National Market. On December 31, 1999, the closing
price per share on the Nasdaq National Market was $86.50.

     The exercise price may be paid in cash or in shares of Common Stock valued
at fair market value on the exercise date. The option may also be exercised
through a cashless exercise procedure pursuant to which the optionee provides
irrevocable instructions to a designated brokerage firm to effect the immediate
sale of the purchased shares and remit to the Company, out of the sale proceeds
available on the settlement date, an amount equal to the aggregate exercise
price payable for the purchased shares, plus all applicable withholding taxes.

     The Plan Administrator may assist any optionee (including an officer) in
the exercise of one or more outstanding options by (i) authorizing a loan from
the Company or (ii) permitting such individual to pay the exercise price in
installments over a period of years. The terms and conditions of any such loan
or installment payment will be established by the Plan Administrator, but in no
event will the maximum credit extended exceed the aggregate exercise price
payable for the purchased shares plus any federal or state tax liability
incurred in connection with the option exercise.

     The Plan Administrator may provide one or more holders of non-statutory
options with the right to have the Company withhold a portion of the shares
otherwise issuable upon the exercise of those options in order to satisfy the
federal and state income and employment tax withholding liability to which such
individuals may become subject in connection with the option exercise.
Alternatively, the Plan Administrator may allow such individuals to deliver
previously acquired shares of common stock in payment of such withholding tax
liability.

     Upon cessation of service, the optionee will have a limited period of time
in which to exercise his or her outstanding options for any shares in which the
optionee is vested at that time. The Plan Administrator will have complete
discretion to extend the period following the optionee's cessation of service
during which his or her outstanding options may be exercised and/or to
accelerate the exercisability or vesting of such options in whole or in part.
Such discretion may be exercised at any time while the options remain
outstanding, whether before or after the optionee's actual cessation of service.

     Except as otherwise described in this Proxy Statement, outstanding options
under the discretionary program will be subject to acceleration upon certain
changes in the ownership or control of the Company as follows:

     CORPORATE TRANSACTION. In the event of any one of the following
stockholder-approved transactions (a "Corporate Transaction"):

     (i)  a merger or consolidation in which the Company is not the surviving
          entity,

     (ii) the sale, transfer or other disposition of all or substantially all of
          the Company's assets in liquidation or dissolution of the Company, or

    (iii) any reverse merger in which the Company is the surviving entity but
          in which more than 50% of the Company's outstanding voting securities
          are transferred to persons other than those who held such securities
          immediately prior to the merger,


                                       11
<PAGE>


each option outstanding at the time will automatically become exercisable for
all of the shares at the time subject to that option and may be exercised for
any or all of those shares as fully vested shares. However, an outstanding
option will not so accelerate if and to the extent such option is to be assumed
by the successor corporation or replaced with a cash incentive program which
preserves the spread existing on the unvested option shares at the time of the
transaction. Any options assumed in connection with the Corporate Transaction
may, in the Plan Administrator's discretion, be subject to subsequent
acceleration in the event the optionee's service with the successor entity is
terminated within a specified period following the acquisition.

     CHANGE IN CONTROL. The Plan Administrator has full power and authority to
structure one or more options under the discretionary program so that each of
those options will, immediately prior to a Change in Control, become exercisable
for all of the shares at the time subject to that option and may be exercised
for any or all of those shares as fully vested shares. Alternatively, the Plan
Administrator may condition such accelerated vesting upon the optionee's
cessation of service under certain prescribed circumstances following the Change
in Control. A Change in Control will be deemed to occur under the 1993 Plan in
the event:

     (i)  a person or related group of persons (other than the Company or its
          affiliates) acquires ownership of more than fifty percent (50%) of the
          Company's outstanding voting stock pursuant to a tender or exchange
          offer made directly to the Company's stockholders; or

     (ii) a majority of the Board members ceases, by reason of one or more
          contested elections for Board membership over a period of thirty-six
          (36) months or less, to be comprised of individuals who either (A)
          have been members of the Board continuously since the beginning of
          such period or (B) have been elected or nominated for election as
          Board members during such period by at least a majority of the Board
          members described in clause (A) who were still in office at the time
          such election or nomination was approved by the Board.

     The executive officers of the Company have entered into special agreements
with the Company which provide them with additional option acceleration benefits
upon a Corporate Transaction or Change in Control. Those agreements are
summarized below in the section entitled "Executive Compensation--Employment
Contracts, Termination of Employment Arrangements and Change in Control
Agreements."

     The acceleration of options in the event of a Corporate Transaction or
Change in Control may be seen as an anti-takeover provision and may have the
effect of discouraging a merger proposal, a takeover attempt or other efforts to
gain control of the Company.

     The Plan Administrator is authorized to issue two types of stock
appreciation rights in connection with option grants made under the
discretionary program:

     (i)  TANDEM STOCK APPRECIATION RIGHTS provide the holders with the right to
          surrender their options for an appreciation distribution from the
          Company equal in amount to the excess of (a) the fair market value of
          the vested shares of Common Stock subject to the surrendered option
          over (b) the aggregate exercise price payable for those shares. Such
          appreciation distribution may, at the discretion of the Plan
          Administrator, be made in cash or in shares of Common Stock.

     (ii) LIMITED STOCK APPRECIATION RIGHTS may be provided to one or more
          officers of the Company as part of their option grants. Any option
          with such a limited stock appreciation right may be surrendered to the
          Company upon the successful completion of a hostile tender offer for
          more than fifty percent (50%) of the Company's outstanding voting
          securities. In return for the surrendered option, the officer will be
          entitled to a cash distribution from the Company in an amount per
          surrendered option share equal to the excess of (a) the highest price
          paid per share of Common Stock in such tender offer over (b) the
          exercise price payable for such share.

     The Plan Administrator has the authority to effect, on one or more separate
occasions, the cancellation of outstanding options under the discretionary
program which have exercise prices in excess of the then current market price of
the Common Stock and to issue replacement options with an exercise price based
on the market price of the common stock at the time of the new grant.

     On December 14, 1998, the Plan Administrator implemented an option
cancellation/regrant program for all employees of the Company, including certain
executive officers. Pursuant to that program, each such employee was


                                       12
<PAGE>



given the opportunity to surrender his or her outstanding options under the 1993
Plan with exercise prices in excess of $17.00 per share in return for a new
option grant for the same number of shares but with an exercise price of $17.19
per share, the closing price per share of Common Stock as reported on the Nasdaq
National Market on the December 14, 1998 grant date of the new option. Options
for approximately 568,212 shares with a weighted average exercise price of
$28.35 per share were surrendered for cancellation, and new options for the same
number of shares were granted with the $17.19 per share exercise price. Each new
option granted in replacement of a standard four-year service higher-priced
option became exercisable for 12.5% of the option shares upon the optionee's
continuation in service through June 14, 1999. The option will become
exercisable for the remaining option shares in a series of fourteen successive
equal quarterly installments upon the optionee's completion of each additional
three-month period of service thereafter. For each performance vesting option
cancelled and regranted in connection with the December 14, 1998 program, the
new option will become exercisable for the option shares upon the optionee's
completion of six years of service (or seven years of service for certain of
those grants) measured from the December 14, 1998 grant date, subject to earlier
vesting in the event certain pre-defined performance objectives are attained
during the optionee's period of service with the Company. As previously
indicated, the following executive officers participated in the December 14,
1998 cancellation/regrant program: Mr. Wolf with respect to cancelled options
covering 80,000 shares with a weighted average exercise price of $26.44; and Mr.
Ranhoff with respect to cancelled options covering 50,000 shares with a weighted
average exercise price of $29.50 per share.



AUTOMATIC GRANT PROGRAM

     The terms and conditions governing the option grants which may be made
under the automatic program are summarized below. All such grants will be made
in strict compliance with the express provisions of the program, and the Plan
Administrator will exercise no discretionary functions with respect to those
grants. Stockholder approval of this Proposal will also constitute approval of
each automatic option granted under the program at and after the 2000 Annual
Meeting and the subsequent exercise of that option in accordance with the terms
of the program as described below.

     Under the program, each individual who first joins the Board as a
non-employee director will receive at that time an automatic option grant for
10,000 shares of Common Stock. In addition, at each Annual Stockholders Meeting,
beginning with the 2000 Annual Meeting, each individual who is to continue to
serve as a non-employee Board member will automatically be granted, whether or
not he or she is standing for re-election at that particular meeting, a stock
option to purchase an additional 10,000 shares, provided such individual has
served as a non-employee Board member for at least six (6) months. There will be
no limit on the number of such 10,000-share options which any one non-employee
Board member may receive over his or her period of Board service.

     Prior to the amendment to the automatic option grant program which forms
part of this Proposal, each non-employee Board member was to receive an option
grant for 5,000 shares of Common Stock at each Annual Stockholders Meeting at
which he or she was to continue to serve on the Board.

     Each option will be subject to the following terms and conditions:

          The exercise price per share will be equal to one hundred percent
     (100%) of the fair market value of the option shares on the automatic grant
     date.

          Each option is to have a maximum term of ten (10) years measured from
     the grant date, and no option may be exercised after the expiration date of
     the option term.

          The initial 10,000 share grant made to a new non-employee Board member
     will become exercisable for 12.5% of the option shares upon completion of
     six (6) months of Board service measured from the grant date and will
     become exercisable for the balance of the option shares in a series of
     fourteen (14) successive equal quarterly installments upon the individual's
     completion of each additional three (3) month period of Board service.

          Each 10,000-share annual grant made to a continuing Board member will
     become exercisable in a series of four (4) successive equal annual
     installments over the optionee's period of continued Board service, with
     the first such installment to become exercisable one (1) year after the
     automatic grant date.

                                       13
<PAGE>


          The option will not remain exercisable for more than a six (6)-month
     period following the optionee's cessation of Board service for any reason
     other than death or disability. Should the optionee die within six (6)
     months after cessation of Board service, then the option will remain
     exercisable for up to a twelve (12)-month period following the optionee's
     death and may be exercised by the personal representative of the optionee's
     estate or the person to whom the option is transferred by the optionee's
     will or the laws of inheritance. During the applicable six (6)-month or
     (12)-month period, the option may not be exercised in the aggregate for
     more than the number of option shares for which that option is exercisable
     at the time of the optionee's cessation of Board service.

          Should the optionee die or become permanently disabled while serving
     as a Board member, then the option will vest and become immediately
     exercisable for all of the option shares and may be exercised for any or
     all of those shares until the earlier of (a) the expiration of the twelve
     (12)-month period measured from the date of the optionee's cessation of
     Board service or (b) the expiration date of the option term.

          The option will vest and become immediately exercisable for all of the
     shares at the time subject to that option in the event of a Corporate
     Transaction or Change in Control (as those terms are defined above). Upon
     the successful completion of a hostile tender offer for more than fifty
     percent (50%) of the Company's voting securities, the optionee will have a
     thirty (30)-day period in which he or she may elect to surrender each
     outstanding automatic option grant to the Company in return for a cash
     distribution in an amount per surrendered option share equal to the excess
     of (a) the highest price paid per share of Common Stock paid in such tender
     offer over (b) the exercise price payable for such share. Stockholder
     approval of this Proposal will also constitute pre-approval of each such
     option surrender right granted at or after the 2000 Annual Meeting and the
     subsequent exercise of that right in accordance with the foregoing terms
     and conditions.

          The option may be transferred or assigned during the optionee's
     lifetime to one or more members of the optionee's immediate family, to a
     trust established exclusively for one or more such family members or to the
     optionee's former spouse, to the extent such transfer or assignment is in
     furtherance of the optionee's estate plan or pursuant to divorce or other
     marital separation proceedings.

     The remaining terms of the option will in general conform to the terms
described above for option grants made under the discretionary grant program.

GENERAL PLAN INFORMATION

     In the event any change is made to the Common Stock issuable under the 1993
Plan by reason of any recapitalization, stock dividend, stock split, combination
of shares, exchange of shares or other change in corporate structure effected
without the Company's receipt of consideration, appropriate adjustments will be
made to (i) the maximum number and/or class of securities issuable under the
1993 Plan, (ii) the maximum number and/or class of securities for which any one
participant may be granted stock options and separately exercisable stock
appreciation rights under the 1993 Plan after December 31, 1994, (iii) the
maximum number and class of securities by which the share reserve is to increase
at the start of each fiscal year pursuant to the automatic share increase
provisions of the 1993 Plan, (iv) the number and/or class of securities and
price per share in effect under each outstanding option and (v) the number
and/or class of securities per non-employee Board member for which option grants
will subsequently be made under the automatic grant program.

     The Board of Directors may amend or modify the 1993 Plan in any or all
respects whatsoever, subject to any stockholder approval required under
applicable law or regulation. The Board may terminate the 1993 Plan at any time,
and the 1993 Plan will in all events terminate on December 31, 2004 if this
Proposal is approved at the Annual Meeting; otherwise, the termination date of
the Plan will remain August 30, 2003. Each stock option outstanding at the time
of such termination will remain in force in accordance with the provisions of
the agreement evidencing that grant.

NEW PLAN BENEFITS

     No options have been granted to date under the 1993 Plan on the basis of
the amendments which are the subject of this Proposal. If the Proposal is
approved by the stockholders, then each of the following non-employee Board
members will receive an option grant at the 2000 Annual Stockholders Meeting for
10,000 shares with an


                                       14
<PAGE>

exercise price per share equal to the closing price per share of common stock on
that date: Jos. C. Henkens, Henk J. Evenhuis, Bernard V. Vonderschmitt and Jon
D. Tompkins.

     Dr. William G. Howard is not eligible to receive an option grant pursuant
to the automatic grant program, due to the fact that Dr. Howard served as
interim Chief Executive Officer of the Company until July 29, 1999 and as an
employee until October 9, 1999. However, the Compensation Committee of the Board
has indicated its intent to grant Dr. Howard a stock option on the date of the
2000 Annual Meeting to purchase 10,000 shares of Common Stock under the
discretionary grant program upon the same terms as the grants to be made to the
continuing non-employee Board members at that Annual Meeting under the automatic
grant program, provided this Proposal is approved by stockholders.

ACCOUNTING TREATMENT

     Under the current accounting principles in effect for equity incentive
programs such as the 1993 Plan, the option grants under the 1993 Plan will not
result in any direct charge to the Company's reported earnings. However, the
fair value of those options is required to be disclosed in the notes to the
Company's consolidated financial statements, and the Company must also disclose,
in footnotes to the Company's consolidated financial statements, the pro forma
impact those options would have upon the Company's reported earnings were the
fair value of those options at the time of grant treated as a compensation
expense. In addition, the number of outstanding options may be a factor in
determining the Company's earnings per share on a fully-diluted basis.

     On March 31, 1999, the Financial Accounting Standards Board issued an
Exposure Draft of a proposed interpretation of APB Opinion 25, "Accounting for
Stock Issued to Employees." Under the proposed interpretation, option grants
made to non-employee consultants (but not non-employee Board members) after
December 15, 1998, will result in a direct charge to the Company's reported
earnings based upon the fair value of the option measured initially as of the
grant date and then subsequently on the vesting date of each installment of the
underlying option shares. Such charge will accordingly include the appreciation
in the value of the option shares over the period between the grant date of the
option (or, if later, the effective date of the final amendment) and the vesting
date of each installment of the option shares. In addition, if the proposed
interpretation is adopted, any options which are repriced after December 15,
1998 will also trigger a direct charge to the Company's earnings measured by the
appreciation in the value of the underlying shares over the period between the
grant date of the option (or, if later, the effective date of the final
amendment) and the date the option is exercised for those shares.

     Should one or more optionees be granted stock appreciation rights under the
1993 Plan that have no conditions upon exercisability other than a service or
employment requirement, then such rights would result in a compensation expense
to be charged against the Company's reported earnings. Accordingly, at the end
of each fiscal quarter, the amount (if any) by which the fair market value of
the shares of common stock subject to such outstanding stock appreciation rights
has increased from the prior quarter-end would be accrued as compensation
expense, to the extent such fair market value is in excess of the aggregate
exercise price in effect for those rights.

FEDERAL TAX CONSEQUENCES

     Options granted under the 1993 Plan may be either incentive stock options
that satisfy the requirements of Section 422 of the Internal Revenue Code or
non-statutory options that are not intended to meet such requirements. The
Federal income tax treatment for the two types of options differs as described
below:

     INCENTIVE OPTIONS. No taxable income is recognized by the optionee at the
time of the option grant, and no taxable income is generally recognized at the
time the option is exercised. The optionee will, however, recognize taxable
income in the year in which the purchased shares are sold or otherwise made the
subject of disposition.

     For Federal income tax purposes, dispositions are divided into two
categories: (i) qualifying and (ii) disqualifying. The optionee will make a
qualifying disposition of the purchased shares if the sale or other disposition
of such shares is made more than two (2) years after the date the option for
those shares was granted and more than one (1) year after the date the option
was exercised for the shares. If the sale or disposition occurs before those two
holding periods are satisfied, then a disqualifying disposition will result.

     Upon a qualifying disposition, the optionee will recognize long-term
capital gain in an amount equal to the excess of (i) the amount realized upon
the sale or other disposition of the purchased shares over (ii) the exercise
price paid for the shares. If there is a disqualifying disposition of the
shares, then the excess of (i) the fair market


                                       15
<PAGE>

value of those shares on the exercise date over (ii) the exercise price paid for
the shares will be taxable as ordinary income to the optionee. Any additional
gain or loss recognized upon the disposition will be recognized as a capital
gain or loss by the optionee.

     If the optionee makes a disqualifying disposition of the purchased shares,
then the Company will be entitled to an income tax deduction, for the taxable
year in which such disposition occurs, equal to the excess of (i) the fair
market value of such shares on the date the option was exercised over (ii) the
exercise price paid for the shares. In no other instance will the Company be
allowed a deduction with respect to the optionee's disposition of the purchased
shares.

     NON-STATUTORY OPTIONS. No taxable income is recognized by an optionee upon
the grant of a non-statutory option. The optionee will in general recognize
ordinary income, in the year in which the option is exercised, equal to the
excess of the fair market value of the purchased shares on the exercise date
over the exercise price paid for the shares, and the optionee will be required
to satisfy the tax withholding requirements applicable to such income.

     If the shares acquired upon exercise of the non-statutory option are
subject to repurchase by the Company at the original exercise price upon the
optionee's termination of service prior to vesting in such shares, then the
optionee will not recognize any taxable income at the time of exercise but will
have to report as ordinary income, as and when the Company's repurchase right
lapses, an amount equal to the excess of (i) the fair market value of the shares
on the date the Company's repurchase right lapses with respect to those shares
over (ii) the exercise price paid for the shares.

     Alternatively, the optionee may elect under Section 83(b) of the Internal
Revenue Code to include as ordinary income in the year of exercise of the
non-statutory option an amount equal to the excess of (i) the fair market value
of the purchased shares on the exercise date (determined as if the shares were
not subject to the Company's repurchase right) over (ii) the exercise price paid
for such shares. If the Section 83(b) election is made, the optionee will not
recognize any additional income as and when the Company's repurchase right
lapses.

     The Company will be entitled to an income tax deduction equal to the amount
of ordinary income recognized by the optionee with respect to the exercised
non-statutory option. The deduction will in general be allowed for the taxable
year of the Company in which such ordinary income is recognized by the optionee.

     STOCK APPRECIATION RIGHTS. An optionee who is granted a stock appreciation
right will recognize ordinary income in the year of exercise equal to the amount
of the appreciation distribution. The Company will be entitled to an income tax
deduction equal to the appreciation distribution for the taxable year of the
Company in which the ordinary income is recognized by the optionee.

     DEDUCTIBILITY OF EXECUTIVE COMPENSATION. The Company anticipates that any
compensation deemed paid by it in connection with the disqualifying disposition
of incentive stock option shares or the exercise of non-statutory options will
qualify as performance-based compensation for purposes of Code Section 162(m)
and will not have to be taken into account for purposes of the $1 million
limitation per covered individual on the deductibility of the compensation paid
to certain executive officers of the Company. Accordingly, all compensation
deemed paid with respect to those options will remain deductible by the Company
without limitation under Code Section 162(m).

STOCKHOLDER APPROVAL


     The affirmative vote of a majority of the outstanding voting shares of the
Company present or represented and entitled to vote at the Annual Meeting is
required for approval of the amendment to the 1993 Plan. Should such stockholder
approval not be obtained, then neither the 500,000-share increase to the share
reserve nor the revisions to the automatic share increase provisions of the 1993
Plan will be implemented, and the number of shares subject to the annual option
grants to be made to continuing non-employee Board members will not be
increased. However, in the absence of such stockholder approval, the 1993 Plan
will continue to remain in effect in accordance with its provisions prior to the
amendments which are the subject of this Proposal; option grants will continue
to be made until the available reserve of Common Stock under the 1993 Plan with
its pre-existing automatic share increase provisions is issued or until the
currently scheduled August 30, 2003 termination date; and each of the
non-employee Board members will continue to receive an annual option grant for
5,000 shares at each Annual Stockholders Meeting at which he is to remain on the
Board.


RECOMMENDATIONS OF THE BOARD OF DIRECTORS

     The Board of Directors recommends that the stockholders vote FOR these
amendments to the 1993 Plan.

                                       16
<PAGE>


    PROPOSAL FOUR--APPROVAL OF AMENDMENT TO 1994 EMPLOYEE STOCK PURCHASE PLAN

     The Company's stockholders are being asked to approve a series of
amendments to the Company's 1994 Employee Stock Purchase Plan (the "Purchase
Plan") which will effect the following changes: (i) implement an automatic share
increase feature whereby the share reserve under the Purchase Plan will increase
automatically on the first trading day of each fiscal year over the remaining
term of the Purchase Plan, commencing with the fiscal year beginning November 1,
2000, by an amount equal to 0.5% of the total number of shares of Common Stock
outstanding on the last day of the immediately preceding fiscal year, but in no
event will any such annual increase exceed 250,000 shares, subject to adjustment
for stock splits, stock dividends and similar transactions, (ii) revise the
offering periods under the Purchase Plan, effective with the offering period
commencing August 15, 2000, so that each such period may have a maximum duration
of 12 months, with purchases occurring at semi-annual intervals on the 14th day
of February and August each year within that offering period, and (iii) extend
the termination date of the Purchase Plan to August 14, 2010. The amendments
were adopted by the Board of Directors on December 8, 1999, subject to
stockholder approval at the Annual Meeting.

     The Board of Directors believes that it is in the best interests of the
Company's stockholders to assure that there is a sufficient number of shares of
Common Stock reserved for issuance under the Purchase Plan so that eligible
employees of the Company and its participating affiliates will continue to have
the opportunity to acquire an equity interest in the Company and thereby further
align their interests with those of the stockholders.

     The terms and provisions of the Purchase Plan as most recently amended are
summarized below. This summary, however, does not purport to be a complete
description of the Purchase Plan. Copies of the actual plan document may be
obtained by any stockholder upon written request to the Corporate Secretary at
the Company's principal offices in Fremont, California.

     PURPOSE. The purpose of the Purchase Plan is to provide eligible employees
of the Company and its participating affiliates with the opportunity to acquire
an ownership interest in the Company through participation in a
payroll-deduction based employee stock purchase plan under Section 423 of the
Internal Revenue Code. Participating affiliates may include any parent or
subsidiary corporations of the Company, whether now existing or subsequently
established, which elect to extend the benefits of the Purchase Plan to their
eligible employees.

     ADMINISTRATION. The Purchase Plan is administered by the Compensation
Committee of the Board. Such committee, as Plan Administrator, has full
authority to adopt administrative rules and procedures and to interpret the
provisions of the Purchase Plan. All costs and expenses incurred in plan
administration are paid by the Company without charge to participants.

     SHARE RESERVE. The maximum number of shares of Common Stock authorized for
issuance over the term of the Purchase Plan is currently limited to 800,000
shares. As of December 31, 1999, 546,958 shares had been issued, and 253,042
shares remained available for subsequent purchase.

     If this Proposal is approved, then the number of shares of Common Stock
reserved for issuance under the Purchase Plan will automatically increase on the
first trading day of each fiscal year, commencing with the fiscal year beginning
November 1, 2000, by an amount equal to 0.5% of the total number of shares of
Common Stock outstanding on the last trading day of the immediately preceding
fiscal year. However, no such annual increase will exceed 250,000 shares of
Common Stock, subject to adjustment for stock dividends, stock splits and
similar transactions.

     The shares of Common Stock issuable under the Purchase Plan may be either
shares newly issued by the Company or shares reacquired by the Company,
including shares purchased on the open market.

     In the event that any change is made to the Company's outstanding common
stock (whether by reason of any recapitalization, stock dividend, stock split,
exchange or combination of shares or other change in corporate structure
effected without the Company's receipt of consideration), appropriate
adjustments will be made to (i) the class and maximum number of securities
issuable over the term of the Purchase Plan, (ii) the class and


                                       17
<PAGE>


maximum number of securities by which the share reserve is to increase at the
start of each fiscal year pursuant to the automatic share increase provisions,
(iii) the class and maximum number of securities purchasable per participant
during any one purchase period and (iv) the class and number of securities and
the price per share in effect under each outstanding purchase right.

     ELIGIBILITY AND PARTICIPATION. Any individual who is regularly scheduled to
work for more than twenty (20) hours per week for more than five (5) months per
calendar year in the employ of the Company or any participating parent or
subsidiary corporation (including any corporation which subsequently becomes
such at any time during the term of the Purchase Plan) will be eligible to
participate in the Purchase Plan upon completion of thirty (30) days of
continuous employment. An eligible employee who has satisfied such service
requirement may enter an offering period under the Purchase Plan on the start
date of that period or on any semi-annual entry date (the 15th day of February
and August each year) during that offering period.

     As of December 31, 1999, the Company estimated that approximately 739
employees, including three executive officers, were eligible to participate in
the Purchase Plan.

     OFFERING PERIODS AND PURCHASE RIGHTS. If this Proposal is approved, then
shares of Common Stock will be offered under the Purchase Plan through a series
of successive offering periods, each with a maximum duration of 12 months. The
initial 12-month offering period will begin on August 15, 2000 and end on August
14, 2001. The next offering period will begin on August 15, 2001, and subsequent
offering periods will begin as designated by the Plan Administrator.

     Prior to the amendment to the Purchase Plan which forms part of this
Proposal, shares of Common Stock were offered under the Purchase Plan through a
series of successive offering periods, each with a maximum duration of 6 months.
Accordingly, offering periods ran from January 1 to June 30 and from July 1 to
December 31 each year. The last offering period on such basis will have an
extended duration and will run from January 1, 2000 to August 14, 2000.

     At the time the participant joins the offering period, he or she will be
granted a purchase right to acquire shares of Common Stock at semi-annual
intervals over the remainder of that offering period. The purchase dates will
occur on the 14th day of February and August of each year, and all payroll
deductions collected from the participant for the period ending with each such
semi-annual purchase date will automatically be applied to the purchase of
Common Stock.

     Approval of this Proposal will also constitute approval of a new reset
feature under the Purchase Plan. Pursuant to that feature, should the fair
market value per share of Common Stock on any semi-annual purchase date be less
than the fair market value per share on the start date of the 12-month offering
period, then that offering period will automatically terminate, and a new
12-month offering period will begin on the next business day, with all
participants in the terminated offering to be automatically transferred to the
new offering period.

     PURCHASE PRICE. The purchase price per share for each participant will be
equal to 85% of the LOWER of (i) the fair market value per share of Common Stock
on the participant's entry date into the offering period or (ii) the fair market
value per share of Common Stock on the semi-annual purchase date.

     The fair market value per share of Common Stock on any relevant date under
the Purchase Plan will be deemed to be equal to the mean between the high and
low selling prices of the Common Stock on such date (or the immediately
preceding business date, if such date is not a business day), as those prices
are reported on the Nasdaq National Market. On December 31, 1999, the fair
market value per share of Common Stock determined on such basis was $86.50.

     PAYROLL DEDUCTIONS AND STOCK PURCHASES. Each participant may authorize
periodic payroll deductions in any multiple of 1% (up to a maximum of 10%) of
his or her base salary each offering period to be applied to the purchase of
Common Stock on each semi-annual purchase date within that offering period.
Accordingly, on each semi-annual purchase date (the 14th day of February and
August of each year), the accumulated payroll deductions of each participant
will automatically applied to the purchase of shares of Common Stock at the
purchase price in effect for the participant on that purchase date.

                                       18
<PAGE>

     SPECIAL LIMITATIONS. The Purchase Plan imposes certain limitations upon a
participant's rights to acquire Common Stock, including the following
limitations:

     (i)  Purchase rights may not be granted to any individual who owns stock
          (including stock purchasable under any outstanding purchase rights)
          possessing 5% or more of the total combined voting power or value of
          all classes of stock of the Company of any of its affiliates.

     (ii) Purchase rights granted to a participant may not permit such
          individual to purchase more than $25,000 of Common Stock (valued at
          the time each purchase right is granted) for each calendar year that
          purchase right is outstanding at any time.

    (iii) No participant may purchase more than 750 shares on any one
          semi-annual purchase date. The Plan Administrator may increase or
          decrease this limitation as of the start of any new offering period.

     TERMINATION OF REPURCHASE RIGHTS. The purchase right will immediately
terminate upon (i) the Company's termination of the Purchase Plan, (ii) the
participant's election to withdraw from the Purchase Plan or (iii) the
participant's cessation of employment or loss of eligible employee status. Any
payroll deductions which the participant may have made with respect to the
terminated purchase right will be refunded and will not be applied to the
purchase of Common Stock.

     STOCKHOLDER RIGHTS. No participant has any stockholder rights with respect
to the shares covered by his or her purchase rights until the shares are
actually purchased on the participant's behalf. No adjustment will be made for
dividends, distributions or other rights for which the record date is prior to
the date of such purchase.

     ASSIGNABILITY. No purchase rights are assignable or transferable by the
participant, and the purchase rights are exercisable only by the participant.

     CHANGE IN CONTROL. In the event the Company is acquired by merger or asset
sale during a purchase period, all outstanding purchase rights will
automatically be exercised immediately prior to the effective date of such
acquisition. The purchase price will be the LOWER of (i) 85% of the fair market
value per share of Common Stock on the participant's entry date into the
offering period in which such acquisition occurs or (ii) 85% of the fair market
value per share of Common Stock immediately prior to such acquisition.

     AMENDMENT AND TERMINATION. If this Proposal is adopted, then the Purchase
Plan will terminate upon the earlier of (i) August 14, 2010 or (ii) the date on
which all shares available for issuance there under are sold pursuant to
exercised purchase rights. Currently, the Purchase Plan is scheduled to
terminate on December 31, 2003.

     The Board may at any time alter, suspend or discontinue the Purchase Plan.
However, the Board may not, without stockholder approval, (i) increase the
number of shares issuable under the Purchase Plan, except in connection with
certain changes in the Company's capital structure, (ii) alter the purchase
price formula so as to reduce the purchase price or (ii) modify the requirements
for eligibility to participate in the Purchase Plan.

     FEDERAL TAX CONSEQUENCES. The Purchase Plan is intended to be an "employee
stock purchase plan" within the meaning of Section 423 of the Internal Revenue
Code. Under a plan which so qualifies, no taxable income is recognized by a
participant, and no deductions will be allowable to the Company, upon either the
grant or the exercise of the purchase rights. Taxable income is not be
recognized until there is a sale or other disposition of the shares acquired
under the Purchase Plan or in the event the participant should die while still
owning the purchase shares.

     If the participant sells or otherwise disposes of the purchased shares
within two (2) years after his or her entry date into the offering period in
which such shares were acquired or within one (1) year after the semi-annual
purchase date on which those shares were actually acquired, then the participant
will recognize ordinary income in the year of sale or disposition equal to the
amount by which the fair market value of the shares on the purchase date
exceeded the purchase price paid for those shares, and the Company will be
entitled to an income tax deduction, for the taxable year in which such
disposition occurs, equal in amount to such excess.

     If the participant sells or disposes of the purchased shares more than two
(2) years after his or her entry date into the offering period in which the
shares were acquired and more than one (1) year after the semi-annual purchase
date of those shares, then the participant will recognize ordinary income in the
year of sale or disposition equal to the LOWER of (i) the amount by which the
fair market value of the shares on the sale or disposition date exceeded the


                                       19
<PAGE>

purchase price paid for those shares or (ii) fifteen percent (15%) of the fair
market value of the shares on the participant's entry date into that offering
period. Any additional gain upon the disposition will be taxed as a long-term
capital gain. The Company will not be entitled to an income tax deduction with
respect to such sale or disposition.

     If the participant still owns the purchased shares at the time of death,
his or her estate will recognize ordinary income in the year of death equal to
the LOWER of (i) the amount by which the fair market value of the shares on the
date of death exceeds the purchase price or (ii) fifteen percent (15%) of the
fair market value of the shares on his or her entry date into the offering
period in which those shares were acquired.

ACCOUNTING TREATMENT

     Under current accounting principles applicable to employee stock purchase
plans qualified under Section 423 of the Internal Revenue Code, the issuance of
Common Stock under the Purchase Plan will not result in a compensation expense
chargeable against the Company's reported earnings. However, the Company must
disclose, in pro forma statements to the Company's consolidated financial
statements, the impact the purchase rights granted under the Purchase Plan would
have upon the Company's reported earnings were the fair value of those purchase
rights treated as compensation expense.

STOCK ISSUANCES

     The table below shows, as to each of the Company's executive officers named
in the Summary Compensation Table of the Executive Compensation and Related
Information section of this Proxy Statement and the various indicated
individuals and groups, the number of shares of Common Stock purchased under the
Purchase Plan between January 1, 1998 and December 31, 1999, together with the
weighted average purchase price paid per share.


<TABLE>
<CAPTION>
                                                                                                        WEIGHTED
                                                                                      NUMBER OF          AVERAGE
                                                                                      PURCHASED         PURCHASE
                               NAME AND POSITION                                       SHARES             PRICE
- --------------------------------------------------------------------------------    --------------    --------------
<S>                                                                                     <C>                <C>
William G. Howard, Jr. (1).....................................................              --                --
  Chairman of the Board
Graham J. Siddall (2)..........................................................              --                --
  President and Chief Executive Officer
Dennis Wolf (3) (4)............................................................           1,310            $15.26
  Executive Vice President, Chief Financial Officer and Secretary
David A. Ranhoff (4) (5).......................................................           1,597            $15.81
  Executive Vice President and Chief Operating Officer
Wilmer R. Bottoms (6)..........................................................             705            $16.63
All current executive officers as a group (three persons)......................           2,907            $15.56
All employees eligible under the Purchase Plan, including current officers
  who are not executive officers, as a group (736 persons).....................         222,472            $18.20
</TABLE>

- -----------------

(1)  Dr. Howard was appointed to the position of Chairman of the Board on
     December 8, 1998 and served as interim Chief Executive Officer from
     December 1998 until July 1999 and as an employee until October 9, 1999.

(2)  Dr. Siddall was appointed to the positions of President and Chief Executive
     Officer on July 29, 1999.

(3)  Mr. Wolf was promoted to Executive Vice President on December 8, 1998.

(4)  Mr. Ranhoff and Mr. Wolf were named to the Office of the President on
     December 8, 1998. The Office of the President was dissolved upon the
     appointment of Dr. Siddall to the position of President and Chief Executive
     Officer.

(5)  Mr. Ranhoff was appointed to the position of Chief Operating Officer
     effective November 1, 1999.

(6)  Dr. Bottoms resigned as Chairman, member of the Board and as Chief
     Executive Officer on December 8, 1998.


                                       20
<PAGE>


NEW PLAN BENEFITS

     As of December 31, 1999, no purchase rights had been granted, and no shares
of Common Stock had been issued, on the basis of the amendments which are the
subject of this Proposal.

STOCKHOLDER APPROVAL

     The affirmative vote of a majority of the outstanding voting shares of the
Company present or represented and entitled to vote at the Annual Meeting is
required for approval of this Proposal. Should such stockholder approval not be
obtained, then the automatic share increase feature will not be implemented, the
maximum duration of each offering period will continue to be limited to 6
months, and the termination date of the Purchase Plan will not be extended
beyond December 31, 2003.

     The Board of Directors recommends that the stockholders vote FOR the
amendments to the Purchase Plan.

                                       21
<PAGE>


               PROPOSAL FIVE--RATIFICATION OF INDEPENDENT AUDITORS

     The Board of Directors has appointed the firm of Ernst & Young LLP,
independent auditors for the Company during fiscal year 1999, to serve in the
same capacity for the fiscal year ending October 31, 2000, and is asking the
stockholders to ratify this appointment. The affirmative vote of a majority of
the shares represented and voting at the Annual Meeting is required to ratify
the selection of Ernst & Young LLP.

     In the event the stockholders fail to ratify the appointment, the Board of
Directors will reconsider its selection. Even if the selection is ratified, the
Board of Directors in its discretion may direct the appointment of a different
independent auditing firm at any time during the year if the Board of Directors
believes that such a change would be in the best interests of the Company and
its stockholders.

     A representative of Ernst & Young LLP is expected to be present at the
Annual Meeting and, will have the opportunity to make a statement if he or she
desires to do so, and will be available to respond to appropriate questions.

RECOMMENDATION OF THE BOARD OF DIRECTORS

     The Board of Directors recommends that the stockholders vote FOR the
ratification of the selection of Ernst & Young LLP to serve as the Company's
independent auditors for the fiscal year ending October 31, 2000.

                                  OTHER MATTERS

     The Company knows of no other matters that will be presented for
consideration at the Annual Meeting. If any other matters properly come before
the Annual Meeting, it is the intention of the persons named in the enclosed
form of Proxy to vote the shares they represent as the Board of Directors may
recommend. Discretionary authority with respect to such other matters is granted
by the execution of the enclosed Proxy.

                                       22
<PAGE>


                             OWNERSHIP OF SECURITIES

     The following table sets forth certain information known to the Company
with respect to the beneficial ownership of the Company's common stock as of
December 31, 1999, unless otherwise noted, by (i) all persons who are beneficial
owners of five percent (5%) or more of the Company's common stock, (ii) each
director, (iii) the Company's former Chief Executive Officer, (iv) the Company's
current Chief Executive Officer and the two other most highly paid current
executive officers named in the Summary Compensation Table below and (v) all
current directors and executive officers as a group. Unless otherwise indicated,
each of the stockholders has sole voting and investment power with respect to
the shares beneficially owned, subject to community property laws, where
applicable. Information for J. & W. Seligman & Co., Inc., Capital Guardian Trust
Company and Wellington Management Company, LLP is based upon the most recent 13G
filed by such entity with the Securities and Exchange Commission.

<TABLE>
<CAPTION>
                                                                                                PERCENTAGE
                                                                                  SHARES         OF SHARES
                                                                               BENEFICIALLY     BENEFICIALLY
                   NAME AND ADDRESS OF BENEFICIAL OWNER                           OWNED          OWNED (1)
- ---------------------------------------------------------------------------- ----------------- ------------
<S>                                                                               <C>                 <C>
 J. & W. Seligman & Co., Inc...............................................       2,418,142           11.0%
   100 Park Avenue
   New York, NY 10006
 Capital Guardian Trust Company............................................       1,851,100            8.4%
   333 S. Hope Street, Floor 52
   Los Angeles, CA  90071

 Wellington Management Company, LLP........................................       1,138,700            5.2%
   75 State Street
   Boston, MA 02109

 Graham J. Siddall (2).....................................................          70,913              *

 William G. Howard, Jr. (3)................................................          15,250              *
 Jon D. Tompkins (4).......................................................           2,250              *
 Henk J. Evenhuis (5)......................................................             250              *
 Jos C. Henkens (6)........................................................          25,251              *
 Bernard V. Vonderschmitt (7)..............................................          23,251              *
 Dennis P. Wolf (8)........................................................           3,810              *
 David A. Ranhoff (9)......................................................          15,426              *
 Wilmer R. Bottoms (10)....................................................         163,160              *

All current directors and executive officers
   as a group (8 persons) (11).............................................         156,401              *
</TABLE>
- ---------------
* Less than one percent of the outstanding Common Stock.

(1)  Percentage of ownership is based on 22,516,842 shares of Common Stock
     outstanding on December 31, 1999.

(2)  Represents 70,913 shares under stock options currently exercisable or
     exercisable within sixty (60) days.

(3)  Represents 15,250 shares under stock options currently exercisable or
     exercisable within sixty (60) days.

(4)  Represents 1,000 shares held by the Tompkins Family Trust DTD 3/16/90 and
     1,250 shares under stock options currently exercisable or exercisable
     within sixty (60) days.

(5)  Represents 250 shares under stock options currently exercisable or
     exercisable within sixty (60) days.

(6)  Includes 250 shares under stock options currently exercisable or
     exercisable within sixty (60) days.

(7)  Includes 5,125 shares under stock options currently exercisable or
     exercisable within sixty (60) days.

(8)  Includes 2,500 shares under stock options currently exercisable or
     exercisable within sixty (60) days.

(9)  Includes 8,758 shares under stock options currently exercisable or
     exercisable within sixty (60) days.

(10) No longer an employee of the Company.

(11) Includes 104,046 shares under stock options currently exercisable or
     exercisable within sixty (60) days.


                                       23
<PAGE>


                 EXECUTIVE COMPENSATION AND RELATED INFORMATION

     The following table provides certain summary information concerning the
compensation earned, by the Company's current Chief Executive Officer, the
Company's interim Chief Executive Officer and the Company's former Chief
Executive Officer during the 1999 fiscal year and each of the Company's other
most highly compensated executive officers whose salary and bonus for the 1999
fiscal year was in excess of $100,000, for services rendered in all capacities
to the Company and its subsidiaries for the last three fiscal years. No other
executive officers who would have otherwise been includable in such table on the
basis of salary and bonus earned for the 1999 fiscal year have resigned or
terminated employment during that fiscal year.


SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>

                                                                                         LONG-TERM
                                                                                        COMPENSATION
                                                    ANNUAL COMPENSATION                    AWARDS
                                         -------------------------------------------   ---------------
                                                                      OTHER ANNUAL       SECURITIES          ALL OTHER
                                                                      COMPENSATION       UNDERLYING        COMPENSATION
 NAME AND PRINCIPAL POSITION     YEAR    SALARY ($)     BONUS ($)         ($)            OPTIONS (#)             ($)
- ------------------------------  -------  ------------   ----------   ---------------   ---------------     --------------
<S>                               <C>         <C>         <C>                  <C>             <C>                 <C>
Graham J. Siddall............     1999         41,538     187,500                 --           500,000                987(2)
  President and Chief             1998             --          --                 --                --                 --
  Executive Officer (1)           1997             --          --                 --                --                 --
William G. Howard, Jr........     1999         96,000          --              9,000(4)         15,100                 --
  Chairman of the Board           1998             --          --                 --                --                 --
  and Interim Chief Executive     1997             --          --                 --                --                 --
  Officer (3)
Dennis P. Wolf...............     1999        200,000     140,540                 --           210,100(6)          13,738(2)
  Executive Vice President,       1998        111,539      63,125                 --            80,000(7)           5,297
  Chief Financial Officer         1997             --          --                 --                --                 --
  and Secretary (5)
David A. Ranhoff.............     1999        200,000     187,387                 --           190,100(6)          12,212(2)
  Executive Vice President        1998        200,000      60,000                 --            50,000             10,396
  and Chief Operating             1997        183,462      40,000                 --                --             11,721
  Officer (5)
Wilmer R. Bottoms (8)........     1999        369,774(9)       --                 --                --              1,461(2)
                                  1998        367,000          --                 --           250,000(10)         15,443
                                  1997        300,000     175,000                 --                --             18,193
</TABLE>

- ---------------
(1)  Dr. Siddall joined the Company as a Director, Chief Executive Officer and
     President on July 29, 1999.

(2)  Represents auto, financial planning, health club and insurance allowances
     or expenses. Includes the payment of life insurance premiums on behalf of
     Messrs. Wolf and Ranhoff in the amount of $4,240 and $2,714, respectively.


(3)  Dr. Howard received a salary from the Company while serving as Chairman of
     the Board and interim Chief Executive Officer from December 8, 1998 to
     October 9, 1999.

(4)  Represents Board of Director fees earned while not an employee of the
     Company.

(5)  Mr. Ranhoff and Mr. Wolf were named to the Office of President on December
     8, 1998. On July 29, 1999, the Office of the President was dissolved upon
     the appointment of Dr. Siddall to the position of President and Chief
     Executive Officer.

(6)  Number of option shares includes the shares subject to options granted
     during the indicated period and subsequently cancelled on December 14, 1998
     in connection with the grant of new options for the same number of shares
     but with a lower exercise price per share. The shares subject to such
     cancelled options were as follows: 80,000 shares for Mr. Wolf, 50,000
     shares for Mr. Ranhoff, 130,000 shares for all current executive officers
     as a group and 571,000 shares for all eligible employees.

(7)  Does not include grant on November 1, 1999 to purchase 30,000 shares.

(8)  Dr. Bottoms resigned as Director, Chairman of the Board and President and
     Chief Executive Officer and President effective December 8, 1998.


                                       24
<PAGE>



(9)  Represents the salary paid to Dr. Bottoms during the fiscal year as well as
     $12,500 paid on January 16, 1998 as a retroactive pay increase for the
     period June 18, 1997 through October 31, 1997. Effective June 18, 1997, Dr.
     Bottoms' base salary was increased to $357,500 per annum. Does not reflect
     $33,125 in income withheld from Dr. Bottoms at his request. Such salary was
     not paid.



(10) This option was previously reported as being granted in fiscal year 1997.


OPTION GRANTS IN LAST FISCAL YEAR

     The following table sets forth information concerning the stock options
granted during the 1999 fiscal year to the executive officers named in the
Summary Compensation Table for the fiscal year. No stock appreciation rights
were granted to those individuals during such fiscal year.


<TABLE>
<CAPTION>
                                             INDIVIDUAL GRANTS
                             ---------------------------------------------------
                             NUMBER
                             OF            % OF TOTAL                               POTENTIAL REALIZABLE VALUE
                             SECURITIES      OPTIONS     EXERCISE                     AT ASSUMED ANNUAL RATES
                             UNDERLYING    GRANTED TO    OR BASE                    OF STOCK PRICE APPRECIATION
                             OPTIONS        EMPLOYEES    PRICE                           FOR OPTION TERM
                             GRANTED        IN FISCAL    ($/SHARE)    EXPIRATION  ---------------------------------
            NAME              (#) (1)       YEAR (2)        (3)         DATE            5% (4)           10% (4)
  -------------------------- -----------   ------------  -----------  ----------  ---------------- ----------------
<S>                             <C>                <C>    <C>       <C>            <C>              <C>
William G. Howard, Jr......      15,000            *      19.81      12/8/08       $  186,899.62    $   473,640.34
                                    100                   41.31      7/16/09            2,597.96          6,583.75
Graham J. Siddall..........     500,000(6)         16%    37.50      7/29/09        1,791,774.25     29,882,671.13

David A. Ranhoff...........      70,000             6%    14.63      11/5/08          644,050.99      1,632,151.65
                                 50,000(5)                17.19     12/14/08          540,534.99      1,369,821.64
                                 40,000                   19.81     12/08/08          498,336.10      1,262,881.53
                                    100                   41.31      7/16/09            2,597.96          6,583.75
                                 30,000                   43.56     10/27/09          821,839.50      2,082,702.65

Dennis P. Wolf.............      40,000             7%    14.63      11/5/08          368,029.14        932,658.09
                                 80,000(5)                17.19     12/14/08          864,855.89      2,191,614.63
                                 40,000                   19.81     12/08/08          498,336.10      1,262,881.53
                                    100                   41.31      7/16/09            2,597.96          6,583.75
                                 50,000                   43.56     10/27/09        1,369,732.50      3,471,171.08

Wilmer R. Bottoms..........          --            --        --           --                  --                --
</TABLE>

 -------------------

*    Less than one percent of the outstanding options.

(1)  Options granted will generally become exercisable for one eighth (1/8) of
     the option shares upon completion of six months of service measured from
     the grant date and will become exercisable for the balance of the option
     shares in a series of fourteen (14) successive equal quarterly installments
     upon completion of each additional full quarter of service thereafter.

(2)  Represents the individual's percentage (%) of the total options granted to
     all employees in the 1999 Fiscal year as determined by adding all the
     options granted in the 1999 Fiscal Year to the particular individual.

(3)  The exercise price may be paid in cash, in shares of the Company's common
     stock valued at the fair market value on the exercise date or through a
     cashless exercise procedure involving the same-day sale of the purchased
     shares. The Company may also finance the option exercise by loaning the
     optionee sufficient funds to pay the exercise price for the purchased
     shares and the federal and state income tax liability incurred by the
     optionee in connection with such exercise.

(4)  There is no assurance provided to any executive officer or any other holder
     of the Company's securities that the actual stock price appreciation over
     the 10-year option term will be at the five percent (5%) or ten percent
     (10%) assumed annual rates of compounded stock price appreciation or at any
     other defined level. Unless the market price of the Common Stock
     appreciates over the option term, no value will be realized from the option
     grants made to the executive officers.

(5)  The option for these shares was cancelled and regranted on December 14,
     1998 at a lower weighted average exercise price of $17.19 per share.


                                       25
<PAGE>


(6)  Dr. Siddall received one option grant for 500,000 shares that is
     exercisable for one-forty eighth (1/48) of the option shares upon
     completion of each month of service measured from the grant date
     (7/29/1999).

AGGREGATED OPTION EXERCISES AND FISCAL YEAR-END VALUES

     The table below sets forth certain information with respect to the
Company's current Chief Executive Officer, the former Chief Executive Officer,
the interim Chief Executive Officer and the other executive officers named in
the Summary Compensation Table concerning the exercise of options during the
1999 fiscal year and unexercised options held by those individuals as of the end
of such fiscal year. No stock appreciation rights were exercised by such
individuals during the 1999 fiscal year, nor were any stock appreciation rights
outstanding at the end of such fiscal year.

<TABLE>
<CAPTION>

                                                                  NUMBER OF SECURITIES        VALUE OF UNEXERCISED
                                     SHARES      AGGREGATE       UNDERLYING UNEXERCISED      IN-THE-MONEY OPTIONS AT
                                    ACQUIRED       VALUE           OPTIONS AT FY-END (#)           FY-END($)(1)
                                      ON         REALIZED       --------------------------  ----------------------------
              NAME                 EXERCISE(#)      ($) (2)     EXERCISABLE  UNEXERCISABLE  EXERCISABLE  UNEXERCISABLE
- -------------------------------    ---------    ------------    ------------ -------------  -----------  ---------------
<S>                                   <C>           <C>             <C>           <C>          <C>          <C>
William G. Howard...............           --              --       15,250         20,520      428,609        507,391
Graham J. Siddall...............           --              --       31,250        468,750      253,906      3,808,594
Dennis P. Wolf..................       22,501         610,756           --        187,599           --      3,991,965
David A. Ranhoff................       89,422       2,371,921        3,125        187,668       88,867      4,621,065
Wilmer R. Bottoms (3)...........      293,625       2,107,497           --             --           --             --
</TABLE>

- ----------------

(1)  Based on the market value of the option shares at fiscal year-end ($45.625
     per share) less the exercise price.

(2)  Based on the market value of the shares on the date of exercise less the
     exercise price paid for those shares.

(3)  Dr. Bottoms resigned on December 8, 1998.

EMPLOYMENT CONTRACTS, TERMINATION OF EMPLOYMENT ARRANGEMENTS AND CHANGE IN
CONTROL AGREEMENTS

     In connection with his resignation as Chief Executive Officer, Chairman and
a member of the Board, Dr. Bottoms and the Company entered into an agreement
pursuant to which Dr. Bottoms received salary continuation payments at the rate
of $29,792 per month for twelve (12) months from and after December 8, 1998 and
twelve (12) months of continued health coverage from and after December 8, 1998
for himself and his spouse at the Company's expense.



     The Company entered into an employment agreement on July 29, 1999 with Dr.
Siddall in connection with his appointment to the Board and the positions of
President and Chief Executive Officer. During the term of the Agreement, Dr.
Siddall will be paid a base salary of $33,333.33 per month and reimbursed for
all expenses. Dr. Siddall's target bonus for fiscal 2000 is up to $250,000. A
prorated portion of his bonus will be guaranteed for nine months and paid
quarterly. The balance of his bonus will be paid quarterly based upon the
achievement of performance milestones agreed to by the Board. Dr. Siddall also
has the opportunity to participate in a special bonus of up to $100,000 based on
performance objectives. Dr. Siddall was also granted an option to purchase
500,000 shares of the Company's Common Stock at an exercise price of $37.50, the
closing price per share on July 29, 1999. The option will vest over a four (4)
year period, with 1/48th vesting at the end of each month of employment with the
Company. In addition, Dr. Siddall received a sign-on bonus of $125,000 from the
Company on September 9, 1999. The employment agreement also provides severance
benefits in the event his employment with the Company is terminated without
cause (as defined), or he otherwise resigns for good reason (as defined). Prior
to June 30, 2000, if Dr. Siddall were to be involuntarily terminated or
otherwise resigns for good reason, the Company will pay Dr. Siddall his then
effective base salary until June 30, 2001 and will immediately accelerate all of
Dr. Siddall's stock options as if he were a full-time employee as of June 30,
2001. However, if Dr. Siddall is involuntarily terminated or resigns for good
reason after June 30, 2000, the Company will pay Dr. Siddall his then effective
base salary and target bonus for a period of twelve (12) months after the date
of such termination, and the Company will accelerate immediately the vesting of
all unvested stock options for an additional twelve (12) months after such date
of termination or resignation. In addition, in the event of a termination
without cause or for he resigns for good reason, Dr. Siddall, if he so chooses,
would be entitled to have the Company pay his COBRA premiums during the period
of severance. In the event of a change of control (as defined), and at any time
after such change of control is made, the Company or its successor terminates
Dr. Siddall without cause, Dr. Siddall resigns for good reason or


                                       26
<PAGE>


Dr. Siddall dies, the Company or such successor shall pay Dr. Siddall or his
estate an amount equal to 200% of his then effective annual base salary and 200%
of his target bonus and the Company or its successor shall immediately vest all
of Dr. Siddall's then unvested stock options. In the event Dr. Siddall is
entitled to termination benefits within one year following a change of control,
if any of the payments or benefits to which he is entitled will be subject to an
excise tax under the Internal Revenue Code, the Company will gross-up the amount
of such payments and benefits so that on an after-tax basis he will receive the
same amount of payments and benefits as he would have received absent the
imposition of such excise tax.

     The Company entered into an employment agreement with Dr. Howard in
connection with his position as Interim Chief Executive Officer and Chairman of
the Board of Directors from non-employee director status. The agreement was
effective as of December 8, 1999 and remained in effect until October 9, 1999.
During the term of the agreement, Dr. Howard was paid a base salary of $10,000
per month and reimbursed for all expenses. Dr. Howard was also granted an option
to purchase 15,000 shares of the Company's common stock at an exercise price of
$19.81 per share, the closing price per share on the December 8, 1998 grant
date. Pursuant to the terms of the employment agreement, the option became
exercisable for all the option shares upon the Company's retention of Dr.
Siddall as the new permanent Chief Executive Officer. Dr. Howard exercised all
15,000 option shares. During Dr. Howard's period of employment under the
agreement, he was not eligible to receive any compensation payable to the
non-employee members of the Board, whether in the form of annual retainer fees
or automatic option grants under the Company's 1993 Stock Option Plan. On
December 8, 1998, Dr. Howard resigned as both a member and as Chairman of the
Compensation Committee. Since October 9, 1999, Dr. Howard has served as a
non-employee member of the Board of Directors.


     The Company entered into an employment agreement with David A. Ranhoff on
March 31, 1999, which was subsequently amended. The employment agreement
provides Mr. Ranhoff with certain severance benefits in the event his employment
with the Company is involuntarily terminated without cause, or he otherwise
resigns in connection with a material reduction in his duties with the Company
or in his level of compensation. Mr. Ranhoff will be entitled under any of the
foregoing circumstances prior to a change in control to (i) twelve (12) months
of salary continuation payments; and (ii) continued of both health care coverage
and life insurance coverage until the earlier of the termination of the twelve
(12) month salary continuation period or the first date on which he is covered
under another employee health or life insurance plan. In the event, however,
that Mr. Ranhoff's employment with the Company or its successor is involuntarily
terminated within twelve (12) months after either a change in management or a
change in control, or he otherwise resigns in connection with a material
reduction in his duties with the Company or in his level of compensation
following either a change in management or a change in control, or he is not
offered a comparable position after a change in control, he shall be entitled to
(i) twelve (12) months of salary continuation payments, health care coverage and
life insurance and (ii) accelerated vesting of all of his outstanding stock
options, in the case of a change in control or twelve months of additional
vesting, in the case of a change in management. All of Mr. Ranhoff's options
will vest in full in the event these options are not assumed or otherwise
replaced with a comparable cash incentive program in connection with a change in
control of the Company.



     The Company also entered into an agreement with Dennis P. Wolf in March
1998 and January 1999 which was subsequently amended, which provides Mr. Wolf
with certain severance benefits in the event of (i) the involuntary termination
of his employment without cause within twelve (12) months after a change in
control of the Company or (ii) his resignation within twelve (12) months after
such change in control in connection with a material reduction in his duties or
a material reduction in his level of compensation or in the event that he is not
offered a comparable position after such change in control. Those severance
benefits will consist of (a) twelve (12) months of salary continuation payments
and (b) full and immediate vesting of all his outstanding stock options. In
addition, all of Mr. Wolf's options will vest in full in the event those options
are not assumed or otherwise replaced with a comparable cash incentive program
in connection with a change in control of the Company. If Mr. Wolf is
involuntarily terminated without cause, or if he resigns in connection with
either a reduction in his duties or a material reduction in his level of
compensation within twelve (12) months after the Company's appointment of a new
Chief Executive Officer, he will be entitled to (i) twelve (12) months of salary
continuation payments and (ii) twelve (12) months of accelerated vesting in his
outstanding stock options.


     For purposes of the agreements described above with Messrs. Wolf and
Ranhoff and Dr. Siddall: (i) a change in control will be deemed to occur upon an
acquisition of the Company by merger, asset sale, the completion of a successful
tender or exchange offer for more than 50% of the Company's outstanding common
stock or a change in the majority of the Board through one or more contested
elections, and (ii) a for cause termination of employment


                                       27
<PAGE>

will generally be if such termination occurs by reason of the individual's
commission of fraud, embezzlement or dishonesty; the unauthorized use or
disclosure of the Company's confidential or proprietary information; other
willful misconduct that has a materially adverse effect upon the Company's
business; or the material dereliction of his principal duties following a
reasonable opportunity to cure the identified performance deficiencies.

     The Compensation Committee of the Board of Directors has the authority as
Plan Administrator of the 1993 Plan to provide for the accelerated vesting of
the shares of common stock subject to outstanding options held by the Company's
executive officers, in the event their employment were to be terminated (whether
involuntarily or through a forced resignation) following (i) an acquisition of
the Company by merger or asset sale or (ii) a change in control of the Company
effected through a successful tender offer for more than 50% of the Company's
outstanding Common Stock or through a change in the majority of the Board as a
result of one or more contested elections for Board membership.

OPTION REPRICING

     As discussed in the Compensation Committee Report on Executive Compensation
below, the Company implemented a special option cancellation/regrant program for
all of its employees, including executive officers, holding stock options with
an exercise price per share in excess of the fair market value of the Company's
Common Stock on the regrant date. The cancellations/regrants were effected on
December 14, 1998, and a number of outstanding options with an exercise price in
excess of $17.00 per share were surrendered for cancellation and new options for
the same aggregate number of shares were granted with a lower exercise price of
$17.19 per share.

     The following table sets forth information with respect to each of the
Company's Named Executive Officers and each of the Company's other executive
officers concerning his participation in the option cancellation/regrant program
effected on December 14, 1998. The Company has not implemented any other option
cancellation/regrant programs in which the Company's executive officers have
participated:


<TABLE>
<CAPTION>

                                                                  MARKET
                                                   NUMBER OF     PRICE OF      EXERCISE                    LENGTH OF
                                                   SECURITIES    STOCK AT      PRICE AT                   OPTION TERM
                                                   UNDERLYING     TIME OF       TIME OF                   REMAINING AT
                                                    OPTIONS      REPRICING     REPRICING        NEW         DATE OF
                                       REPRICING    REPRICED        OR            OR          EXERCISE    REPRICING OR
               NAME                      DATE      OR AMENDED     AMENDMENT     AMENDMENT      PRICE       AMENDMENT
- ----------------------------------     --------    ---------    ----------    ----------     --------    ------------
<S>                                     <C>            <C>            <C>          <C>           <C>       <C>
Dennis P. Wolf.....................     12/14/98       80,000         17.19        26.44         17.19     9 1/2 years

David A. Ranhoff...................     12/14/98       50,000         17.19        29.50         17.19     9 years

Wilmer R. Bottoms..................     12/14/98         None           N/A          N/A           N/A         N/A

Jerry Bruce........................     12/14/98        2,500         17.19        20.88         17.19     8 1/2 years
                                        12/14/98        8,000         17.19        29.50         17.19     9 years
                                        12/14/98       10,000         17.19        29.00         17.19     9 years
</TABLE>


COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

     For most of the 1999 fiscal year, the Compensation Committee was comprised
of two members: Mr. Henkens and Mr. Vonderschmitt. Dr. Howard resigned from the
Compensation Committee on December 8, 1998 in connection with his appointment as
interim Chief Executive Officer. On December 8, 1999, the Board reconstituted
the Compensation Committee to consist of the following members: Mr. Tompkins and
Mr. Vonderschmitt.

     Mr. Vonderschmitt, a non-employee Board member, is the founder and Chairman
of Xilinx. Dr. Howard is also a member of the Xilinx Board of Directors. For the
fiscal years ended October 31, 1999, 1998 and 1997, the Company sold
approximately $4,551,000, $2,868,000 and $1,356,000, respectively, of products
and services to Xilinx. The accounts receivable with respect to such sales were
approximately $1,489,000, $554,000 and $2,000 at October 31, 1999, 1998 and
1997.

     Dr. William G. Howard, a director of the Company, was a director of VLSI
Technology, Inc. ("VLSI") from May 31, 1996 until June 1999. The Company's sales
to VLSI were approximately $5,625,000, $2,011,000, and $171,000 in fiscal 1999,
1998 and 1997, respectively. The amounts receivable from VLSI were approximately


                                       28
<PAGE>

$1,525,000 and $568,000 and October 31, 1999 and 1998, respectively. Dr. Howard
also serves as a director of Ramtron International, Inc. ("Ramtron"). The
Company's sales to Ramtron were approximately $1,000, $151,000, and $6,000 in
fiscal 1999, 1998 and 1997, respectively. Amounts receivable from Ramtron were
approximately zero and $1,000 at October 31, 1999 and 1998, respectively.

     No other executive officer of the Company serves as a member of the board
of directors or compensation committee of any entity which has one or more of
its executive officers serving as members of the Company's Board of Directors or
the Compensation Committee.

                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The Company's Restated Certificate of Incorporation and Restated Bylaws
provide for indemnification of directors and officers of the Company. Each of
the current directors and executive officers of the Company has entered into
separate indemnification agreements with the Company.

     The Company sells products and services to Israeli Test House, Inc.
("ITH"), a company in which the Company has an investment. For the years ended
October 31, 1999, 1998 and 1997, sales totaled approximately $14,700, $21,000
and $6,000, respectively. The amounts receivable from ITH, Inc. were
approximately $11,900, $345,000 and $324,000 at October 31, 1999, 1998 and 1997,
respectively.

                          COMPENSATION COMMITTEE REPORT

     The Compensation Committee of the Board of Directors is responsible for
establishing the base salary and incentive cash bonus programs for the Company's
executive officers and other key employees and administering certain other
compensation programs for such individuals, subject in each instance to review
by the full Board. The Compensation Committee also has the exclusive
responsibility for the administration of the Company's 1993 Stock Option Plan
under which grants may be made to executive officers and other key employees.
For most of fiscal year 1999, the Compensation Committee consisted of two
members: Mr. Henkens and Mr. Vonderschmitt. Dr. Howard resigned from the
Compensation Committee on December 8, 1998 in connection with his appointment as
interim Chief Executive Officer. On December 8, 1999, the Board reconstituted
the Compensation Committee to consist of the following members: Mr. Tompkins and
Mr. Vonderschmitt.

     GENERAL COMPENSATION POLICY. The fundamental policy of the Compensation
Committee is to provide the Company's executive officers and other key employees
with competitive compensation opportunities based upon their contribution to the
financial success of the Company and their personal performance. It is the
Compensation Committee's objective to make a substantial portion of each
officer's compensation contingent upon the Company's performance as well as upon
the officer's own level of performance. Accordingly, the compensation package
for each executive officer and key employee is comprised of three elements: (i)
base salary which reflects individual performance and is designed primarily to
be competitive with salary levels in the industry, (ii) annual variable
performance awards payable in cash and tied to the Company's achievement of
financial performance targets, and (iii) long-term stock-based incentive awards
which strengthen the mutuality of interests between the executive officers and
the Company's stockholders. As an executive officer's level of responsibility
increases, it is the intent of the Compensation Committee to have a greater
portion of the executive officer's total compensation be dependent upon Company
performance and stock price appreciation rather than base salary.

     FACTORS. The principal factors which the Compensation Committee considered
in establishing the components of each executive officer's compensation package
for the 1999 fiscal year are summarized below. The Compensation Committee may,
however, in its discretion apply entirely different factors, particularly
different measures of financial performance, in setting executive compensation
for future fiscal years.

     BASE SALARY. For comparative compensation purposes for the 1999 fiscal
year, the Compensation Committee has identified a peer group of companies which
provide manufacturing and testing equipment to the semiconductor industry. The
base salary for each officer is determined on the basis of the following
factors: the salary levels in effect for comparable positions at the peer group
companies (determined on the basis of their published 1998 market data), the
experience and personal performance of the officer and internal comparability
considerations. The weight given to each of these factors differs from
individual to individual, as the Compensation Committee deems appropriate. The
compensation level for the Company's executive officers for the 1999 fiscal year
ranged from the


                                       29
<PAGE>

sixty-sixth (66th) percentile to the ninety-sixth (96th) percentile of the base
in effect for executive officers with comparable positions at the peer group
companies, based on the published 1998 market data for those companies.

     For purposes of the stock price performance graph which appears later in
this Proxy Statement, the Company has selected the Nasdaq Electronic Components
Index as the industry index. Twelve of the companies included in that index were
also among the companies which the Committee surveyed as part of the peer group
for comparative purposes. However, in selecting companies to survey for such
compensation purposes, the Compensation Committee considers many factors not
directly associated with stock price performance, such as geographic location,
growth rate, annual revenue and profitability, and market capitalization. For
this reason, the number of companies surveyed for compensation data was
substantially less than the number of companies included in the Nasdaq
Electronic Components Index.

     ANNUAL INCENTIVE COMPENSATION. Annual bonuses are earned by each executive
officer primarily on the basis of the Company's achievement of certain corporate
financial performance targets established for each fiscal year. For fiscal year
1999, bonuses were earned on the basis of the following factors: (i) the
Company's earnings per share and revenue targets established for each fiscal
quarter and (ii) the Company's earnings per share and revenue targets for the
fiscal year. The total cash compensation paid to the Company's executive
officers for the 1999 fiscal year ranged from the seventy-first (71st)
percentile to the one hundred fifth (105th) percentile of the total cash
compensation paid to executive officers in comparable positions at the peer
group companies, based on the published 1998 market data for those companies.
The actual bonus paid for the year to each of the current executive officers
named in the Summary Compensation Table is indicated in the bonus column.

     LONG-TERM INCENTIVE COMPENSATION. Long-term incentives are provided through
stock option grants. The grants are designed to align the interest of each
executive officer with those of the stockholders and provide each individual
with a significant incentive to manage the Company from the perspective of an
owner with an equity stake in the business. Each grant allows the individual to
acquire shares of the Company's common stock at a fixed price per share (the
market price on the grant date) over a specified period of time (up to 10
years). Each option generally becomes exercisable in installments over a
four-year period, contingent upon the executive officer's continued employment
with the Company. Accordingly, the option will provide a return to the executive
officer only if the executive officer remains employed by the Company during the
vesting period, and then only if the market price of the underlying shares
appreciates over the option term.

     The number of shares subject to each option grant is set at a level
intended to create a meaningful opportunity for stock ownership based on the
officer's current position with the Company, the base salary associated with
that position, the size of comparable awards made to individuals in similar
positions within the industry, the individual's potential for increased
responsibility and promotion over the option term, and the individual's personal
performance in recent periods. The Compensation Committee also takes into
account the number of unvested options held by the executive officer in order to
maintain an appropriate level of equity incentive for that individual. However,
the Compensation Committee does not adhere to any specific guidelines as to the
relative option holding of the Company's executive officers.

     During the 1999 fiscal year, stock options were granted to all of the
executive officers named in the Summary Compensation Table. Please refer to the
"Summary Compensation Table" and the table "Option Grants in Last Fiscal Year."

CHIEF EXECUTIVE OFFICER PERFORMANCE AND COMPENSATION

     DR. GRAHAM J. SIDDALL. During the 1999 fiscal year, Dr. Siddall served as
Chief Executive Officer. In connection with his appointment as Chief Executive
Officer in July 1999, the Committee set his annual base salary at $400,000
effective July 29, 1999, and provided him with a variety of potential bonuses.
In setting Dr. Siddall's base salary as Chief Executive Officer, the
Compensation Committee sought to achieve two objectives: (i) establish a level
of base salary competitive with that paid to other chief executive officers of
the peer group companies and (ii) make a significant percentage of the total
compensation package contingent upon Company performance and stock price
appreciation. The base salary established for Dr. Siddall on the basis of the
foregoing criteria was intended to provide him with a level of stability and
certainty each year. Accordingly, this element of Dr. Siddall's compensation was
not affected to a significant degree by Company performance factors and was, for
the 1999 fiscal year, at the one hundred eighth (108th percentile) of the base
salary levels in effect for other chief executive officers at the same peer

                                       30
<PAGE>

group of companies surveyed for comparative compensation purposes for all other
officers of the Company and based upon published 1998 market data. For the 1999
fiscal year, Dr. Siddall received a bonus in the amount of $62,500 for the
fourth fiscal quarter of 1999 pursuant to his employment agreement. A stock
option for 500,000 shares of Common Stock was granted to Dr. Siddall on July 29,
1999 in connection with his appointment as Chief Executive Officer. Such option
will become exercisable for the option shares in a series of forty-eight (48)
successive equal monthly installments upon his completion of each month of
service over the forty-eight (48) month period measured from the grant date of
that option. Accordingly, the option (and all other options) will provide a
return to the Chief Executive Officer only if the Chief Executive Officer
remains employed by the Company during the four-year vesting period, and then
only if the market price of the underlying shares appreciates over the option
term. In addition, Dr. Siddall received a $125,000 sign-on bonus on September 9,
1999 in connection with his appointment as Chief Executive Officer.

     Dr. Bottoms, a former Chief Executive Officer and Dr. Howard, a former
interim Chief Executive Officer, also received compensation from the Company in
1999. Please see "Employment Contracts, Termination of Employment Arrangements
and Change of Control Agreements."

SPECIAL OPTION REGRANT PROGRAM

     In December 1998, the Compensation Committee felt that circumstances had
made it necessary for the Company to implement an option cancellation/regrant
program. Accordingly, on November 5, 1998, all of the Company's employees,
including executive officers, were given the opportunity to surrender their
outstanding options under the 1993 Stock Option Plan with exercise prices in
excess of $17.00 per share in return for a new option grant for the same number
of shares which was made on December 14, 1998 with a lower exercise price of
$17.1875 per share, the fair market value per share of the Company's common
stock on the regrant date. Each employee eligible for a new option grant was
given the choice of accepting that option with a new vesting schedule in
cancellation of his or her higher-priced option or rejecting the new grant and
retaining the higher-priced option with its original vesting schedule.

     The Compensation Committee determined that this program was necessary
because equity incentives are a significant component of the total compensation
package of each key Company employee and play a substantial role in the
Company's ability to retain the services of individuals essential to the
Company's long-term financial success. The Compensation Committee felt that the
Company's ability to retain key employees would be significantly impaired,
unless value were restored to their options in the form of regranted options at
the current market price of the Company's common stock. However, in order for
the regranted options to serve their primary purpose of assuring the continued
service of each optionee, a new vesting schedule was imposed with respect to the
option shares. The shares subject to most of the new options will vest as
follows: (i) 12.5% of the option shares will vest upon the optionee's completion
of six months of service with the Company for measured from the December 14,
1998 grant date, and (ii) the new option will vest and become exercisable for
the remaining option shares in a series of fourteen successive equal quarterly
installments upon the optionee's completion of each additional three-month
period of service thereafter. For each performance vesting option cancelled and
regranted in connection with the December 14, 1998 program, the new option will
become exercisable for the option shares upon the optionee's completion of six
years of service (or seven years of service for certain of those grants)
measured from the December 14, 1998 grant date, subject to earlier vesting in
the event certain pre-defined performance objectives are attained during the
optionee's period of service with the Company. Accordingly, each optionee will
only have the opportunity to acquire the option shares at the lower exercise
price if he or she remains in the Company's employ.


     As a result of the new vesting schedules imposed on the regranted options,
the Compensation Committee believes that the program strikes an appropriate
balance between the interests of the option holders and those of the
stockholders. The lower exercise prices in effect under the regranted options
make those options valuable once again to the executive officers and key
employees critical to the Company's financial performance. However, those
individuals will enjoy the benefits of the regranted options only if they in
fact remain in the Company's employ and contribute to the Company's financial
success.



     COMPLIANCE WITH INTERNAL REVENUE CODE SECTION 162(m). Section 162(m) of the
Internal Revenue Code, enacted in 1993, generally disallows a tax deduction to
publicly held companies for compensation exceeding $1 million paid to certain of
the corporation's executive officers. The compensation paid to the Company's
executive officers for the 1998 fiscal year did not exceed the $1 million limit
per officer, nor is it expected that the


                                       31
<PAGE>



compensation to be paid to the Company's executive officers for fiscal 1999 will
exceed that limit. The Company's 1993 Plan is structured so that any
compensation deemed paid to an executive officer when he exercises an
outstanding option under the 1993 Plan will qualify as performance-based
compensation which will not be subject to the $1 million limitation. Because it
is very unlikely that the cash compensation payable to any of the Company's
executive officers in the foreseeable future will approach the $1 million limit,
the Compensation Committee has decided at this time not to take any other action
to limit or restructure the elements of cash compensation payable to the
Company's executive officers. The Compensation Committee will reconsider this
decision should the individual compensation of any executive officer ever
approach the $1 million level.


                                                 Jos C. Henkens
                                                 Bernard V. Vonderschmitt


                                       32
<PAGE>


                        COMPARISON OF STOCKHOLDER RETURN


     The graph depicted below reflects a comparison of the cumulative total
return (change in stock price plus reinvestment dividends) of the Company's
Common Stock with the cumulative total returns of the Nasdaq Stock Market Index
and Nasdaq Electronic Components Index.


                             [GRAPHIC APPEARS HERE]
<TABLE>
<CAPTION>

                                             Cumulative Total Return
                                   ---------------------------------------------
                                   10/94   10/95   10/96   10/97   10/98   10/99
<S>                                <C>     <C>     <C>     <C>     <C>     <C>
CREDENCE SYSTEMS CORPORATION       100     220      80     174      88     274
NASDAQ STOCK MARKET (U.S.)         100     135     159     209     234     364
NASDAQ ELECTRONIC COMPONENTS       100     201     245     336     347     658

</TABLE>

- ----------------

(1)  The graph covers the period from October 28, 1993, the date the Company's
     initial public offering commenced, through the fiscal year ended October
     31, 1999.

(2)  The graph assumes that $100 was invested on October 28, 1993 in the
     Company's common stock and in each index and that all dividends were
     reinvested. No cash dividends have been declared on the Company's common
     stock.

(3)  Stockholder returns over the indicated period should not be considered
     indicative of future stockholder returns.

(4)  The performance graph and all of the material in the Compensation Committee
     Report is not deemed filed with the Securities and Exchange Commission, and
     is not incorporated by reference to any filing of the Company under the
     Securities Act of 1933, as amended or the Securities Exchange Act of 1934,
     as amended, whether made before or after the date of this Proxy Statement
     and irrespective of any general incorporation language in any such filing.


                                       33
<PAGE>


      COMPLIANCE WITH SECTION 16(a) OF THE SECURITIES EXCHANGE ACT OF 1934

     Section 16(a) of the Securities Exchange Act of 1934, as amended, requires
the Company's directors, executive officers and any persons holding more than
ten percent of the Company's common stock to file reports of ownership and
changes in ownership with the Securities and Exchange Commission ("SEC").
Directors, executive officers and greater than ten percent stockholders are
required by SEC regulations to furnish the Company with copies of all Section
16(a) forms they file.

     Based solely on its review of the copies of such forms received by it and
written representations from certain reporting persons for the 1999 fiscal year
that no Form 5 reports were required for such persons for the 1999 fiscal year,
the Company believes that, except as set forth below, there was compliance with
all Section 16(a) filing requirements applicable to such directors, executive
officers and greater than ten percent stockholders for the 1999 fiscal year.

     When Mr. Jon D. Tompkins joined the Board of Directors in September 1999,
he did not timely file the Form 3 required in connection therewith.

                                  ANNUAL REPORT

       A copy of the Annual Report of the Company for the fiscal year ended
October 31, 1999 has been mailed concurrently with this Proxy Statement to all
stockholders entitled to notice of and to vote at the Annual Meeting. The Annual
Report is not incorporated into this Proxy Statement and is not considered proxy
solicitation material.

                                    FORM 10-K

     The Company filed an Annual Report on Form 10-K for the fiscal year ended
October 31, 1999 with the SEC. Stockholders may obtain a copy of this report,
without charge, by writing to Mr. John Detwiler, the Company's Vice President,
Corporate Controller at the Company's headquarters at 215 Fourier Avenue,
Fremont, California 94539.

Dated: February 28, 2000



                                               THE BOARD OF DIRECTORS
                                               OF CREDENCE SYSTEMS CORPORATION

                                       34
<PAGE>

                                                                      APPENDIX A

                         CREDENCE SYSTEMS CORPORATION

                          EMPLOYEE STOCK PURCHASE PLAN

               (As Amended and Restated Through December 8, 1999)

1.        PURPOSE OF THE PLAN

          The Credence Systems Corporation 1994 Employee Stock Purchase Plan
(the "Plan") is intended to provide a suitable means by which eligible employees
of the Credence Systems Corporation (the "Company") may accumulate, through
voluntary, systematic payroll deductions, amounts regularly credited to their
account to be applied to the purchase of shares of the Company's common stock,
par value $0.001 (the "Common Stock"), pursuant to the exercise of options
granted from time to time hereunder. The Plan provides employees with the
opportunities to acquire proprietary interests in the Company, and will also
provide them with additional incentives to continue their employment and promote
the best interests of the Company. Options granted under the Plan are intended
to qualify under Section 423 of the Internal Revenue Code of 1986, as amended
(the "Code").

2.        SHARES OF STOCK SUBJECT TO THE PLAN

          Subject to the provisions of Section 12, the number of shares of
Common Stock which may be issued on the exercise of options granted under the
Plan will initially be limited to 800,000 shares of the Company's Common Stock.
Such share reserve includes (i) the initial share reserve of 300,000 shares;(1)
(ii) an additional 200,000 share increase authorized by the Board on February
12, 1997 and approved by the stockholders at the 1997 Annual Meeting; and (iii)
an additional 300,000 share increase authorized by the Board on January 22, 1999
and approved by the stockholders at the 1999 Annual Meeting.

          The number of shares of Common Stock available for issuance under the
Plan shall automatically increase on the first trading day of each fiscal year
over the remaining term of the Plan, beginning with the fiscal year commencing
November 1, 2000, by an amount equal to one-half of one percent (0.50%) of the
total number of shares of Common Stock outstanding on the last trading day in
the immediately preceding fiscal year, but in no event shall any such annual
increase exceed 250,000 shares.

          Any shares subject to an option under the Plan, which option for any
reason expires or is terminated unexercised as to such shares, shall again be
available for issuance on the exercise of other options granted under the Plan.
Shares delivered on the exercise of options may, at the election of the Board of
Directors of the Company, be authorized but previously unissued Common Stock or
Common Stock reacquired by the Company, or both.

- -----------------
(1) Reflects the 3-for-2 split of the Corporation's outstanding Common Stock
effected June 5, 1995.

<PAGE>

3.        ADMINISTRATION

          The Plan shall be administered by the Compensation Committee (the
"Committee") of the Company's Board of Directors, which shall be composed of not
less than two non-employee members of the Board of Directors of the Company, all
of whom shall be ineligible to participate in this Plan and shall otherwise
qualify as disinterested persons under Rule 16b-3(b)(3)(i) promulgated by the
Securities and Exchange Commission. Subject to the provisions of the Plan, the
Committee shall have full discretion and authority (i) to determine the terms
and conditions under which the shares shall be offered and corresponding options
shall be granted under the Plan for each Offering Period (as defined in Section
4) consistent with the provisions of the Plan, and (ii) to resolve all questions
relating to the administration of the Plan.

          The interpretation and application by the Committee of any provision
of the Plan shall be final and conclusive on all employees and others persons
having, or claiming to have, an interest under the Plan. The Committee may, in
its discretion, establish such rules and guidelines relating to the Plan as it
may deem desirable.

          The Committee may employ such legal counsel, consultants and agents as
it may deem desirable for the administration of the Plan and may rely upon any
opinion received from any such counsel or consultant and any computation
received from any such counsel or consultant or agent. The Committee shall keep
minutes of its actions under the Plan.

          No member of the Board of Directors or the Committee shall be liable
for any action or determination made in good faith with respect to the Plan or
any options granted hereunder.

4.        OFFERING PERIODS

          Shares of Common Stock shall be offered for purchase under the Plan
through a series of successive Offering Periods until such time as (i) the
maximum number of shares of Common Stock available for issuance under the Plan
shall have been purchased or (ii) the Plan shall have been sooner terminated.

          Each OFFERING PERIOD shall be of such duration (not to exceed twelve
(12) months) as determined by the Committee prior to the start date of such
Offering Period. However, the initial Offering Period under this December 1999
Restatement shall commence on August 15, 2000 and terminate on August 14, 2001.
The next Offering Period shall commence on August 15, 2001, and subsequent
Offering Periods shall commence as designated by the Committee. Prior to August
15, 2000, there shall be an interim Offering Period from January 1, 2000 to
August 14, 2000, with a Purchase Date occurring on the August 14, 2000 ending
date of that period.




                                       2.
<PAGE>


          Each Offering Period shall consist of a series of one or more
successive Purchase Intervals. PURCHASE INTERVALS shall run from February 15 to
August 14 each year and from August 15 each year to February 14 of the following
year. Shares of Common Stock shall be purchased on the following semi-annual
PURCHASE DATES each year: February 14 and August 14.

          Should the Fair Market Value per share of Common Stock on any Purchase
Date within an Offering Period be less than the Fair Market Value per share of
Common Stock on the start date of that Offering Period, then that Offering
Period shall automatically terminate immediately after the purchase of shares of
Common Stock on such Purchase Date, and a new Offering Period shall commence on
the next business day following such Purchase Date. The new Offering Period
shall have a duration of twenty (24) months, unless a shorter duration is
established by the Committee within five (5) business days following the start
date of that Offering Period.

5.        ELIGIBILITY TO PARTICIPATE

          The persons eligible to participate in this Plan shall be all
employees (including officers) of the Company, or any participating affiliate,
who have been actively employed by the Company, or such affiliate, for at least
thirty (30) consecutive days as of their entry date into any Offering Period,
but excluding employees whose customary employment is for not more than five (5)
months in any calendar year or is for twenty (20) hours or less per week. An
employee who is eligible to participate in this Plan pursuant to the foregoing
requirements is hereinafter referred to as an EMPLOYEE. A participating
affiliate, for purposes of the Plan, shall include any now existing or hereafter
established parent or subsidiary corporation of the Company, as determined in
accordance with Code Sections 424(e) and 424(f), which elects, with the consent
of the Company's Board of Directors, to extend the benefits of the Plan to its
eligible employees.

          Nothing contained in the Plan shall confer upon any Employee any right
to continue in the employ of the Company or any of its affiliates, or interfere
in any way with the right of the Company or any of its affiliates to terminate
his or her employment at any time.

6.        PARTICIPATION IN THE PLAN

          An Employee may join a particular Offering Period either as of the
start date of that Offering Period or on any Semi-Annual Entry Date within that
Offering Period on which he or she remains an Employee. SEMI-ANNUAL ENTRY DATES
shall occur on the 15th day of February and August each calendar year within the
Offering Period. The date on which the Employee joins the Offering Period shall
be designated his or her ENTRY DATE. A copy of the Plan will be furnished to
each Employee prior to his or her Entry Date for the first Offering Period
during which he or she participates in the Plan.

          To participate in the Plan, an Employee must deliver (or cause to be
delivered) to the Company, within seven (7) days prior to his or her Entry Date
into the first Offering Period during which participation in the Plan is
desired, a contingent subscription for Common Stock and authorization for
payroll deductions to effect the purchase of Common Stock (hereinafter called a
"Participation Election"). In the Participation Election an Employee must:


                                       3.
<PAGE>

               (i) authorize payroll deductions within the limits prescribed in
          Sections 9 and 10 and specify the percentage to be deducted regularly
          from his or her Compensation (as defined in Section 9);

               (ii) elect and authorize the purchase on each Purchase Date
          within the Offering Period of a specific number of shares of Common
          Stock, provided that such specific number of shares shall not exceed a
          total of 750 shares on any one Purchase Date;

               (iii) furnish the exact name or names and address or addresses in
          which the stock certificates for Common Stock purchased by him or her
          under the Plan are to be issued; and

               (iv) agree to notify the Company if he or she should dispose of
          the shares of Common Stock purchased through the Plan within two (2)
          years after his or her Entry Date into the Offering Period in which
          those shares were purchased or within one (1) after the Purchase Date
          of those shares.

         The Committee may increase or decrease the per-Employee share
limitation of clause (ii) above as of the start date of any future Offering
Period.

         Stock certificates for shares of Common Stock purchased under the Plan
may be issued in the Employee's name or, if so designated by the Employee, in
his or her name and the name of another person who is a member of his or her
family, with right of survivorship; for this purpose the "family" of an Employee
shall include only his or her spouse, ancestors and lineal descendants and
brothers and sisters.

          An Employee need not, and may not, make a down payment in order to
participate in the Plan.

          Participation in the Plan is entirely voluntary, and a participating
Employee may withdraw from participation, as provided in Section 16, during any
Purchase Interval at any time prior to the scheduled Purchase Date for that
Purchase Interval.

7.        GRANT OF OPTIONS

          During each Offering Period, participating Employees shall accumulate
credits to a bookkeeping account maintained by the Company (hereinafter referred
to as a "Stock Purchase Account") through payroll deductions to be made at the
close of each pay period for the purchase of shares of Common Stock on each
semi-annual Purchase Date within that Offering Period. Accordingly, each
participating Employee shall be granted a separate purchase option for each
Offering Period in which he or she participates. The purchase option shall be
granted on the Employee's Entry Date into the Offering Period and shall provide
the Employee with the right to purchase shares of Common Stock, in a series of
successive installments over the remainder of that Offering Period, subject to
the provisions of sections 2, 6, 12 and 13. The purchases shall be



                                       4.
<PAGE>


effected by applying the amounts credited to such Employee's Stock Account to
the acquisition of shares of Common Stock on each Purchase Date within
the Offering Period on which such Employee remains a participant (such
number of shares to be subject to reduction in the event of a pro rata
apportionment provided for in Section 18).

8.        PURCHASE PRICE

          The purchase price per share at which Common Stock will be purchased
on the Employee's behalf on each semi-annual Purchase Date within the Offering
Period shall be equal to eighty-five percent (85%) of the lower of (i) the Fair
Market Value per share of Common Stock on the Employee's Entry Date into that
Offering Period or (ii) the Fair Market Value per share of Common Stock on that
Purchase Date.

          For purposes of the Plan, the Fair Market Value of a share of Common
Stock on any relevant date shall be the mean between the high and low selling
prices of such Common Stock reported for such date or, if such date is not a
business day, then the immediately preceding business day, on the Nasdaq
National Market and published in THE WALL STREET JOURNAL.

9.        PAYROLL DEDUCTIONS - AUTHORIZATION AND AMOUNT

          Employees shall authorize in their Participation Elections from 1% to
10% (in whole percentage increments) of their Compensation to which such
election relates (subject to the limitations of Section 10). For purposes of the
Plan, the "Compensation" of an Employee for any Purchase Interval shall mean the
gross amount of his or her base pay on the basis of his or her regular,
straight-time hourly, weekly or monthly rate for the number of hours normally
worked, exclusive of overtime, sales commissions, bonuses, shift premiums and
other forms of compensation.

          A participating Employee may, at any time during a Purchase Interval,
reduce the amount of Compensation to be deducted from his or her Compensation
pursuant to his or her Participant Election.

          By delivering to the Company within seven (7) days prior to the
commencement of the next Purchase Interval a revised Participation Election, a
participating Employee may either increase or decrease the amount to be deducted
from his or her Compensation during the remaining Purchase Intervals in the
Offering Period, subject to the limitations of this Section 9 and Section 10.

          A participating Employee's authorization for payroll deductions will
remain in effect for the duration of the Plan, subject to the provisions of
Sections 12 and 15, unless his or her election to purchase Common Stock shall
have been terminated pursuant to the provisions of Section 14, the amount of the
deduction is changed, as provided in this Section 9, or the Employee withdraws
or is considered to have withdrawn from the Plan under Section 16 or 17.




                                       5.
<PAGE>


          Prior to the split of the Common Stock effected June 5, 1995, the
maximum number of shares of Common Stock purchasable per participating Employee
on any one Purchase Date under the Purchase Plan was limited to 500 shares. To
reflect such stock split, the limit has been increased to 750 shares per
participating Employee for each Purchase Date after May 26, 1995.

          All amounts credited to the Stock Purchase Accounts of participating
Employees shall be held in the general funds of the Company but shall be used
from time to time in accordance with the provisions of the Plan.

10.       LIMITATIONS ON THE GRANTING OF OPTIONS

          Anything in the Plan to the contrary notwithstanding, no participating
Employee may be granted an option which permits his or her rights to purchase
Common Stock under all employee stock purchase plans of the Company and its
parent and subsidiary companies (if any) to accrue at a rate which exceeds
$25,000 of the Fair Market Value of such Common Stock (determined at the time
such option is granted) for each calendar year in which such option is
outstanding at any time. For purposes of this Section 10:

               (i) The right to acquire Common Stock under each outstanding
          purchase option shall accrue in a series of installments on each
          successive Purchase Date during the Offering Period on which such
          option remains outstanding.

               (ii) No right to acquire Common Stock under any outstanding
          purchase option shall accrue to the extent the Employee has already
          accrued in the same calendar year the right to acquire Common Stock
          under one or more other purchase options at a rate equal to
          Twenty-Five Thousand Dollars ($25,000.00) worth of Common Stock
          (determined on the basis of the Fair Market Value per share on the
          date or dates of grant) for each calendar year such options were at
          any time outstanding.

               (iii) If by reason of such accrual limitations, any purchase
          option of an Employee does not accrue for a particular Purchase
          Interval, then the payroll deductions that the Employee made during
          that Purchase Interval with respect to such purchase option shall be
          promptly refunded.

          No participating Employee may be granted an option hereunder if such
Employee, immediately after the option is granted, owns (within the meaning of
Section 423 (b) (3) of the Code) stock possessing five (5) percent or more of
the total combined voting power or value of all classes of stock of the Company
or of its parent or subsidiary corporation. For purposes of the Plan, the terms
"parent corporation" and "subsidiary corporation" shall have the respective
meanings set forth in section 424 of the Code.


                                       6.
<PAGE>

11.       STOCK PURCHASE AMOUNTS

          The amount deducted from the Compensation of each participating
Employee shall be credited to his or her individual Stock Purchase Account.
Employees participating in the Plan may not make direct cash payments to their
Stock Purchase Accounts.

          Following each Purchase Date, the Company will furnish to each
participating Employee a statement of that Employee's individual Stock Purchase
Account. This statement shall show (i) the total amount of payroll deductions
for the Purchase Interval ending with such Purchase Date, (ii) the number of
full shares (and the purchase price per share) of Common Stock purchased,
pursuant to the provisions of Section 12, by the participating Employee on that
Purchase Date, and (iii) any remaining balance of payroll deductions which are
to be refunded to the Employee following the close of the Purchase Interval (or
carried forward to the next Purchase Interval in the case of amounts
representing fractional shares).

12.       ISSUANCE AND PURCHASE OF COMMON STOCK

          Shares of Common Stock may be purchased by a participating Employee
only on a semi-annual Purchase Date within the Offering Period; and the options
which the Company grants to participating Employees for the purchase of Common
Stock for a particular Offering Period may be exercised only on the Purchase
Dates within that Offering Period on which such Employee remains a participant.
No fractional shares of Common Stock may be purchased hereunder. The purchase
price per share for each participating Employee shall be determined as set forth
in Section 8.

          A participating Employee shall, pursuant to the exercise of the
options granted to him or her under the Plan, purchase as many full shares as
shall be stated in the Participation Election that the Employee has completed,
subject to the limitations set forth in Sections 6, 9, 10, 13 and 18; provided
that in no even may shares be purchased other than by application of the balance
in the Stock Purchase Account on the Purchase Date and that in no event may a
participating Employee purchase a greater number of shares than would be
purchasable at the purchase price determined for such Employee in accordance
with Section 8 through the application of the balance in his or her Stock
Purchase Account on such Purchase Date. Any balance remaining in such a
participating Employee's Stock Purchase Account following a Purchase Date shall
be refunded to the Employee as soon as practicable thereafter; provided,
however, that any such balance representing a fractional share shall be carried
over to the next succeeding Purchase Interval

          Certificates for Common Stock so purchased shall be delivered to the
participating Employee as soon as practicable.


                                       7.
<PAGE>


          All rights as an owner of shares of the Common Stock purchased under
the Plan shall accrue to the participating Employee who purchased the shares
effective as of the Purchase Date on which the amounts credited to his or her
Stock Purchase Account were applied to the purchase of those shares; and such
Employee shall not have any rights as a shareholder prior to such Purchase Date
by reason of his or her having elected to purchase such shares.

13.       CORPORATE TRANSACTIONS AND OTHER CHANGES IN CAPITALIZATION.

          If the Company is a party to any merger or consolidation, or undergoes
any separation, reorganization (other than a reincorporation in another state)
or liquidation (collectively, a "CORPORATE TRANSACTION"), then the options
outstanding under the Plan shall be exercised immediately prior to the effective
date of such Corporate Transaction, and such date shall accordingly qualify as a
Purchase Date for the Offering Period in which such Corporate Transaction
occurs. The purchase price payable per share of Common Stock on such Purchase
Date shall be equal to eighty-five percent (85%) of the lower of (i) the Fair
Market Value per share of Common Stock on the Employee's Entry Date into the
Offering Period in which such Corporate Transaction occurs or (ii) the Fair
Market Value per share of Common Stock immediately prior to the effective date
of such Corporate Transaction. However, the applicable limitation on the number
of shares of Common Stock purchasable per participating Employee shall continue
to apply to such purchase.

          In the event of a reclassification, stock split, combination of
shares, separation (including a spin-off), dividend on shares of the Common
Stock payable in stock, or other similar change in capitalization or in the
corporate structure of the shares of the Common Stock of the Company, the
Committee shall conclusively determine the appropriate adjustment in (i) the
purchase price and other terms of purchase for shares subject to outstanding
Participation Elections for the Offering Period in effect at such time, (ii) the
number and kind of shares or other securities which may by purchased on each
Purchase Date within that Offering Period, (iii) the maximum number and kind of
shares or other securities which may be purchased under the Plan, (iv) the
maximum number and kind of shares or other securities which may be purchased per
Employee on any Purchase Date within that Offering Period and (v) the maximum
number and kind of shares or other securities by which the share reserve under
the Plan is to increase at the start of each fiscal year pursuant to the
automatic share increase provisions of Section 2. Any such adjustment in the
shares or other securities subject to the outstanding options granted to such
Employee (including any adjustments in the option price) shall be made in such
manner as not to constitute a modification as defined by Section 424(h)(3) of
the Code and only to the extent permitted by Sections 423 and 424 of the Code.

14.       NO ASSIGNMENT OF PLAN RIGHTS OR OF PURCHASED STOCK

          A participating Employee's privilege to purchase Common Stock under
the Plan can be exercised only by him or her; and he or she cannot purchase
Common Stock for someone else, although he or she may designate (in accordance
with the provisions of Section 6) that stock certificates of Common Stock
purchased by the Employee be issued in the joint names of the Employee and a
family member.




                                       8.
<PAGE>


          An Employee participating in the Plan may not sell, transfer, pledge,
or assign to any other person any interest, privilege or right under the Plan or
in any amounts credited to his or her Stock Purchase Account; and if this
provision shall be violated, his or her election to purchase Common Stock shall
terminate, and the only right remaining thereunder will be to have paid to the
person entitled thereto the amount then credited to the Employee's Stock
Purchase Account.

15.       SUSPENSION OF DEDUCTIONS

          A participating Employee's payroll deductions under the Plan shall be
suspended if on account of a leave of absence, layoff or other reason a
participating Employee does not have sufficient Compensation in any payroll
period to permit payroll deductions authorized under the Plan to be made in
full. The suspension will last until the participating Employee again has
sufficient Compensation to permit such payroll deductions to be made in full;
but if the suspension shall not have been removed by the end of the Purchase
Interval in which it began, shares will be purchased on the Purchase Date for
that Purchase Interval, to the extent that the Employee contributed funds prior
to the suspension of deductions. In the event of voluntary withdrawal or
termination of employment, funds will be returned to the Employee as provided in
Section 16.

16.       WITHDRAWAL FROM, AND REPARTICIPATION IN THE PLAN

          During any Purchase Interval, a participating Employee may withdraw
from the Plan at any time prior to the Purchase Date for that Purchase Interval;
and, subject to, and in accordance with the provisions of Sections 6 and 9, he
or she may again participate in the Plan at the beginning of any new Purchase
Interval subsequent to the Purchase Interval in which he or she withdrew, and
that date shall be the Employee's new Entry Date for the remaining Purchase
Intervals within the Offering Period and for purposes of determining the
purchase price to be in effect for the Employee under Section 8 on each
subsequent Purchase Date within that Offering Period. Withdrawal of a
participating Employee shall be effected by written notification prior to such
Purchase Date to the Company on a form which the Company shall provide for this
purpose ("Notice of Withdrawal"). In the event a participating Employee shall
withdraw from the Plan, all amounts then credited to his or her Stock Purchase
Account shall be returned as soon as practicable after his or her Notice of
Withdrawal shall have been received.

          If an Employee's payroll deductions shall be interrupted by any legal
process, a Notice of Withdrawal will be considered as having been received on
the day the interruption shall occur.

17.       TERMINATION OF PARTICIPATION

          A participating Employee's right to continue participation in the Plan
will terminate upon the EARLIEST to occur of (i) the Company's termination of
the Plan, (ii) the Employee's transfer to ineligible employment status, or (iii)
retirement, disability, death or other termination of employment with the
Company. Upon the termination of an Employee's right to continue participation
in the Plan on account of the occurrence of any of the foregoing events, all


                                       9.
<PAGE>

amounts then credited to the individual's Stock Purchase Account not already
used for the purchase of Common Stock will be repaid as soon as practicable.
Such repayments shall be made to the participating Employee unless the
termination of participation occurred by reason of such Employee's death, in
which event such repayment shall be made to such Employee's beneficiary. For
this purpose, an Employee's beneficiary shall be the person, persons or entity
designated by the Employee on a form prescribed by and delivered to the Company
or, in the absence of an effective beneficiary designation, the Employee's
estate; provided, however, that the determination of the Employee's beneficiary
hereunder shall be subject to any applicable community property or other laws.

18.       APPORTIONMENT OF STOCK

          If at any time shares of Common Stock authorized for purposes of the
Plan shall not be available in sufficient number to meet the purchase
requirements under all outstanding Participation Elections, the Committee shall
apportion the remaining available shares among the participating Employees on a
pro rata basis. In no case shall any apportionment of shares be made with
respect to a participating Employee's election to purchase unless such election
is then in effect (subject only to any suspension provided for in the Plan). The
Committee shall give notice of such apportionment and of the method of
apportionment used to each participating Employee to whom shares shall have been
apportioned.

19.       GOVERNMENT REGULATIONS

          The Plan, and the obligation of the Company to issue, sell and deliver
Common Stock under the Plan are subject to all applicable laws and to all
applicable rules, regulations and approvals of government agencies.

20.       AMENDMENT OR TERMINATION

          The Board of Directors of the Company may at any time amend, suspend
or terminate the Plan; provided, however, that no amendment (other than an
amendment authorized by Section 13) may be made increasing the maximum number of
shares of Common Stock which may be issued pursuant to the Plan, reducing the
minimum purchase price at which shares may be purchased hereunder or changing
the class of employees eligible to participate hereunder; without the approval
of the holders of a majority of the outstanding voting shares of the Company.

21.       EFFECTIVE DATE

          The Plan became effective upon adoption by the Board on January 20,
1994 and was approved by the Company's stockholders at the 1994 Annual Meeting.
The Plan was subsequently amended by the Board on February 12, 1997 to (i)
increase the maximum number of shares of Common Stock authorized for issuance
over the term of the Plan from 300,000 to 500,000 shares and (ii) extend the
termination date of the Plan from December 31, 1998 to December 31, 2003. The
February 1997 Amendment was approved by the stockholders at the 1997 Annual
Meeting. The Plan was again amended by the Board on January 22, 1999 to



                                      10.
<PAGE>

increase the maximum number of shares of Common Stock authorized for issuance
over the term of the Plan from 500,000 shares, to 800,000, and such
increase was approved by the stockholders at the 1999 Annual Meeting. No
purchase rights were granted, and no shares of Common Stock were issued, on the
basis of such 300,000 share increase until such stockholder approval had been
obtained. The Plan was again amended by the Board on December 8, 1999 (the
"December 1999 Amendment") to (i) implement an automatic share increase feature
whereby the number of shares reserved for issuance under the Plan will
automatically increase on the first trading day of each fiscal year, beginning
November 1, 2000, by an amount equal to one-half of one percent (0.5%) of the
total number of shares of the Company's Common Stock outstanding on the last day
of the immediately preceding fiscal year, but no such annual increase is to
exceed 250,000 shares, (ii) revise the Offering Periods in effect under the Plan
so that each such period may have a maximum duration of twelve (12) months, with
purchases to occur at six (6)-month intervals during the Offering Period on the
14th day of February and August each year, and (iii) extend the termination date
of the Purchase Plan to August 14, 2010. The December 1999 Amendment is subject
to stockholder approval at the 2000 Annual Meeting, and no purchase options will
be granted, and no shares of Common Stock will be issued, on the basis of such
December 1999 Amendment until and until such stockholder approval is obtained.

22.       TERMINATION

          The Plan shall terminate on August 14, 2010. Any unexpired Offering
Period that commenced prior to such termination date shall forthwith expire on
such termination date, which shall be deemed the final Purchase Date under the
Plan.


                                      11.
<PAGE>
                                                                      APPENDIX B

                          CREDENCE SYSTEMS CORPORATION
                             1993 STOCK OPTION PLAN
               (AS AMENDED AND RESTATED THROUGH FEBRUARY 9, 2000)

                                   ARTICLE ONE
                                     GENERAL

I.        PURPOSE OF THE PLAN

          A. This 1993 Stock Option Plan ("Plan") is intended to promote the
interests of Credence Systems Corporation, a Delaware corporation (the
"Corporation"), by providing (i) key employees (including officers) of the
Corporation (or its parent or subsidiary corporations) who are responsible for
the management, growth and financial success of the Corporation (or its parent
or subsidiary corporations), (ii) the non-employee members of the Corporation's
Board of Directors and (iii) consultants who provide valuable services to the
Corporation (or its parent or subsidiary corporations) with the opportunity to
acquire a proprietary interest, or otherwise increase their proprietary
interest, in the Corporation as an incentive for them to remain in the service
of the Corporation (or its parent or subsidiary corporations).

          B. The Discretionary Option Grant Program under this Plan became
effective on the first date on which the shares of the Corporation's Common
Stock were registered under Section 12(g) of the Securities Exchange Act of
1934. Such date is hereby designated as the Effective Date for that program. The
Automatic Option Grant Program under this Plan became effective immediately upon
the execution and final pricing of the Underwriting Agreement for the initial
public offering of the Corporation's Common Stock. The execution date of such
Underwriting Agreement is hereby designated as the Effective Date of the
Automatic Option Grant Program.

          C. This Plan shall serve as the successor to (i) the Corporation's
1984 Incentive Stock Option Plan (the "1984 Plan") and (ii) the ASIX Systems
Corporation 1989 Stock Option Plan (the "ASIX Plan") which the Corporation
assumed in connection with its acquisition of ASIX Systems Corporation by merger
effected October 27, 1989. The 1984 Plan and ASIX Plan shall be collectively
referred to in this document as the "Predecessor Plans", and no further option
grants or stock issuances shall be made under the Predecessor Plans from and
after the Effective Date of this Plan. All options outstanding under the
Predecessor Plans on the Effective Date of the Discretionary Option Grant
Program are hereby incorporated into this Plan and shall accordingly be treated
as outstanding options under this Plan. However, each outstanding option so
incorporated shall continue to be governed solely by the express terms and
conditions of the instrument evidencing such grant, and no provision of this
Plan shall be deemed to affect or otherwise modify the rights or obligations of
the holders of such incorporated options with respect to their acquisition of
shares of the Corporation's Common Stock thereunder.

II.       DEFINITIONS

          A. For purposes of the Plan, the following definitions shall be in
effect:

          BOARD: the Corporation's Board of Directors.

          CODE: the Internal Revenue Code of 1986, as amended.

          COMMITTEE: the committee of two (2) or more non-employee Board members
appointed by the Board to administer the Plan.

          COMMON STOCK: shares of the Corporation's common stock.

          CHANGE IN CONTROL: a change in ownership or control of the Corporation
effected through either of the following transactions:


<PAGE>


               a. any person or related group of persons (other than the
          Corporation or a person that directly or indirectly controls, is
          controlled by, or is under common control with, the Corporation)
          directly or indirectly acquires beneficial ownership (within the
          meaning of Rule 13d-3 of the 1934 Act) of securities possessing more
          than fifty percent (50%) of the total combined voting power of the
          Corporation's outstanding securities pursuant to a tender or exchange
          offer made directly to the Corporation's stockholders; or

               b. there is a change in the composition of the Board over a
          period of thirty-six (36) consecutive months or less such that a
          majority of the Board members ceases, by reason of one or more proxy
          contests for the election of Board members, to be comprised of
          individuals who either (A) have been Board members continuously since
          the beginning of such period or (B) have been elected or nominated for
          election as Board members during such period by at least a majority of
          the Board members described in clause (A) who were still in office at
          the time such election or nomination was approved by the Board.

          CORPORATE TRANSACTION: any of the following stockholder-approved
transactions to which the Corporation is a party:

               a. a merger or consolidation in which the Corporation is not the
          surviving entity, except for a transaction the principal purpose of
          which is to change the State in which the Corporation is incorporated,

               b. the sale, transfer or other disposition of all or
          substantially all of the assets of the Corporation in complete
          liquidation or dissolution of the Corporation, or

               c. any reverse merger in which the Corporation is the surviving
          entity but in which securities possessing more than fifty percent
          (50%) of the total combined voting power of the Corporation's
          outstanding securities are transferred to a person or persons
          different from those who held such securities immediately prior to
          such merger.

          EMPLOYEE: an individual who performs services while in the employ of
the Corporation or one or more parent or subsidiary corporations, subject to the
control and direction of the employer entity not only as to the work to be
performed but also as to the manner and method of performance.

          FAIR MARKET VALUE: the fair market value per share of Common Stock
determined in accordance with the following provisions:

               a. If the Common Stock is not at the time listed or admitted to
          trading on any national stock exchange but is traded on the Nasdaq
          National Market, the Fair Market Value shall be the closing price per
          share on the date in question, as such price is reported by the
          National Association of Securities Dealers on the Nasdaq National
          Market and published in THE WALL STREET JOURNAL. If there is no
          reported closing price for the Common Stock on the date in question,
          then the closing price on the last preceding date for which such
          quotation exists shall be determinative of Fair Market Value.

               b. If the Common Stock is at the time listed or admitted to
          trading on any national stock exchange, then the Fair Market Value
          shall be the closing price per share on the date in question on the
          exchange determined by the Plan Administrator to be the primary market
          for the Common Stock, as such price is officially quoted in the
          composite tape of transactions on such exchange and published in THE
          WALL STREET JOURNAL. If there is no reported sale of Common Stock on
          such exchange on the date in question, then the Fair Market Value
          shall be the closing price on the exchange on the last preceding date
          for which such quotation exists.



                                       2.
<PAGE>


          FIRST TRADING DAY: the first trading day of each fiscal year of the
Corporation.

          HOSTILE TAKE-OVER: a change in ownership of the Corporation effected
through a transaction in which any person or related group of persons (other
than the Corporation or a person that directly or indirectly controls, is
controlled by, or is under common control with, the Corporation) directly or
indirectly acquires beneficial ownership (within the meaning of Rule 13d-3 of
the 1934 Act) of securities possessing more than fifty percent (50%) of the
total combined voting power of the Corporation's outstanding securities pursuant
to a tender or exchange offer made directly to the Corporation's stockholders
which the Board does not recommend such stockholders to accept.

          1934 ACT: the Securities Exchange Act of 1934, as amended from time to
time.

          OPTIONEE: any person to whom an option is granted under either the
Discretionary Option Grant or Automatic Option Grant Program in effect under the
Plan.

          PLAN ADMINISTRATOR: the Committee in its capacity as the administrator
of the Plan.

          PERMANENT DISABILITY OR PERMANENTLY DISABLED: the inability of the
Optionee to engage in any substantial gainful activity by reason of any
medically determinable physical or mental impairment expected to result in death
or to be of continuous duration of twelve (12) months or more.

          SERVICE: the performance of services on a periodic basis to the
Corporation (or any parent or subsidiary corporation) in the capacity of an
Employee, a non-employee member of the board of directors or a consultant or
advisor, except to the extent otherwise specifically provided in the applicable
stock option agreement.

          TAKE-OVER PRICE: the GREATER of (a) the Fair Market Value per share of
Common Stock on the date the option is surrendered to the Corporation in
connection with a Hostile Take-Over or (b) the highest reported price per share
of Common Stock paid by the tender offeror in effecting such Hostile Take-Over.
However, if the surrendered option is an incentive stock option under the
Federal tax laws, the Take-Over Price shall not exceed the clause (a) price per
share.

          B. The following provisions shall be applicable in determining the
parent and subsidiary corporations of the Corporation:

               Any corporation (other than the Corporation) in an unbroken chain
          of corporations ending with the Corporation shall be considered to be
          a PARENT of the Corporation, provided each such corporation in the
          unbroken chain (other than the Corporation) owns, at the time of the
          determination, stock possessing fifty percent (50%) or more of the
          total combined voting power of all classes of stock in one of the
          other corporations in such chain.

               Each corporation (other than the Corporation) in an unbroken
          chain of corporations beginning with the Corporation shall be
          considered to be a SUBSIDIARY of the Corporation, provided each such
          corporation (other than the last corporation) in the unbroken chain
          owns, at the time of the determination, stock possessing fifty percent
          (50%) or more of the total combined voting power of all classes of
          stock in one of the other corporations in such chain.



                                       3.
<PAGE>

III.      STRUCTURE OF THE PLAN

          A. STOCK PROGRAMS. The Plan shall be divided into two separate
components: the Discretionary Option Grant Program specified in Article Two and
the Automatic Option Grant Program specified in Article Three. Under the
Discretionary Option Grant Program, eligible individuals may, at the discretion
of the Plan Administrator, be granted options to purchase shares of Common Stock
in accordance with the provisions of Article Two. Under the Automatic Option
Grant Program, non-employee members of the Corporation's Board of Directors (the
"Board") will receive periodic option grants to purchase shares of Common Stock
in accordance with the provisions of Article Three.

          B. GENERAL PROVISIONS. Unless the context clearly indicates otherwise,
the provisions of Articles One and Four shall apply to the Discretionary Option
Grant Program and the Automatic Option Grant Program and shall accordingly
govern the interests of all individuals under the Plan.

IV.       ADMINISTRATION OF THE PLAN

          A. The Discretionary Option Grant Program shall be administered by the
Committee. Members of the Committee shall serve for such period of time as the
Board may determine and shall be subject to removal by the Board at any time.

          B. The Committee as Plan Administrator shall have full power and
authority (subject to the express provisions of the Plan) to establish rules and
regulations for the proper administration of the Discretionary Option Grant
Program and to make such determinations under, and issue such interpretations
of, the provisions of such program and any outstanding option grants thereunder
as it may deem necessary or advisable. Decisions of the Plan Administrator shall
be final and binding on all parties who have an interest in the Discretionary
Option Grant Program or any outstanding option thereunder.

          C. Administration of the Automatic Option Grant Program shall be
self-executing in accordance with the express terms and conditions of Article
Three, and the Committee as Plan Administrator shall exercise no discretionary
functions with respect to option grants made pursuant to that program.

V.        OPTION GRANTS

          A. The persons eligible to participate in the Discretionary Option
Grant Program under Article Two are as follows:

               (i) officers and other key employees of the Corporation (or its
          parent or subsidiary corporations) who render services which
          contribute to the management, growth and financial success of the
          Corporation (or its parent or subsidiary corporations);

               (ii) non-employee Board members; and

               (iii) those consultants who provide valuable services to the
          Corporation (or its parent or subsidiary corporations).

          B. The Plan Administrator shall have full authority to determine, with
respect to the option grants made under the Plan, which eligible individuals are
to receive option grants, the number of shares to be covered by each such grant,
the status of the granted option as either an incentive stock option ("Incentive
Option") which satisfies the requirements of Code Section 422 or a non-statutory
option not intended to meet such requirements, the time or times at which each
granted option is to become exercisable and the maximum term for which the
option may remain outstanding.



                                       4.
<PAGE>


VI.       STOCK SUBJECT TO THE PLAN

          A. Shares of Common Stock shall be available for issuance under the
Plan and shall be drawn from either the Corporation's authorized but unissued
shares of Common Stock or from reacquired shares of Common Stock, including
shares repurchased by the Corporation on the open market. The maximum number of
shares of Common Stock that may be issued over the term of the Plan shall not
exceed 6,969,119 shares, subject to adjustment from time to time in accordance
with the provisions of this Section VI.

          Such authorized share reserve reflects the 3-for-2 split of the
Corporation's outstanding Common Stock effected June 5, 1995 and the 1-for-3
reverse stock split of the Corporation's outstanding Common Stock effected
October 7, 1993, and is comprised of the following:

               (i) the number of shares which remained available for issuance,
          as of the Effective Date of the Discretionary Option Grant Program,
          under the 1984 Plan as last approved by the Corporation's
          stockholders, including the shares subject to the outstanding options
          incorporated into this Plan and any other shares which would have been
          available for future option grant under the 1984 Plan as last approved
          by the stockholders (estimated to be 1,931,757 shares in the aggregate
          on a post-split basis);

               (ii) 143,244 shares (on a post-split basis) subject to options
          outstanding under the ASIX Plan as of the Effective Date and
          incorporated into this Plan;

               (iii) an additional 300,000 share increase (on a post-split
          basis) authorized by the Board under this Plan and approved by the
          stockholders prior to the Effective Date;

               (iv) an additional 750,000-share increase (on a post-split basis)
          authorized by the Board on January 23, 1995 and approved by the
          stockholders at the 1995 Annual Stockholders Meeting;

               (v) an additional 500,000-share increase authorized by the Board
          on January 26, 1996 and approved by the Corporation's stockholders at
          the 1996 Annual Stockholders Meeting;

               (vi) an additional 500,000-share increase authorized by the Board
          on February 12, 1997 and approved by the stockholders at the 1997
          Annual Stockholders Meeting;

               (vii) an additional 500,000-share increase authorized by the
          Board on February 13, 1998 and approved by the stockholders at the
          1998 Annual Stockholders Meeting;

               (viii) an additional 407,818-share increase effected October 31,
          1998 pursuant to the automatic share increase provisions of Section
          VI.C. of this Article One;

               (ix) an additional 1,000,000-share increase authorized by the
          Board on January 22, 1999 and approved by the stockholders at the 1999
          Annual Meeting; and

               (x) an additional 436,300-share increase effected October 31,
          1999 pursuant to the automatic share increase provisions of Section
          VI.C. of this Article One.

               (xi) an additional increase of 500,000 shares authorized by the
Board on February 9, 2000, subject to stockholder approval at the 2000 Annual
Meeting.

          B. To the extent one or more outstanding options under the Predecessor
Plans which have been incorporated into this Plan are subsequently exercised,
the number of shares issued with respect to each such option shall reduce, on a
share-for-share basis, the number of shares available for issuance under this
Plan.



                                       5.
<PAGE>


          C. The number of shares of Common Stock reserved for issuance under
this Plan will automatically be increased on the First Trading Day of each
fiscal year over the remaining term of the Plan, beginning with the November 1,
2000 First Trading Day, by an amount equal to three and one-half percent (3.5%)
of the total number of shares of Common Stock outstanding on the last trading
day of the immediately preceding fiscal year, but in no event shall any such
annual increase exceed 1,500,000 shares.

          D. No one person participating in the Plan may receive options and
separately exercisable stock appreciation rights for more than 1,000,000 shares
(on a post-split basis) of Common Stock in the aggregate over the remaining term
of the Plan, subject to adjustment from time to time in accordance with the
provisions of this Section VI. For purposes of such limitation, no stock options
or stock appreciation rights granted prior to January 1, 1995 shall be taken
into account. The 250,000-share increase to such limit adopted by the Board on
January 22, 1999 was approved by the stockholders at the 1999 Annual Meeting.

          E. Should one or more outstanding options under this Plan (including
outstanding options under the Predecessor Plans incorporated into this Plan)
expire or terminate for any reason prior to exercise in full (including any
option cancelled in accordance with the cancellation-regrant provisions of
Section IV of Article Two), then the shares subject to the portion of each
option not so exercised shall be available for subsequent option grants under
the Plan. Unvested shares issued under the Plan and subsequently repurchased by
the Corporation, at the original exercise price paid per share, pursuant to the
Corporation's repurchase rights under the Plan shall be added back to the number
of shares of Common Stock reserved for issuance under the Plan and shall
accordingly be available for reissuance through one or more subsequent option
grants under the Plan. However, shares subject to any option or portion thereof
surrendered in accordance with Section V of Article Two or Section III of
Article Three shall reduce on a share-for-share basis the number of shares of
Common Stock available for subsequent option grants under the Plan. Should the
option price of an outstanding option under the Plan (including any option
incorporated from the Predecessor Plans) be paid with shares of Common Stock or
should shares of Common Stock otherwise issuable under the Plan be withheld by
the Corporation in satisfaction of the withholding taxes incurred in connection
with the exercise of an outstanding stock option under the Plan, then the number
of shares of Common Stock available for issuance under the Plan shall be reduced
by the gross number of shares for which the option is exercised or which vest
under the stock issuance, and not by the net number of shares of Common Stock
actually issued.

          F. Should any change be made to the Common Stock issuable under the
Plan by reason of any stock split, stock dividend, recapitalization, combination
of shares, exchange of shares or other change affecting the outstanding Common
Stock as a class without the Corporation's receipt of consideration, then
appropriate adjustments shall be made to (i) the maximum number and/or class of
securities issuable under the Plan, (ii) the maximum number and/or class of
securities by which the share reserve is to increase automatically on the First
Trading of each fiscal year pursuant to the provisions of Section VI.C of this
Article One, (iii) the maximum number and/or class of securities for which any
one person may be granted options and separately exercisable stock appreciation
rights under the Plan from and after January 1, 1995, (iv) the number and/or
class of securities for which automatic option grants are to be subsequently
made per newly-elected or continuing non-employee Board member under the
Automatic Option Grant Program, (v) the number and/or class of securities and
price per share in effect under each option outstanding under either the
Discretionary Option Grant or Automatic Option Grant Program and (vi) the number
and/or class of securities and price per share in effect under each outstanding
option incorporated into this Plan from the Predecessor Plans. Such adjustments
to the outstanding options are to be effected in a manner which shall preclude
the enlargement or dilution of rights and benefits under such options. The
adjustments determined by the Plan Administrator shall be final, binding and
conclusive.




                                       6.
<PAGE>


                                  ARTICLE TWO
                       DISCRETIONARY OPTION GRANT PROGRAM

I.        TERMS AND CONDITIONS OF OPTIONS

          Options granted pursuant to the Discretionary Option Grant Program
shall be authorized by action of the Plan Administrator and may, at the Plan
Administrator's discretion, be either Incentive Options or non-statutory
options. Individuals who are not Employees of the Corporation or its parent or
subsidiary corporations may only be granted non-statutory options. Each granted
option shall be evidenced by one or more instruments in the form approved by the
Plan Administrator; PROVIDED, however, that each such instrument shall comply
with the terms and conditions specified below. Each instrument evidencing an
Incentive Option shall, in addition, be subject to the applicable provisions of
Section II of this Article Two.

       A. OPTION PRICE.

          (1) The option price per share shall be fixed by the Plan
Administrator but shall not be less than one hundred percent (100%) of the Fair
Market Value per share of Common Stock on the option grant date.

          (2) The option price shall become immediately due upon exercise of the
option and, subject to the provisions of Section I of Article Four and the
instrument evidencing the grant, shall be payable in one of the following
alternative forms specified below:

               - full payment in shares of Common Stock held for the requisite
          period necessary to avoid a charge to the Corporation's earnings for
          financial reporting purposes and valued at Fair Market Value on the
          Exercise Date (as such term is defined below);

               - full payment in cash or check drawn to the Corporation's order;

               - full payment in a combination of shares of Common Stock held
          for the requisite period necessary to avoid a charge to the
          Corporation's earnings for financial reporting purposes and valued at
          Fair Market Value on the Exercise Date and cash or check drawn to the
          Corporation's order; or

               - full payment through a broker-dealer sale and remittance
          procedure pursuant to which the Optionee (I) shall provide irrevocable
          instructions to a designated brokerage firm to effect the immediate
          sale of the purchased shares and remit to the Corporation, out of the
          sale proceeds available on the settlement date, sufficient funds to
          cover the aggregate option price payable for the purchased shares plus
          all applicable Federal and State income and employment taxes required
          to be withheld by the Corporation in connection with such purchase and
          (II) shall provide directives to the Corporation to deliver the
          certificates for the purchased shares directly to such brokerage firm
          in order to complete the sale transaction.

          For purposes of this subparagraph (2), the Exercise Date shall be the
date on which the notice of the option exercise is delivered to the Corporation.
Except to the extent the sale and remittance procedure is utilized in connection
with the exercise of the option, payment of the option price for the purchased
shares must accompany such notice.

          B. TERM AND EXERCISE OF OPTIONS. Each option granted under this
Discretionary Option Grant Program shall be exercisable at such time or times
and during such period as is determined by the Plan Administrator and set forth
in the instrument evidencing the grant. No such option, however, shall have a
maximum term in excess of ten (10) years from the grant date.



                                       7.
<PAGE>


          C. LIMITED TRANSFERABILITY OF OPTIONS. During the lifetime of the
Optionee, Incentive Options shall be exercisable only by the Optionee and shall
not be assignable or transferable other than by will or by the laws of
inheritance following the Optionee's death. Non-Statutory Options shall be
subject to the same restriction, except that a Non-Statutory Option may be
assigned in whole or in part during the Optionee's lifetime to one or more
members of the Optionee's family or to a trust established exclusively for one
or more such family members or to Optionee's former spouse, to the extent such
assignment is in connection with the Optionee's estate plan or pursuant to a
domestic relations order. The assigned portion may only be exercised by the
person or persons who acquire a proprietary interest in the option pursuant to
the assignment. The terms applicable to the assigned portion shall be the same
as those in effect for the option immediately prior to such assignment and shall
be set forth in such documents issued to the assignee as the Plan Administrator
may deem appropriate. Notwithstanding the foregoing, the Optionee may also
designate one or more persons as the beneficiary or beneficiaries of his or her
outstanding options under this Article Two, and those options shall, in
accordance with such designation, automatically be transferred to such
beneficiary or beneficiaries upon the Optionee's death while holding those
options. Such beneficiary or beneficiaries shall take the transferred options
subject to all the terms and conditions of the applicable agreement evidencing
each such transferred option, including (without limitation) the limited time
period during which the option may be exercised following the Optionee's death.

          D. TERMINATION OF SERVICE.

          (1) The following provisions shall govern the exercise period
applicable to any outstanding options held by the Optionee at the time of
cessation of Service or death.

               - Should an Optionee cease Service for any reason (including
          death or Permanent Disability) while holding one or more outstanding
          options under this Article Two, then none of those options shall
          (except to the extent otherwise provided pursuant to subparagraph
          C.(3) below) remain exercisable for more than a thirty-six (36)-month
          period (or such shorter period determined by the Plan Administrator
          and set forth in the instrument evidencing the grant) measured from
          the date of such cessation of Service.

               - Any option held by the Optionee under this Article Two and
          exercisable in whole or in part on the date of his or her death may be
          subsequently exercised by the personal representative of the
          Optionee's estate or by the person or persons to whom the option is
          transferred pursuant to the Optionee's will or in accordance with the
          laws of descent and distribution. Such exercise, however, must occur
          prior to the EARLIER of (i) the third anniversary of the date of the
          Optionee's death (or such shorter period determined by the
          Plan Administrator and set forth in the instrument evidencing the
          grant) or (ii) the specified expiration date of the option term. Upon
          the occurrence of the earlier event, the option shall terminate and
          cease to be outstanding.

               - During the applicable post-Service period, the option may not
          be exercised in the aggregate for more than the number of shares (if
          any) in which the Optionee is vested at the time of cessation of
          Service. Upon the expiration of the limited post-Service exercise
          period or (if earlier) upon the specified expiration date of the
          option term, each such option shall terminate and cease to be
          outstanding with respect to any vested shares for which it has not
          otherwise been exercised. However, each outstanding option shall
          immediately terminate and cease to be outstanding, at the time of the
          Optionee's cessation of Service, with respect to any shares for which
          it is not otherwise at that time exercisable or in which Optionee is
          not otherwise at that time vested.

               - Under no circumstances, however, shall any such option be
          exercisable after the specified expiration date of the option term.



                                       8.
<PAGE>


               - Should (i) the Optionee's Service be terminated for misconduct
          (including, but not limited to, any act of dishonesty, willful
          misconduct, fraud or embezzlement) or (ii) the Optionee make any
          unauthorized use or disclosure of confidential information or trade
          secrets of the Corporation or its parent or subsidiary corporations,
          then in any such event all outstanding options held by the Optionee
          under this Article Two shall terminate immediately and cease to be
          outstanding.

          (2) The Plan Administrator shall have complete discretion, exercisable
either at the time the option is granted or at any time while the option remains
outstanding, to permit one or more options held by the Optionee under this
Article Two to be exercised, during the limited post-Service exercise period
applicable under subparagraph (1) above, not only with respect to the number of
vested shares of Common Stock for which each such option is exercisable at the
time of the Optionee's cessation of Service but also with respect to one or more
subsequent installments of vested shares for which the option would otherwise
have become exercisable had such cessation of Service not occurred.

          (3) The Plan Administrator shall also have full power and authority to
extend the period of time for which the option is to remain exercisable
following the Optionee's cessation of Service or death from the limited period
in effect under subparagraph (1) above to such greater period of time as the
Plan Administrator shall deem appropriate. In no event, however, shall such
option be exercisable after the specified expiration date of the option term.

          E. STOCKHOLDER RIGHTS. An Optionee shall have no stockholder rights
with respect to any shares covered by the option until such individual shall
have exercised the option and paid the option price for the purchased shares.

          F. REPURCHASE RIGHTS. The shares of Common Stock acquired upon the
exercise of any Article Two option grant may be subject to repurchase by the
Corporation in accordance with the following provisions:

               a. The Plan Administrator shall have the discretion to authorize
          the issuance of unvested shares of Common Stock under this Article
          Two. Should the Optionee cease Service while holding such unvested
          shares, the Corporation shall have the right to repurchase any or all
          of those unvested shares at the option price paid per share. The terms
          and conditions upon which such repurchase right shall be exercisable
          (including the period and procedure for exercise and the appropriate
          vesting schedule for the purchased shares) shall be established by the
          Plan Administrator and set forth in the instrument evidencing such
          repurchase right.

               b. All of the Corporation's outstanding repurchase rights under
          this Article Two shall automatically terminate, and all shares subject
          to such terminated rights shall immediately vest in full, upon the
          occurrence of a Corporate Transaction, except to the extent: (i) any
          such repurchase right is expressly assigned to the successor
          corporation (or parent thereof) in connection with the Corporate
          Transaction or (ii) such accelerated vesting is precluded by other
          limitations imposed by the Plan Administrator at the time the
          repurchase right is issued.

               c. The Plan Administrator shall have the discretionary authority,
          exercisable either before or after the Optionee's cessation of
          Service, to cancel the Corporation's outstanding repurchase rights
          with respect to one or more shares purchased or purchasable by the
          Optionee under this Discretionary Option Grant Program and thereby
          accelerate the vesting of such shares in whole or in part at any time.





                                       9.
<PAGE>


II.       INCENTIVE OPTIONS

          The terms and conditions specified below shall be applicable to all
Incentive Options granted under this Article Two. Incentive Options may only be
granted to individuals who are Employees of the Corporation. Options which are
specifically designated as "non-statutory" options when issued under the Plan
shall NOT be subject to such terms and conditions.

          A. DOLLAR LIMITATION. The aggregate Fair Market Value (determined as
of the respective date or dates of grant) of the Common Stock for which one or
more options granted under this Plan (or any other option plan of the
Corporation or its parent or subsidiary corporations) may for the first time
become exercisable as incentive stock options under the Federal tax laws during
any one calendar year shall not exceed the sum of One Hundred Thousand Dollars
($100,000). To the extent the Employee holds two (2) or more such options which
become exercisable for the first time in the same calendar year, the foregoing
limitation on the exercisability of such options as incentive stock options
under the Federal tax laws shall be applied on the basis of the order in which
such options are granted. Should the number of shares of Common Stock for which
any Incentive Option first becomes exercisable in any calendar year exceed the
applicable One Hundred Thousand Dollar ($100,000) limitation, then that option
may nevertheless be exercised in that calendar year for the excess number of
shares as a non-statutory option under the Federal tax laws.

          B. 10% STOCKHOLDER. If any individual to whom an Incentive Option is
granted is the owner of stock (as determined under Section 424(d) of the
Internal Revenue Code) possessing ten percent (10%) or more of the total
combined voting power of all classes of stock of the Corporation or any one of
its parent or subsidiary corporations, then the option price per share shall not
be less than one hundred and ten percent (110%) of the Fair Market Value per
share of Common Stock on the grant date, and the option term shall not exceed
five (5) years, measured from the grant date.

          Except as modified by the preceding provisions of this Section II, the
provisions of Articles One, Two and Four of the Plan shall apply to all
Incentive Options granted hereunder.

III.      CORPORATE TRANSACTIONS/CHANGES IN CONTROL

          A. In the event of any Corporate Transaction, each option which is at
the time outstanding under this Article Two shall automatically accelerate so
that each such option shall, immediately prior to the specified effective date
for the Corporate Transaction, become fully exercisable with respect to the
total number of shares of Common Stock at the time subject to such option and
may be exercised for all or any portion of such shares. However, an outstanding
option under this Article Two shall NOT so accelerate if and to the extent: (i)
such option is, in connection with the Corporate Transaction, either to be
assumed by the successor corporation or parent thereof or to be replaced with a
comparable option to purchase shares of the capital stock of the successor
corporation or parent thereof, (ii) such option is to be replaced with a cash
incentive program of the successor corporation which preserves the option spread
existing at the time of the Corporate Transaction and provides for subsequent
payout in accordance with the same vesting schedule applicable to such option,
or (iii) the acceleration of such option is subject to other limitations imposed
by the Plan Administrator at the time of the option grant. The determination of
option comparability under clause (i) above shall be made by the Plan
Administrator, and its determination shall be final, binding and conclusive.

          B. Upon the consummation of the Corporate Transaction, all outstanding
options under this Article Two shall terminate and cease to be outstanding,
except to the extent assumed by the successor corporation or its parent company.

          C. Each outstanding option under this Article Two which is assumed in
connection with the Corporate Transaction or is otherwise to continue in effect
shall be appropriately adjusted, immediately after such Corporate Transaction,
to apply and pertain to the number and class of securities which would have been
issued to the option holder, in consummation of such Corporate Transaction, had
such person exercised the option




                                      10.
<PAGE>


immediately prior to such Corporate Transaction. Appropriate adjustments
shall also be made to the option price payable per share, PROVIDED
the aggregate option price payable for such securities shall remain the same. In
addition, appropriate adjustments shall be made to (i) the class and number of
securities available for issuance under the Plan following the consummation of
the Corporate Transaction, (ii) the maximum number and/or class of securities
for which any one person may be granted stock options, separately exercisable
stock appreciation rights and direct stock issuances under the Plan per calendar
year and (iii) the maximum number and/or class of securities by which the share
reserve is to increase automatically on the First Trading Day of each fiscal
year. To the extent the actual holders of the Corporation's outstanding Common
Stock receive cash consideration for their Common Stock in consummation of the
Corporate Transaction, the successor corporation may, in connection with the
assumption of the outstanding options under the Discretionary Option Grant
Program, substitute one or more shares of its own common stock with a fair
market value equivalent to the cash consideration paid per share of Common Stock
in such Corporate Transaction..

          D. The Plan Administrator shall have the discretion, exercisable
either at the time the option is granted or at any time while the option remains
outstanding, to provide (upon such terms as it may deem appropriate) for the
automatic acceleration of one or more outstanding options under this Article Two
which are assumed or replaced in the Corporate Transaction and do not otherwise
accelerate at that time, in the event the Optionee's Service should subsequently
terminate within a designated period following the effective date of such
Corporate Transaction.

          E. The grant of options under this Article Two shall in no way affect
the right of the Corporation to adjust, reclassify, reorganize or otherwise
change its capital or business structure or to merge, consolidate, dissolve,
liquidate or sell or transfer all or any part of its business or assets.

          F. The Plan Administrator shall have the discretionary authority,
exercisable either at the time the option is granted or at any time while the
option is outstanding, to provide for the automatic acceleration of one or more
outstanding options under this Article Two (and the termination of one or more
of the Corporation's outstanding repurchase rights under this Article Two) upon
the occurrence of the Change in Control. The Plan Administrator shall also have
full power and authority to condition any such option acceleration (and the
termination of any outstanding repurchase rights) upon the subsequent
termination of the Optionee's Service within a specified period following the
Change in Control.

          G. Any options accelerated in connection with the Change in Control
shall remain fully exercisable until the expiration or sooner termination of the
option term.

          H. Any Incentive Options accelerated under this Section III in
connection with a Corporate Transaction or Change in Control shall remain
exercisable as incentive stock options under the Federal tax laws only to the
extent the applicable dollar limitation of Section II of this Article Two is not
exceeded. To the extent such dollar limitation is exceeded, the accelerated
option shall be exercisable as a non-statutory option under the Federal tax
laws.

IV.       CANCELLATION AND REGRANT OF OPTIONS

          The Plan Administrator shall have the authority to effect, at any time
and from time to time, with the consent of the affected optionees, the
cancellation of any or all outstanding options under this Article Two (including
outstanding options under the Predecessor Plans incorporated into this Plan) and
to grant in substitution new options under the Plan covering the same or
different numbers of shares of Common Stock but with an option price per share
not less than one hundred percent (100%) of the Fair Market Value of the Common
Stock on the new grant.




                                      11.
<PAGE>


V.        STOCK APPRECIATION RIGHTS

          A. Provided and only if the Plan Administrator determines in its
discretion to implement the stock appreciation right provisions of this Section
V, one or more Optionees may be granted the right, exercisable upon such terms
and conditions as the Plan Administrator may establish, to surrender all or part
of an unexercised option under this Article Two in exchange for a distribution
from the Corporation in an amount equal to the excess of (i) the Fair Market
Value (on the option surrender date) of the shares of Common Stock in which the
Optionee is at the time vested under the surrendered option (or surrendered
portion thereof) over (ii) the aggregate option price payable for such vested
shares.

          B. No surrender of an option shall be effective hereunder unless it is
approved by the Plan Administrator. If the surrender is so approved, then the
distribution to which the Optionee shall accordingly become entitled under this
Section V may be made in shares of Common Stock valued at Fair Market Value on
the option surrender date, in cash, or partly in shares and partly in cash, as
the Plan Administrator deems appropriate.

          C. If the surrender of an option is rejected by the Plan
Administrator, then the Optionee shall retain whatever rights the Optionee had
under the surrendered option (or surrendered portion thereof) on the option
surrender date and may exercise such rights at any time prior to the LATER of
(i) five (5) business days after the receipt of the rejection notice or (ii) the
last day on which the option is otherwise exercisable in accordance with the
terms of the instrument evidencing such option, but in no event may such rights
be exercised more than ten (10) years after the date of the option grant.

          D. One or more officers of the Corporation subject to the short-swing
profit restrictions of the Federal securities laws may, in the Plan
Administrator's sole discretion, be granted limited stock appreciation rights in
tandem with their outstanding options under the Plan. Upon the occurrence of a
Hostile Take-Over, the officer will have a thirty (30)-day period in which he or
she may surrender any outstanding options with such a limited stock appreciation
right to the Corporation, to the extent such options are at the time exercisable
for fully-vested shares of Common Stock. The officer shall in return be entitled
to a cash distribution from the Corporation in an amount equal to the excess of
(i) the Take-Over Price of the vested shares of Common Stock at the time subject
to each surrendered option over (ii) the aggregate option price payable for such
vested shares. The cash distribution payable upon such option surrender shall be
made within five (5) days following the consummation of the Hostile Take-Over.
The Plan Administrator shall, at the time the limited stock appreciation right
is granted, pre-approve the subsequent exercise of that right in accordance with
the terms and conditions of this Section V.D.. Accordingly, no additional
approval of the Plan Administrator or the Board shall be required at the time of
the actual option surrender and cash distribution. Any unsurrendered portion of
the option shall continue to remain outstanding and become exercisable in
accordance with the terms of the instrument evidencing such grant.

          E. The shares of Common Stock subject to any option surrendered for an
appreciation distribution pursuant to this Section V shall NOT be available for
subsequent option grant under the Plan.




                                      12.
<PAGE>


                                 ARTICLE THREE
                         AUTOMATIC OPTION GRANT PROGRAM

I.        ELIGIBILITY

          A. ELIGIBLE DIRECTORS. The individuals eligible to receive automatic
option grants pursuant to the provisions of this Article Three program shall be
limited to (i) those individuals who are first elected or appointed as
non-employee Board members on or after the Effective Date of this Automatic
Option Grant Program, whether through appointment by the Board or election by
the Corporation's stockholders, and (ii) those individuals who continue to serve
as non-employee Board members at one or more Annual Stockholders Meetings held
after such Effective Date, whether or not they commenced their Board service
prior to the Effective Date. Any non-employee Board member eligible to
participate in the Automatic Option Grant Program pursuant to the foregoing
criteria shall be designated an Eligible Director for purposes of this Plan.

II.       TERMS AND CONDITIONS OF AUTOMATIC OPTION GRANTS

          A. EFFECTIVE DATE. The terms and conditions of this Article Three
reflect the amendment to the Automatic Option Grant Program effected by the
December 8, 1999 restatement of the Plan and shall become effective upon
stockholder approval of such restatement at the 2000 Annual Meeting.
Accordingly, such stockholder approval shall also constitute approval of each
option granted under the amended Automatic Option Grant Program at or after the
date of that Annual Meeting and the subsequent exercise of that option in
accordance with the terms and conditions of this Article Three.

          B. GRANT DATES. Options shall be granted under the Automatic Option
Grant Program in accordance with the following provisions:

               (i) Each Eligible Director shall automatically be granted, at the
          time of his or her initial election or appointment as a non-employee
          Board member, a non-statutory stock option to purchase 10,000
          shares(1) of Common Stock upon the terms and conditions of this
          Article Three.

               (ii) On the date of each Annual Stockholders Meeting, beginning
          with the 2000 Annual Meeting, each individual who is to continue to
          the time as an Eligible Director shall automatically be granted,
          whether or not such individual is standing for re-election as a Board
          member at that particular meeting, a non-statutory stock option to
          purchase an additional 10,000 shares(2) of Common Stock upon the terms
          and conditions of this Article Three, provided he or she has served as
          a non-employee Board member for at least six (6) months. There shall
          be no limit on the number of 10,000-share option grants any one
          Eligible Director may receive over his or her period of Board service.

          The number of shares for which the automatic grants are to be made to
each newly-elected or continuing Eligible Director shall be subject to periodic
adjustment pursuant to the applicable provisions of Section VI.D of Article One.

          C. OPTION PRICE. For each option grant made under this Automatic
Option Grant Program, the option price per share shall be equal to one hundred
percent (100%) of the Fair Market Value per share of Common Stock on the
automatic grant date.

          D. PAYMENT. The option price shall be payable in one of the
alternative forms specified below:

- ----------------------
(1) Reflects the 3-for-2 split of the Common Stock effected by the Corporation
    on June 5, 1995.

(2) Reflects the 3-for-2 split of the Common Stock effected by the Corporation
    on June 5, 1995.


                                      13.
<PAGE>

               (i) full payment in cash or check made payable to the
          Corporation's order; or

               (ii) full payment in shares of Common Stock held for the
          requisite period necessary to avoid a charge to the Corporation's
          reported earnings and valued at Fair Market Value on the Exercise
          Date; or

               (iii) full payment in a combination of shares of Common Stock
          held for the requisite period necessary to avoid a charge to the
          Corporation's reported earnings and valued at Fair Market Value on the
          Exercise Date and cash or check payable to the Corporation's order; or

               (iv) full payment through a sale and remittance procedure
          pursuant to which the non-employee Board member (I) shall provide
          irrevocable instructions to a designated brokerage firm to effect the
          immediate sale of the purchased shares and remit to the Corporation,
          out of the sale proceeds available on the settlement date, sufficient
          funds to cover the aggregate option price payable for the purchased
          shares and shall (II) concurrently provide directives to the
          Corporation to deliver the certificates for the purchased shares
          directly to such brokerage firm in order to complete the sale
          transaction.

          The Exercise Date shall be the date on which notice of the option
exercise is delivered to the Corporation. Except to the extent the sale and
remittance procedure is utilized for the exercise of the option, payment of the
option price for the purchased shares must accompany the exercise notice.

          E. OPTION TERM. Each automatic grant under this Article Three shall
have a maximum term of ten (10) years measured from the automatic grant date.

          F. EXERCISABILITY. The initial 10,000-share automatic option grant
made to each newly-elected or appointed Board member shall become exercisable
for twelve and one-half percent (12.5%) of the option shares upon the Optionee's
completion of six (6) months of Board service measured from the automatic grant
date and shall become exercisable for the balance of the option shares in a
series of fourteen (14) equal and successive quarterly installments upon the
Optionee's completion of each additional three (3)-month period of Board service
thereafter. Each annual 10,000-share automatic option grant made to a continuing
Board member shall become exercisable in a series of four (4) equal and
successive annual installments over the Optionee's period of service on the
Board, with the first such installment to become exercisable one year after the
automatic grant date. The exercisability of each outstanding automatic grant
shall be subject to acceleration in accordance with the provisions of Section
II.G and Section III of this Article Three.

          G. LIMITED TRANSFERABILITY OF OPTIONS. Each automatic option grant may
be assigned in whole or in part during the Optionee's lifetime to one or more
members of the Optionee's family or to a trust established exclusively for one
or more such family members or to Optionee's former spouse, to the extent such
assignment is in connection with the Optionee's estate plan or pursuant to a
domestic relations order. The assigned portion may only be exercised by the
person or persons who acquire a proprietary interest in the option pursuant to
the assignment. The terms applicable to the assigned portion shall be the same
as those in effect for the option immediately prior to such assignment and shall
be set forth in such documents issued to the assignee as the Plan Administrator
may deem appropriate. Notwithstanding the foregoing, the Optionee may also
designate one or more persons as the beneficiary or beneficiaries of his or her
outstanding options under this Article Three, and those options shall, in
accordance with such designation, automatically be transferred to such
beneficiary or beneficiaries upon the Optionee's death while holding those
options. Such beneficiary or beneficiaries shall take the transferred options
subject to all the terms and conditions of the applicable agreement evidencing
each such transferred option, including (without limitation) the limited time
period during which the option may be exercised following the Optionee's death.



                                      14.
<PAGE>


H.        TERMINATION OF BOARD SERVICE.

          (1) Should the Optionee cease service as a Board member for any reason
(other than death or Permanent Disability) while holding one or more automatic
option grants under this Article Three, then such individual shall have a six
(6)-month period following the date of such cessation of Board service in which
to exercise each such option for any or all of the shares of Common Stock for
which the option is exercisable at the time of such cessation of Board service.
Each such option shall immediately terminate and cease to be outstanding, at the
time of such cessation of Board service, with respect to any shares for which
the option is not otherwise at that time exercisable.

          (2) Should the Optionee die within six (6) months after cessation of
Board service, then each outstanding automatic option grant held by the Optionee
at the time of death may subsequently be exercised, for any or all of the shares
of Common Stock for which such option is exercisable at the time of the
Optionee's cessation of Board service (less any option shares subsequently
purchased by the Optionee prior to death), by the personal representative of the
Optionee's estate or by the person or persons to whom the option is transferred
pursuant to the Optionee's will or in accordance with the laws of descent and
distribution. Any such exercise must occur within twelve (12) months after the
date of the Optionee's death.

          (3) Should the Optionee die or become permanently disabled while
serving as a Board member, then each automatic option grant held by such
Optionee under this Article Three shall accelerate in full, and the Optionee (or
the representative of the Optionee's estate or the person or persons to whom the
option is transferred upon the Optionee's death) shall have a twelve (12)-month
period following the date of the Optionee's cessation of Board service in which
to exercise each such option for any or all of the shares of Common Stock
subject to that option at the time of such cessation of Board service.

          (4) In no event shall any automatic grant under this Article Three
remain exercisable after the specified expiration date of the ten (10)-year
option term. Upon the expiration of the applicable post-service exercise period
under subparagraph 1, 2 or 3 above or (if earlier) upon the expiration of the
ten (10)-year option term, the automatic grant shall terminate and cease to be
outstanding for any unexercised shares for which the option was otherwise
exercisable at the time of the Optionee's cessation of Board service.

I.       STOCKHOLDER RIGHTS. The holder of an automatic option grant under
this Article Three shall have none of the rights of a stockholder with respect
to any shares subject to such option until such individual shall have exercised
the option and paid the option price for the purchased shares.

J.       REMAINING TERMS. The remaining terms of each option granted under
the Automatic Option Grant Program shall be the same as the terms in effect for
option grants made under the Discretionary Option Grant Program.

III.     CORPORATE TRANSACTION/CHANGE IN CONTROL/HOSTILE TAKE-OVER

          A. In the event of any Corporate Transaction, each automatic option
grant at the time outstanding under this Article Three shall automatically
accelerate so that each such option shall, immediately prior to the specified
effective date for the Corporate Transaction, become fully exercisable with
respect to the total number of shares of Common Stock at the time subject to
such option and may be exercised for all or any portion of such shares. Upon the
consummation of the Corporate Transaction, all automatic option grants under
this Article Three shall terminate and cease to be outstanding.

          B. In connection with any Change in Control of the Corporation, each
automatic option grant at the time outstanding under this Article Three shall
automatically accelerate so that each such option shall, immediately prior to
the specified effective date for the Change in Control, become fully exercisable
with respect to the total number of shares of Common Stock at the time subject
to such option and may be exercised for all or any portion of such shares.


                                      15.
<PAGE>

          C. Upon the occurrence of a Hostile Take-Over, the Optionee shall have
a thirty (30)-day period in which to surrender each option held by him or her
under this Article Three to the Corporation, to the extent such option has been
outstanding for a period of at least six (6) months. The Optionee shall in
return be entitled to a cash distribution from the Corporation in an amount
equal to the excess of (i) the Take-Over Price of the shares of Common Stock at
the time subject to the surrendered option (whether or not the option is
otherwise at the time exercisable for such shares) over (ii) the aggregate
option price payable for such shares. Such cash distribution shall be paid
within five (5) days following the consummation of the Hostile Take-Over.
Stockholder approval of this December 8, 1999 restatement of the Plan at the
2000 Annual Meeting shall also constitute pre-approval of each such option
surrender right granted at or after the date of that Annual Meeting and the
subsequent exercise of that right in accordance with the terms and provisions of
this Section III.C. No additional approval of any Plan Administrator or the
Board shall be required at the time of the actual option surrender and cash
distribution.

          D. The shares of Common Stock subject to each option surrendered in
connection with the Hostile Take-Over shall NOT be available for subsequent
option grant under this Plan.

          E. The automatic option grants outstanding under this Article Three
shall in no way affect the right of the Corporation to adjust, reclassify,
reorganize or otherwise change its capital or business structure or to merge,
consolidate, dissolve, liquidate or sell or transfer all or any part of its
business or assets.



                                      16.
<PAGE>


                                  ARTICLE FOUR
                                  MISCELLANEOUS

I.        LOANS OR INSTALLMENT PAYMENTS

          A. The Plan Administrator may, in its discretion, assist any Optionee
(including an Optionee who is an officer of the Corporation) in the exercise of
one or more options granted to such Optionee under the Discretionary Option
Grant Program, including the satisfaction of any Federal and State income and
employment tax obligations arising therefrom, by (i) authorizing the extension
of a loan from the Corporation to such Optionee or (ii) permitting the Optionee
to pay the option price for the purchased Common Stock in installments over a
period of years. The terms of any loan or installment method of payment
(including the interest rate and terms of repayment) shall be upon such terms as
the Plan Administrator specifies in the applicable option agreement or otherwise
deems appropriate under the circumstances. Loans or installment payments may be
authorized with or without security or collateral. However, the maximum credit
available to the Optionee may not exceed the option price of the acquired shares
plus any Federal and State income and employment tax liability incurred by the
Optionee in connection with the acquisition of such shares.

          B. The Plan Administrator may, in its absolute discretion, determine
that one or more loans extended under this financial assistance program shall be
subject to forgiveness by the Corporation in whole or in part upon such terms
and conditions as the Plan Administrator may deem appropriate.

II.       AMENDMENT OF THE PLAN AND AWARDS

          A. The Board has complete and exclusive power and authority to amend
or modify the Plan (or any component thereof) in any or all respects whatsoever.
However, no such amendment or modification shall adversely affect rights and
obligations with respect to options at the time outstanding under the Plan,
unless the Optionee consents to such amendment. In addition, certain amendments
may require stockholder approval pursuant to applicable laws or regulations.

          B. Options to purchase shares of Common Stock may be granted under the
Discretionary Option Grant Program which are in excess of the number of shares
then available for issuance under the Plan, provided any excess shares actually
issued under such program are held in escrow until stockholder approval is
obtained for a sufficient increase in the number of shares available for
issuance under the Plan. If such stockholder approval is not obtained within
twelve (12) months after the date the first such excess option grants are made,
then (i) any unexercised excess options shall terminate and cease to be
exercisable and (ii) the Corporation shall promptly refund the purchase price
paid for any excess shares actually issued under the Plan and held in escrow,
together with interest (at the applicable Short Term Federal Rate) for the
period the shares were held in escrow.

III.      TAX WITHHOLDING

          The Corporation's obligation to deliver shares of Common Stock upon
the exercise of stock options for such shares or the vesting of such shares
under the Plan shall be subject to the satisfaction of all applicable Federal,
State and local income and employment tax withholding requirements.

          The Plan Administrator may, in its discretion and in accordance with
the provisions of this Section III of Article Four and such supplemental rules
as the Plan Administrator may from time to time adopt (including the applicable
safe-harbor provisions of SEC Rule 16b-3), provide any or all holders of
non-statutory options (other than the automatic grants made pursuant to Article
Three of the Plan) or unvested shares under the Plan with the right to use
shares of the Corporation's Common Stock in satisfaction of all or part of the
Federal, State and local income and employment withholding taxes to which such
holders may become subject in connection with the exercise of their options or
the vesting of their shares (the "Withholding Taxes"). Such right may be
provided to any such holder in either or both of the following formats:




                                      17.
<PAGE>


               a. STOCK WITHHOLDING: The holder of the non-statutory option or
          unvested shares may be provided with the election to have the
          Corporation withhold, from the shares of Common Stock otherwise
          issuable upon the exercise of such non-statutory option or the vesting
          of such shares, a portion of those shares with an aggregate Fair
          Market Value equal to the percentage of the applicable Withholding
          Taxes (not to exceed one hundred percent (100%)) designated by the
          holder.

               b. STOCK DELIVERY: The Plan Administrator may, in its discretion,
          provide the holder of the non-statutory option or unvested shares
          purchased thereunder with the election to deliver to the Corporation,
          at the time the non-statutory option is exercised or the shares vest,
          one or more shares of Common Stock previously acquired by such
          individual (other than in connection with the option exercise or share
          vesting triggering the Withholding Taxes) with an aggregate Fair
          Market Value equal to the percentage of the Withholding Taxes incurred
          in connection with such option exercise or share vesting (not to
          exceed one hundred percent (100%)) designated by the holder.

IV.       EFFECTIVE DATE AND TERM OF PLAN

          A. The Plan was initially adopted by the Board on August 31, 1993 and
approved by the stockholders in October 1993. As of the applicable Effective
Date for each of the equity incentive programs in effect hereunder, this Plan,
as successor to the Predecessor Plans, became effective for each such program,
and no further option grants or stock issuances shall be made under the
Predecessor Plans from and after such Effective Date. The Plan was subsequently
amended by the Board on January 23, 1995 to (i) increase by 750,000(3) the
number of shares of Common Stock issuable under the Plan, (ii) limit the number
of shares of Common Stock for which any one participant may be granted stock
options and separately exercisable stock appreciation rights under the Plan to
750,000(3) shares, exclusive of any stock options or stock appreciation rights
granted prior to January 1, 1995 and (iii) provide that the option price per
share for all non-statutory stock options granted from and after January 1, 1995
shall not be less than one hundred percent (100%) of the Fair Market Value of
the Common Stock on the grant date. The January 23, 1995 amendment was approved
by the stockholders at the 1995 Annual Meeting held on March 27, 1995. On
January 26, 1996, the Board authorized an additional 500,000-share increase in
the number of shares of Common Stock available for issuance under the Plan and
in February 1996, the Board adopted an amendment to the Plan (the "February 1996
Amendment") which increased the number of shares of Common Stock for which
option grants are to be made annually under the Automatic Option Grant Program
to continuing non-employee Board members from 2,500 shares to 3,500 shares per
individual. Both the January 26, 1996 and February 1996 Amendments were approved
by the Corporation's stockholders at the 1996 Annual Meeting. The Plan was
subsequently amended on February 12, 1997 (the "February 1997 Amendment") to
effect the following changes: (i) increase the number of shares of Common Stock
authorized for issuance over the term of the Plan by an additional 500,000
shares, (ii) allow unvested shares issued under the Plan and subsequently
repurchased by the Corporation at the option exercise price paid per share to be
reissued under the Plan and (iii) effect a series of technical changes to the
provisions of the Plan (including stockholder approval requirements) in order to
take advantage of the recent amendments to Rule 16b-3 of the Securities Exchange
Act of 1934 which exempts certain officer and director transactions under the
Plan from the short-swing liability provisions of the federal securities laws.
The February 1997 Amendment was approved by the stockholders at the 1997 Annual
Meeting. All option grants made prior to the February 1997 Amendment shall
remain outstanding in accordance with the terms and conditions of the respective
instruments evidencing those options or issuances, and nothing in the February
1997 Amendment shall be deemed to modify or in any way affect those outstanding
options or issuances. The Plan was subsequently amended on February 13, 1998
(the "February 1998 Amendment") to effect the following changes: (i) increase
the number of shares of Common Stock authorized for issuance over the term of
the Plan by an additional 500,000 shares, and (ii) implement an automatic share
increase feature, pursuant to which the number of shares available for issuance
over the term of the Plan shall automatically increase on the first trading day
of each fiscal year, beginning with the 1999 fiscal year and continuing through
the fiscal year 2003, by an amount equal to two percent (2%) of the total number
of shares of Common Stock outstanding on the last trading day of the immediately

- -------------------
(3)  Reflects the 3-for-2 split of the Common Stock effected by the
     Corporation on June 5, 1995.



                                      18.
<PAGE>

preceding fiscal year. The February 1998 Amendment was approved by the
stockholders at the 1998 Annual Meeting. The Plan was again amended on January
22, 1999 (the "January 1999 Amendment"), subject to stockholder approval at the
1999 Annual Meeting, to (i) increase the number of shares of Common Stock
authorized for issuance over the term of the Plan by an additional 1,000,000
shares, (ii) increase the limit on the maximum number of shares of Common Stock
for which any one participant may be granted stock options and separately
exercisable stock appreciation rights after December 31, 1994 from 750,000 to
1,000,000 shares in the aggregate and (iii) increase the size of the annual
grants to non employee Board members under the Automatic Option Grant Program
from 3,500 to 5,000 shares. The January 1999 Amendment was approved by the
stockholders at the 1999 Annual Meeting. The Plan was again amended by the Board
on December 8, 1999 (the "December 1999 Amendment"), subject to stockholder
approval at the 2000 Annual Meeting, to (i) revise the automatic share increase
provisions of the Plan so that the number of shares reserved for issuance under
the Plan will automatically increase on the First Trading Day of each fiscal
year over the remaining term of the Plan, beginning with the November 1, 2000
First Trading Day, by an amount equal to three and one-half percent (3.50%) of
the total number of shares of outstanding Common Stock on the last day of the
immediately preceding fiscal year, but no such annual increase shall exceed
1,500,000 shares, (ii) increase the size of the annual grants to non employee
Board members under the Automatic Option Grant Program from 5,000 shares to
10,000 shares and (iii) extend the term of the Plan to December 31, 2004. The
Plan was further amended by the Board on February 9, 2000 (the "February 2000
Amendment") to increase the number of shares of Common Stock authorized for
issuance under the Plan by an additional 500,000 shares. No option grants will
be made on the basis of either the December 1999 Amendment or the February 2000
Amendment unless and until both the December 1999 Amendment and the February
2000 Amendment are approved by the stockholders at the 2000 Annual Meeting.
Subject to the foregoing limitations, the Plan Administrator may make option
grants under the Plan at any time before the date fixed herein for the
termination of the Plan.

          B. Each option issued and outstanding under the Predecessor Plans
immediately prior to the Effective Date of the Discretionary Option Grant
Program was incorporated into this Plan and treated as an outstanding option
under this Plan, but each such option shall continue to be governed solely by
the terms and conditions of the instrument evidencing such grant, and nothing in
this Plan shall be deemed to affect or otherwise modify the rights or
obligations of the holders of such options with respect to their acquisition of
shares of Common Stock thereunder.

          C. The option/vesting acceleration provisions of Section III of
Article Two relating to Corporate Transactions and Changes in Control may, in
the Plan Administrator's discretion, be extended to one or more stock options
which are outstanding under the Predecessor Plans on the Effective Date of the
Discretionary Option Grant Program but which do not otherwise provide for such
acceleration.

          D. The Plan shall terminate upon the EARLIER of (i) December 31, 2004
or (ii) the date on which all shares available for issuance under the Plan shall
have been issued or cancelled pursuant to the exercise, surrender or cash-out of
the options granted under the Plan. However, if the December 1999 Amendment is
not approved by the stockholders at the 2000 Annual Meeting, the clause (i)
termination date will remain August 30, 2003. Upon the termination of the Plan,
all outstanding option grants shall continue to have force and effect in
accordance with the provisions of the instruments evidencing such grants.

V.        USE OF PROCEEDS

          Any cash proceeds received by the Corporation from the sale of shares
pursuant to option grants under the Plan shall be used for general corporate
purposes.

VI.       REGULATORY APPROVALS

          A. The implementation of the Plan, the granting of any stock option or
stock appreciation right under the Plan and the issuance of Common Stock upon
the exercise of the stock options or stock appreciation rights granted hereunder
shall be subject to the Corporation's procurement of all approvals and permits
required by regulatory authorities having jurisdiction over the Plan, the stock
options and stock appreciation rights granted under it, and the Common Stock
issued pursuant to it.



                                      19.
<PAGE>


          B. No shares of Common Stock or other assets shall be issued or
delivered under this Plan unless and until there shall have been compliance with
all applicable requirements of Federal and State securities laws, including the
filing and effectiveness of the Form S-8 registration statement for the shares
of Common Stock issuable under the Plan, and all applicable listing requirements
of any securities exchange on which stock of the same class is then listed.

VII.      NO EMPLOYMENT/SERVICE RIGHTS

          Neither the action of the Corporation in establishing the Plan, nor
any action taken by the Plan Administrator hereunder, nor any provision of the
Plan shall be construed so as to grant any individual the right to remain in the
employ or service of the Corporation (or any parent or subsidiary corporation)
for any period of specific duration, and the Corporation (or any parent or
subsidiary corporation retaining the services of such individual) may terminate
such individual's employment or service at any time and for any reason, with or
without cause.

VIII.     MISCELLANEOUS PROVISIONS

          A. Except to the extent otherwise expressly provided in the Plan, the
right to acquire Common Stock or other assets under the Plan may not be
assigned, encumbered or otherwise transferred by any Optionee.

          B. The provisions of the Plan relating to the exercise of options and
the vesting of shares shall be governed by the laws of the State of California
without resort to that State conflict-of-laws rules.

          C. The provisions of the Plan shall inure to the benefit of, and be
binding upon, the Corporation and its successors or assigns, whether by
Corporate Transaction or otherwise, and the Optionees, the legal representatives
of their respective estates, their respective heirs or legatees and their
permitted assignees.



                                      20.
<PAGE>


                          CREDENCE SYSTEMS CORPORATION

                                      PROXY

           ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON MARCH 22, 2000

         THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF
                          CREDENCE SYSTEMS CORPORATION

         The undersigned revokes all previous proxies, acknowledges receipt of
the Notice of the Annual Meeting of Stockholders to be held on March 22, 2000
and the Proxy Statement and appoints Graham Siddall and Dennis Wolf and each of
them, the Proxy of the undersigned, with full power of substitution, to vote all
shares of Common Stock of Credence Systems Corporation (the "Company") which the
undersigned is entitled to vote, either on his or her own behalf or on behalf of
any entity or entities, at the Annual Meeting of Stockholders of the Company to
be held at the Company's headquarters at 215 Fourier Avenue, Fremont, California
94539, on Wednesday, March 22, 2000 at 10:00 a.m. local time (the "Annual
Meeting"), and at any adjournment or postponement thereof, with the same force
and effect as the undersigned might or could do if personally present thereat.
The shares represented by this Proxy shall be voted in the manner set forth on
the reverse side.

         1.       To elect the following two directors to serve for a three-year
                  term ending upon the year 2003 Annual Meeting of stockholders
                  or until their successors are elected and qualified:


                                                                 WITHHOLD
                                                                AUTHORITY
                                               FOR               TO VOTE

              Henk J. Evenhuis
                                              -----               -----
              Bernard V. Vonderschmitt
                                              -----               -----


         2.       FOR    AGAINST    ABSTAIN To approve an amendment to the
                                            Company's certificate of
                                            incorporation to increase the number
                                            of shares of Common Stock authorized
                                            for issuance thereunder by an
                                            additional 110,000,000 shares to a
                                            total of 150,000,000 shares of
                                            Common Stock.

         3.       FOR    AGAINST    ABSTAIN To approve a series of amendments to
                                            the Company's 1993 Stock Option Plan
                                            (the "1993 Plan") which will (i)
                                            increase the number of shares of
                                            Common Stock reserved for issuance
                                            under the 1993 Plan by an additional
                                            500,000 shares, (ii) revise the
                                            automatic share increase provisions
                                            so that the number of shares
                                            reserved under the 1993 Plan will
                                            automatically increase on the first
                                            trading day of each fiscal year,
                                            beginning November 1, 2000, by an
                                            amount equal to 3.5% of the total
                                            number of shares of the Company's
                                            common stock outstanding on the last
                                            day of the immediately preceding
                                            fiscal year, but no such annual
                                            increase is to exceed 1,500,000
                                            shares, (iii) increase the number of
                                            shares subject to the option grants
                                            to be made to the continuing
                                            non-employee Board members under the
                                            Automatic Option Grant Program from
                                            5,000 shares to 10,000 shares,
                                            effective as of the Annual Meeting,
                                            and (iv) extend the term of the 1993
                                            Plan from August 30, 2003 to
                                                December 31, 2004.
<PAGE>




         4.       FOR    AGAINST    ABSTAIN To approve a series of amendments to
                                            the Company's Employee Stock
                                            Purchase Plan (the "Purchase Plan")
                                            which will (i) implement an
                                            automatic share increase feature
                                            whereby the number of shares
                                            reserved under the Purchase Plan
                                            will automatically increase on the
                                            first trading day of each fiscal
                                            year, beginning November 1, 2000, by
                                            an amount equal to 0.5% of the total
                                            number of shares of the Company's
                                            common stock outstanding on the last
                                            day of the immediately preceding
                                            fiscal year, but no such annual
                                            increase is to exceed 250,000
                                            shares, (ii) revise the offering
                                            periods in effect under the Purchase
                                            Plan so that each such period may
                                            have a maximum duration of 12
                                            months, with purchases occurring at
                                            6-month intervals during the
                                            offering period on the 14th day of
                                            February and August each year, and
                                            (iii) extend the termination date of
                                            the Purchase Plan to August 14,
                                            2010.

         5.       FOR    AGAINST    ABSTAIN To ratify the appointment of Ernst &
                                            Young LLP as independent auditors of
                                            the Company for the fiscal year
                                            ending October 31, 2000.

         6.       FOR    AGAINST    ABSTAIN To transact such other business as
                                            may properly come before the Annual
                                            Meeting or any adjournment or
                                            postponement thereof.


         The Board of Directors recommends a vote FOR each of the directors
listed above and a vote FOR the other proposals. This Proxy, when properly
executed, will be voted as specified above. THIS PROXY WILL BE VOTED FOR THE
ELECTION OF THE DIRECTORS LISTED ABOVE AND FOR THE OTHER PROPOSALS IF NO
SPECIFICATION IS MADE.

         Please print the name(s) appearing
         on each share certificate(s) over
         which you have voting authority:
                                         ---------------------------------------
                                               (Print name(s) on certificate)

         Please sign your name:                          Date:
                               -------------------------      ------------------
                                (Authorized Signature)


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