PSC INC
SC 13D, 1999-12-15
COMPUTER PERIPHERAL EQUIPMENT, NEC
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                              (Amendment No. ____)*

                               PERCON INCORPORATED
                                (Name of Issuer)

                     Voting Common Stock, without par value
                         (Title of Class of Securities)

                                     71361E1
                                 (CUSIP Number)

                           Elizabeth J. McDonald, Esq.
                                 675 Basket Road
                             Webster, New York 14580

           (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                 With a copy to:
                             Patrick G. Quick, Esq.
                                 Foley & Lardner
                            777 East Wisconsin Avenue
                           Milwaukee, Wisconsin 53202

                                November 9, 1999
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
|_|.

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that Section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

<PAGE>
<TABLE>
<CAPTION>
- --------------------------------------------------------                        ----------------------------------------------
                  CUSIP No. 71361E1                                                          Page 2 of 10 Pages
- --------------------------------------------------------                        ----------------------------------------------
===== =========================================================================================================================
<S>   <C>
  1   NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      PSC Inc.  - Employer Identification No. 16-0969362
===== =========================================================================================================================
  2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                             (a)  |_|
                                                                                                                    (b)  |X|
===== =========================================================================================================================
  3   SEC USE ONLY

===== =========================================================================================================================
  4   SOURCE OF FUNDS
               OO
===== =========================================================================================================================
  5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                            |_|

===== =========================================================================================================================
  6   CITIZENSHIP OR PLACE OF ORGANIZATION
               New York, USA
===================== --------- ===============================================================================================
                          7
      NUMBER OF                  SOLE VOTING POWER
        SHARES                            100
     BENEFICIALLY
                       --------- ===============================================================================================
      OWNED BY            8
                                 SHARED VOTING POWER
        EACH
                                          1,648,647*
      REPORTING
                       --------- ===============================================================================================
       PERSON             9
                                 SOLE DISPOSITIVE POWER
        WITH
                                          100
                       --------- ===============================================================================================
                          10     SHARED DISPOSTIVIE POWER
                                          0
===== =========================================================================================================================
  11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
               1,648,747*
===== =========================================================================================================================
  12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*                                             |_|
===== =========================================================================================================================
  13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
               43.3%
===== =========================================================================================================================
  14  TYPE OF REPORTING PERSON*
               CO
===== =========================================================================================================================
</TABLE>

*PSC INC.  IS  REPORTING  BENEFICIAL  OWNERSHIP  OF THE  SHARES OF COMMON  STOCK
REPORTED FOR  CAUTIONARY  PURPOSES  SOLELY AS A RESULT OF THE VOTING  AGREEMENTS
DESCRIBED IN ITEM 3. PSC INC. EXPRESSLY DISCLAIMS  BENEFICIAL  OWNERSHIP OF SUCH
SHARES.

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
                      INCLUDE BOTH SIDES OF THE COVER PAGE,
                 RESPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF
                  THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
     Item 1. Security and Issuer

     This  Statement  relates  to the voting  Common  Stock,  without  par value
("Common Stock"), of Percon Incorporated,  a Washington corporation  ("Percon").
The address of Percon's  principal  executive  offices is 1800  Millrace  Drive,
Eugene, Oregon 97403.

Item 2. Identity and Background

     (a) This  Statement is filed on behalf of PSC Inc., a New York  corporation
("PSC").

     (b) PSC's principal business address is 675 Basket Road, Webster,  New York
14580.

     (c) PSC  designs,  manufactures  and  markets  a broad  line of  laser  and
non-laser based handheld and fixed position bar code scanners, bar code engines,
verifiers,   integrated  sortation  and  point-of-sale  scanning  and  automated
dimensioning systems for the worldwide automatic identification and data capture
market. The names, business addresses,  principal occupations and citizenship of
the directors  and  executive  officers of PSC are set forth in Annex A attached
hereto and are incorporated herein by reference.

     (d) and (e) During the last five  years,  neither  PSC nor,  to the best of
PSC's  knowledge,  any of its directors or executive  officers listed in Annex A
attached  hereto  (i) has been  convicted  in a criminal  proceeding  (excluding
traffic violations or similar misdemeanors), or (ii) has been a party to a civil
proceeding of a judicial or administrative body of competent jurisdiction and as
a result of such  proceeding  was or is subject to a  judgment,  decree or final
order  enjoining  future  violations of, or prohibiting or mandating  activities
subject  to,  federal or state  securities  laws or finding any  violation  with
respect to such laws.

     (f) Each of PSC's  directors  and  executive  officers  is a United  States
citizen,  except that Mr. Davis is a citizen of the United Kingdom, Dr. Volta is
a citizen  of Italy,  and Mr.  Ehrlich  holds dual  citizenship  with the United
States and Israel.
<PAGE>

Item 3. Source and Amount of Funds or Other Considerations

The  consideration PSC delivered in acquiring rights in substantially all of the
Common Stock to which this Statement  relates  arises out of the  following:  On
November  9,  1999,  Percon,  PSC  and  West  Acquisition  Corp.,  a  Washington
corporation  and wholly  owned  subsidiary  of PSC  ("Newco"),  entered  into an
agreement  and plan of merger (the "Merger  Agreement")  pursuant to which Newco
will be merged with and into Percon (the  "Merger") and, upon the effective time
of the  Merger,  each  issued and  outstanding  share of Common  Stock not owned
directly  or  indirectly  by PSC or Percon will be  converted  into the right to
receive  Fifteen Dollars ($15) in cash.  Concurrently  with the execution of the
Merger Agreement,  as an inducement to PSC to incur the expenses associated with
the Merger,  Michael P. Coughlin,  the Coughlin  Family Limited  Partnership (an
affiliate of Mr. Coughlin),  Arlen I. Prentice,  the Prentice Family Partnership
(an affiliate of Mr.  Prentice),  Andy J. Storment and Storment  Investments LLC
(an affiliate of Mr. Storment)  (collectively,  the "Shareholders") entered into
voting  agreements (the "Voting  Agreements") with PSC. In his or its respective
Voting  Agreement,  each Shareholder  agreed to vote all of the shares of Common
Stock that such  Shareholder  beneficially  owned  (whether  currently  owned or
subsequently  acquired) (a) in favor of the Merger and the approval and adoption
of the Merger Agreement at every meeting of shareholders of Percon at which such
matters are considered and at every adjournment or postponement  thereof and (b)
against certain transactions that would impede,  interfere with, delay, postpone
or  discourage  the Merger at every meeting of  shareholders  of Percon at which
such matters are considered and at every adjournment or postponement thereof.

If the  Merger is  consummated,  then PSC will  essentially  acquire  all of the
outstanding shares of Common Stock,  including those that are the subject of the
Voting  Agreements,  using  its  working  capital  and  through  other  sources,
including borrowings.

Item 4. Purpose of Transaction

PSC  acquired  the  rights it has in the  Common  Stock  subject  to the  Voting
Agreements to make more likely the consummation of the Merger.  If the Merger is
consummated, then PSC will own the entire equity interest in Percon.

The Merger,  which the Board of Directors of each of the  constituent  companies
approved,  is  expected to close  promptly  after all of the  conditions  to the
consummation  of the  Merger,  including  obtaining  all  applicable  regulatory
approvals, are fulfilled or waived.

Except  as set forth in this Item 4, PSC has no plans or  proposals  that  would
relate to or result in any of the events or effects  described in  subparagraphs
(a) through (j) of Item 4 of Schedule 13D of the Act prior to PSC's  acquisition
of the  entire equity interest in Percon.
<PAGE>

Item 5. Interest in Securities of the Issuer

(a)  The aggregate  number and percentage of outstanding  shares of Common Stock
to which this Statement relates is 1,648,747 shares of Common Stock representing
43.3% of the 3,807,711 shares of Common Stock that Percon  represented to PSC as
outstanding as of November 9, 1999. The Voting Agreements relate to an aggregate
of 1,648,647 of such shares or  approximately  43.3% of the  outstanding  Common
Stock. PSC expressly disclaims beneficial ownership of the Common Stock to which
the Voting Agreements relate.

To the knowledge of PSC,  none of the  directors  and executive  officers of PSC
beneficially owns any Common Stock.

Each of the following  Shareholders  has  represented in its  respective  Voting
Agreement that he or it  beneficially  owns the number of shares of Common Stock
noted as to him or it: (i) Michael P. Coughlin - 4,891 shares; (ii) the Coughlin
Family Limited  Partnership - 629,075 shares;  (iii) Arlen I. Prentice - 364,890
shares; (iv) Prentice Family Partnership - 15,500 shares; (v) Andy J. Storment -
434,291 shares; (vi) Storment Investments LLC - 200,000 shares. Such individuals
may also  beneficially own the shares of Common Stock that the entity that bears
such  individual's  name owns.  PSC  disclaims  membership  in a group with such
persons.

(b)  PSC has sole voting and dispositive power with respect to 100 shares of
Common Stock. PSC has the rights set forth in the Voting Agreements  relating to
the voting of the Common Stock to which the Voting Agreements relate. PSC has no
dispositive  power in respect of the Common Stock to which the Voting Agreements
relate.  PSC has no other information  concerning voting or dispositive power in
respect of the Common Stock to which the Voting Agreements relate.

(c)  Other than its execution of the Merger Agreement and the Voting Agreements,
PSC did not effect any  transactions in Common Stock during the past sixty days.
To the knowledge of PSC,  none of the  directors  and executive  officers of PSC
effected any transactions in Common Stock during the past sixty days. Other than
their execution of their respective  Voting  Agreements,  PSC has no information
concerning  any  transactions  in Common  Stock  during  the past  sixty days by
parties to Voting Agreements other than PSC.

(d)  Not Applicable.

(e)  Not Applicable.
<PAGE>

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to
Securities of the Issuer

Each of the  Shareholders  has  entered  into a Voting  Agreement  with PSC.  In
addition, PSC has entered into the Merger Agreement.

Item 7. Material to be Filed as Exhibits.

Exhibit 99.1 Agreement and Plan of Merger,  dated as of November 9, 1999, by and
among Inc., Percon Incorporated and West Acquisition Corp.

Exhibit 99.2 Form of Voting  Agreement  between PSC, Inc. and each of Michael P.
Coughlin,  the Coughlin  Family  Limited  Partnership,  Arlen I.  Prentice,  the
Prentice Family Partnership, Andy J. Storment and Storment Investments LLC

<PAGE>

Signature

                  After  reasonable  inquiry and to the best of my knowledge and
                  belief,  I  certify  that the  information  set  forth in this
                  Statement is true, complete and correct.

                  Date:  _______________, 1999


                 PSC Inc.

                 By:
                 Name:
                 Title:

<PAGE>

                                     ANNEX A

     Set  forth  below is the  name,  business  or  residence  address,  present
principal occupation or employment, and the name, principal business and address
of any corporation or other  organization in which such employment is conducted,
of each of the directors  and  executive  officers of PSC. Each of the directors
and executive  officers of PSC is a citizen of the United States.  If no address
is given, the director's or executive  officer's  business address is 675 Basket
Road, Webster, New York 14580. Unless otherwise  indicated,  each occupation set
forth opposite an executive officer's name refers to employment with PSC.

Name                       Present Principal Occupation or Employment & Address

Directors of PSC

Robert S. Ehrlich          Chairman of the Board PSC Inc.

Jack E. Rosenfeld          President and Chief Executive Officer, Potpourri
                           Collection,  Inc. (a consumer catalog company in
                           Medfield, Massachusetts)

Robert C. Strandberg       President and Chief Executive Officer, PSC Inc.

Dr. Romano Volta           President of the Board of Directors of Hydra S.p.A.,
                           an Italian corporation (an industrial real estate
                           holding company)

Donald K. Hess             Vice President Emeritus, University of Rochester,
                           Rochester, New York

James C. O'Shea            Chairman of the Board and Chief Executive Officer,
                           Bioject Medical  Technologies, Inc.(a medical device
                           manufacturer of needle-free injection systems in
                           Portland, Oregon)

Justin L. Vigdor           Partner, Boylan, Brown, Code, Fowler, Vigdor &
                           Wilson, LLP, (a law firm in Rochester, New York)

Dr. Jay M. Eastman         President,  Chief Executive  Officer,  Lucid, Inc.
                           (a company that designs and manufactures  custom
                           electro-optical  instrumentation  for application in
                           fields such as desktop  publishing and medical
                           diagnosis located in Rochester, New York)

Thomas J. Morgan           Director of In Touch Massage Center, Inc. (a woman's
                           fitness studio in Seal Beach, California)

Bert W. Wasserman          Director of several  investment  companies  in the
                           Dreyfus  Family of Funds,  Malibu  Entertainment
                           International, Inc., Winstar Communications, Inc.
                           and Lillian Vernon Corporation
<PAGE>

Executive Officers of PSC

Robert C. Strandberg       President and Chief Executive Officer

Charles E. Biss            Vice President, Verification

Cecil F. Bowes             Vice President , Sales - The Americas, Asia Pacific

Nigel P. Davis             Vice President, Sales - Europe, Middle East, Africa

G. William Hartman         Vice President, Automation

Dennis T. Hopwood          Vice President, Human Resources

Linda J. Miller            Senior Vice President, Marketing

William L. Parnell, Jr.    Senior Vice President, Operations

Brad R. Reddersen          Vice President, Chief Technology Officer

Matt D. Schler             Vice President, Engineering and Product Development

Michael J. Stachura        Vice President, Finance

Roger D. Tedford           Vice President, Chief Information Officer

G. Lloyd West              Senior Vice President, Worldwide Sales

William J. Woodard         Vice President, Chief Financial Officer and Treasurer
<PAGE>


                                  Schedule 13D
                                    PSC Inc.

                                  Exhibit Index


Exhibit

Exhibit 99.1   Agreement and Plan of Merger,  dated as of November 9, 1999,
by and among PSC Inc., Percon Incorporated and West Acquisition Corp.

Exhibit 99.2   Form of Voting Agreement between PSC, Inc. and each of Michael P.
Coughlin,  the Coughlin Family Limited Partnership, Arlen I. Prentice, the
Prentice Family Partnership, Andy J. Storment and Storment Investments LLC


                                               ---------------------------------
                                                          EXECUTION COPY
                                               ---------------------------------









                          AGREEMENT AND PLAN OF MERGER

                                  BY AND AMONG

                                    PSC INC.,

                             WEST ACQUISITION CORP.

                                       AND

                               PERCON INCORPORATED










                                November 9, 1999


<PAGE>


                          AGREEMENT AND PLAN OF MERGER

                                TABLE OF CONTENTS

Article 1 The Merger.........................................................1
 1.1.   The Merger...........................................................1
 1.2.   Effective Time.......................................................2
 1.3.   Effects of the Merger................................................2
 1.4.   Conversion of Percon Common Stock; Treatment of Newco Common Stock...2
 1.5.   Stock Options........................................................3
 1.6.   Warrants.............................................................4
 1.7.   Articles of Incorporation............................................4
 1.8.   By-Laws..............................................................4
 1.9.   Board of Directors of the Surviving Corporation......................4
 1.10.  Closing..............................................................4
 1.11.  Dissenters'Rights....................................................5

Article 2 PAYMENT FOR SHARES.................................................5
 2.1.   Payment for Shares...................................................5

ARTICLE 3 REPRESENTATIONS AND WARRANTIES OF Percon...........................7
 3.1.   Corporate............................................................7
 3.2.   Capitalization.......................................................8
 3.3.   Authorization........................................................8
 3.4.   No Violation.........................................................9
 3.5.   Filings with the SEC.................................................9
 3.6.   Financial Statements................................................10
 3.7.   Tax Matters.........................................................10
 3.8.   Absence of Certain Changes..........................................12
 3.9.   Undisclosed Liabilities.............................................13
 3.10.  No Litigation.......................................................13
 3.11.  Environmental Matters...............................................13
 3.12.  Title to Assets.....................................................15
 3.13.  Insurance...........................................................15
 3.14.  Material Contracts and Agreements...................................15
 3.15.  Intellectual Property...............................................16
 3.16.  Software; Protection................................................18
 3.17.  Labor Matters.......................................................19
 3.18.  ERISA Compliance....................................................20
 3.19.  Employment Compensation.............................................22
 3.20.  Percon Board of Directors Action....................................22
 3.21.  Proxy Statement.....................................................22
 3.22.  No Brokers or Finders...............................................22
 3.23.  Disclosure..........................................................23
 3.24.  Opinion of Financial Advisor........................................23
 3.25.  Year 2000 Compliance................................................23

<PAGE>

Article 4 REPRESENTATIONS AND WARRANTIES OF PSC.............................24
 4.1.   Organization........................................................24
 4.2.   Authorization.......................................................24
 4.3.   No Violation........................................................24
 4.4.   Information.........................................................25
 4.5.   Interim Operations of Newco.........................................25
 4.6.   Capital Resources...................................................25

ARTICLE 5 COVENANTS.........................................................25
 5.1.   Interim Operations..................................................25
 5.2.   Access and Information..............................................27
 5.3.   Certain Filings, Consents and Arrangements..........................28
 5.4.   State Takeover Statutes.............................................28
 5.5.   Percon Special Meeting; Proxy Statement.............................28
 5.6.   Additional Agreements...............................................29
 5.7.   Certain Litigation..................................................30
 5.8.   Acquisition Proposals...............................................30
 5.9.   Confidentiality.....................................................32
 5.10.  Indemnification; Directors'and Officers'Insurance...................32
 5.11.  Percon Warrants.....................................................33
 5.12.  Voting Agreement Matters............................................33

ARTICLE 6 Conditions to Obligation to Close.................................34
  6.1.  Conditions to Obligation of PSC and Newco...........................34
  6.2.  Conditions to Obligations of Percon.................................35

ARTICLE 7 Termination.......................................................36
 7.1.   Termination by Mutual Consent.......................................36
 7.2.   Termination by Either PSC or Percon.................................36
 7.3.   Termination by Percon...............................................36
 7.4.   Termination by PSC..................................................37
 7.5.   Effect of Termination and Abandonment...............................37

ARTICLE 8 Miscellaneous.....................................................39
 8.1.   Survival............................................................39
 8.2.   Press Releases and Public Announcements.............................39
 8.3.   No Third Party Beneficiaries........................................39
 8.4.   Entire  Agreement...................................................40
 8.5.   Succession and Assignment...........................................40
 8.6.   Counterparts........................................................40
 8.7.   Headings............................................................40
 8.8.   Notices.............................................................40
 8.9.   Governing Law.......................................................41
 8.10.  Amendments and Waivers..............................................41
 8.11.  Severability........................................................42
 8.12.  Expenses............................................................42
 8.13.  Construction........................................................42
 8.14.  Incorporation of Schedules..........................................43

<PAGE>
                             INDEX OF DEFINED TERMS

A

Agreement...........................................1
Ancillary Instruments...............................8

B

Benefit Plans......................................19
Blue Sky Laws.......................................9

C

Closing.............................................4
Closing Agreement..................................12
Closing Date........................................4
Code...............................................10
Confidentiality Agreement..........................31
Contracts...........................................8
Costs..............................................31

D

Debt Consents......................................23
Dissenting Shares...................................5

E

Effective Time......................................2
Environmental Laws.................................13
ERISA..............................................19
ERISA Affiliate....................................20
Exchange Act........................................9
Excluded Percon Acquisition Proposal...............31
Existing Liens.....................................14

G

GAAP................................................7

H

Hazardous Substance................................14
HSR Act.............................................4

I

including..........................................41
Indemnified Parties................................31
Indemnified Party..................................31

L

Laws................................................1
Liens...............................................6
Litigation.........................................13
<PAGE>

M

Material Adverse Change.............................7
Material Adverse Effect.............................7
Merger..............................................1
Merger Price........................................1

N

Newco...............................................1

O

Operations Software................................17
Option Exercise Period..............................3
Option Plan.........................................3
Options.............................................3

P

Paying Agent........................................5
Payment Fund........................................5
Pension Plans......................................19
Percon..............................................1
Percon Acquisition Proposal........................30
Percon Common Stock.................................1
Percon Common Stock Certificate.....................2
Percon Most Recent Fiscal Quarter End..............10
Percon Public Reports...............................9
Percon Representatives.............................29
Percon Requisite Shareholder Vote...................9
Percon Special Meeting.............................27
Percon Warrants.....................................4
Preliminary Filing.................................28
Product Software...................................17
Proxy Statement....................................22
PSC.................................................1

S

SEC................................................28
Securities Act......................................8
Securities Act Legend...............................8
Software...........................................17
Superior Percon Proposal...........................30
Surviving Corporation...............................1

T

Tax Return.........................................12
Tax Ruling.........................................12
Taxes..............................................11
Termination Date...................................35
Trade Rights.......................................17

V

Voting Agreement Shares.............................8
Voting Agreements...................................1

W

WBCA................................................1
WBCA Dissenters'Rights Provisions...................5

Y

Year 2000 Defect...................................23


<PAGE>
                          AGREEMENT AND PLAN OF MERGER

                  AGREEMENT  AND PLAN OF MERGER,  constituting  a plan of merger
under  applicable law (this  "Agreement"),  dated as of November 9, 1999, by and
among PSC Inc.,  a New York  corporation  ("PSC"),  West  Acquisition  Corp.,  a
Washington  corporation  ("Newco"),   and  Percon  Incorporated,   a  Washington
corporation ("Percon").

                  WHEREAS, as a condition and inducement to PSC's willingness to
enter into this  Agreement,  certain  holders of  capital  stock of Percon  have
entered into Voting  Agreements,  dated the date  hereof,  with PSC (the "Voting
Agreements"); and

                  WHEREAS,  the respective Boards of Directors of PSC, Newco and
Percon have approved the acquisition of Percon by Newco on the terms and subject
to the conditions set forth in this Agreement; and

                  WHEREAS,  the respective Boards of Directors of PSC, Newco and
Percon have approved the merger of Newco with and into Percon (the  "Merger") in
accordance  with the Washington  Business  Corporation Act ("WBCA") and upon the
terms and subject to the  conditions set forth in this  Agreement,  whereby each
issued and outstanding  share of the common stock,  without par value, of Percon
(the "Percon  Common  Stock") not owned  directly or indirectly by PSC or Percon
will be converted  into the right to receive  Fifteen  Dollars  ($15.00) in cash
(the "Merger Price"); and

                  WHEREAS,   PSC,  Newco  and  Percon  desire  to  make  certain
representations,  warranties and agreements in connection with, and to prescribe
certain conditions to, the Merger.

                  NOW,  THEREFORE,  in  consideration  of the mutual  covenants,
representations,  warranties and agreements contained herein, and other good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged, the parties agree as follows:

                                   Article 1
                                   The Merger.

1.1.     The Merger.

                  Subject  to the terms and  conditions  of this  Agreement,  in
accordance with the WBCA, at the Effective Time, Newco shall merge with and into
Percon,  and Percon shall  survive the Merger and shall  continue its  corporate
existence  under  the  applicable   laws,   ordinances,   rules  or  regulations
(collectively, "Laws") of the State of Washington (the "Surviving Corporation").
Upon consummation of the Merger, the separate corporate existence of Newco shall
terminate.
<PAGE>

1.2.     Effective Time.

                  The Merger  shall become  effective  upon the later of (a) the
time of filing of Articles of Merger with the Secretary of State of the State of
Washington and (b) the effective date and time of the Merger as set forth in the
Articles of Merger, which shall be the Closing Date (as defined in Section 1.10)
or the day after the Closing Date. The parties shall each use reasonable efforts
to cause  the  Articles  of  Merger to be filed on the  Closing  Date.  The term
"Effective  Time" shall be the date and time when the Merger becomes  effective,
in accordance with this Section 1.2.

1.3.     Effects of the Merger.

                  At and after the  Effective  Time,  the Merger  shall have the
effects set forth in Section 23B.11.060 of the WBCA.

1.4.     Conversion of Percon Common Stock; Treatment of Newco Common Stock.

1.4.(a) At the  Effective  Time,  subject to Section  1.11 and  Section  2.1, by
virtue of the Merger and without any action on the part of Percon, or the holder
of any  securities  of Percon,  each  share of Percon  Common  Stock  issued and
outstanding  immediately prior to the Effective Time (other than shares canceled
pursuant to Section  1.4(c)),  shall be  converted  into the right to receive in
cash the Merger Price, payable to the holder thereof,  without interest thereon,
in accordance with Article 2.

1.4.(b) All of the shares of Percon  Common  Stock  converted  into the right to
receive in cash the Merger  Price  pursuant to this Article 1 shall no longer be
outstanding and shall  automatically  be canceled and shall cease to exist as of
the  Effective  Time,  and  each  certificate   (each  a  "Percon  Common  Stock
Certificate") that immediately prior to the Effective Time represented shares of
Percon  Common Stock  entitled to payment of the Merger  Price  pursuant to this
Section  1.4 shall  thereafter  represent  only the right to receive  the Merger
Price  pursuant  to this  Section  1.4 and  Section  2.1.  Percon  Common  Stock
Certificates  previously  representing  shares of Percon  Common  Stock shall be
exchanged for cash upon the  surrender of such Percon Common Stock  Certificates
in accordance with Section 2.1.

1.4.(c) At the Effective  Time, all shares of Percon Common Stock that are owned
by Percon as treasury stock or owned by PSC or Newco,  if any, shall be canceled
and shall cease to exist,  and no  consideration  shall be delivered in exchange
therefor.

1.4.(d) At the Effective  Time,  each share of common stock,  par value $.01 per
share, of Newco issued and outstanding  immediately  prior to the Effective Time
shall,  by virtue of the Merger and without any action on the part of the holder
thereof,  be  converted  into  one  share  of  common  stock  of  the  Surviving
Corporation.  Each  certificate  evidencing  ownership of any such shares shall,
following the Merger,  evidence ownership of the same number of shares of common
stock of the Surviving Corporation.
<PAGE>

1.5. Stock Options.  Prior to the Effective Time, Percon shall take such actions
as are necessary such that all outstanding  and unexercised  options to purchase
shares of Percon Common Stock (the "Options"), including those outstanding under
the terms of the Percon  Incorporated  1995 Stock  Incentive  Plan (the  "Option
Plan"), shall be treated as follows:

1.5.(a)  Percon  shall  provide a period  of at least  thirty  (30) days  ending
immediately  prior to the Effective Time (the "Option  Exercise Period ") during
which outstanding  Options may be exercised to the extent then exercisable,  and
upon the expiration of the Option Exercise Period, all Options shall immediately
terminate;

1.5.(b)  At  the  Effective  Time,  each  Option,  to  the  extent   exercisable
immediately  prior  to the  expiration  of the  Option  Exercise  Period,  shall
represent  only the right to  receive  in cash,  in lieu of any shares of Percon
Common Stock, the amount, if any, by which the Merger Price exceeds the required
exercise price of the Option multiplied by the number of shares of Percon Common
Stock for which the Option was exercisable  immediately  prior to the expiration
of the Option Exercise Period which amount the Surviving  Corporation  shall pay
as soon as practicable  after the Effective Time,  subject to reduction only for
any applicable withholding taxes; and

1.5.(c)  To the extent an Option was not  exercisable  immediately  prior to the
expiration of the Option Exercise Period,

(i)  if the holder of the Option  executes,  within five (5) business days after
     it is presented, a confidentiality, inventions and noncompetition agreement
     in the form that PSC  generally  requires its  employees to sign (which the
     Surviving Corporation shall present as soon as possible after the Effective
     Time), then such holder shall have the right to receive in cash, in lieu of
     any shares of Percon  Common  Stock and only if and when the  Option  would
     have become  exercisable in accordance with its terms, the amount,  if any,
     by which the Merger Price exceeds the required exercise price of the Option
     multiplied  by the  number of shares of Percon  Common  Stock for which the
     Option would have become exercisable,  which amount shall be payable by the
     Surviving  Corporation  from time to time as soon as practicable  after the
     Option otherwise would have become  exercisable,  subject to reduction only
     for any applicable withholding taxes; or

(ii) if the holder of the Option does not  execute  such  agreement  in a timely
     manner, then such holder shall not have any rights in respect of the Option
     after the Effective Time.

<PAGE>

1.6. Warrants.  At the Effective Time, each warrant to purchase shares of Percon
Common  Stock  (the  "Percon  Warrants")  that is  outstanding  and  unexercised
immediately  prior to the Effective  Time shall be adjusted to provide that each
Percon Warrant will thereafter be a right to receive the Merger Price in lieu of
any shares of Percon  Common Stock upon the  exercise of the Percon  Warrant and
payment of the required exercise price of the Percon Warrant.  No other terms of
the Percon Warrants shall be affected by the foregoing adjustment.

1.7.  Articles of  Incorporation.  The  Articles of  Incorporation  of Percon in
effect as of the Effective  Time shall be the Articles of  Incorporation  of the
Surviving  Corporation  after the Merger until thereafter  amended in accordance
with applicable law.

1.8. By-Laws.  The By-Laws of Percon in effect as of the Effective Time shall be
the  By-Laws of the  Surviving  Corporation  after the Merger  until  thereafter
amended in accordance with applicable law.

1.9.  Board of Directors of the  Surviving  Corporation.  The directors of Newco
immediately  prior to the Effective Time shall be the directors of the Surviving
Corporation at the Effective  Time,  each to hold office in accordance  with the
Articles of Incorporation and By-Laws of the Surviving Corporation.

1.10. Closing. Subject to the terms and conditions of this Agreement,  including
but not limited to the  provisions  of Article 6, the closing of the Merger (the
"Closing") will take place at 1:00 p.m.  Eastern Time at the offices of PSC, 675
Basket Road, Webster, New York 14580, on a date to be specified by PSC by notice
to Percon, which shall be no later than two (2) business days after the later of
(a) the expiration of the applicable waiting period under the  Hart-Scott-Rodino
Antitrust  Improvements  Act of 1976 (the "HSR Act") and (b) the Percon  Special
Meeting (as  defined in Section  5.5),  unless the  parties  agree in writing to
another date.  Notwithstanding the foregoing, if the Closing does not take place
on the date referred to in the preceding  sentence  because any condition to the
obligations  of  Percon  or PSC is not met on that  date,  then  any  party  may
postpone the Closing from time to time to any designated subsequent business day
not more than ten business  days after the  original or postponed  date on which
the Closing was to occur by delivering  notice of such  postponement on the date
the  Closing was to occur.  The date on which the Closing  occurs is referred to
herein as the "Closing Date."
<PAGE>

1.11.  Dissenters'  Rights.  In  accordance  with  Sections  23B.13.010  through
23B.13.310  of the WBCA,  dissenters'  rights  shall be  available to holders of
Percon Common Stock in connection with the Merger.  Notwithstanding  anything to
the  contrary  herein,  any Percon  Common  Stock held of record by persons who,
prior to the Effective  Time,  have objected to the Merger and complied with all
applicable provisions of Sections 23B.13.010 through 23B.13.310 of the WBCA (the
"WBCA Dissenters'  Rights  Provisions")  necessary to perfect and maintain their
dissenters'  rights  thereunder  (any  such  Percon  Common  Stock,  "Dissenting
Shares") shall not be converted as of the Effective Time into a right to receive
the Merger Price as provided in Section 1.4,  but,  instead,  shall  entitle the
holder  of such  shares  to such  rights  as may be  available  under  the  WBCA
Dissenters' Rights Provisions;  provided,  however,  that if after the Effective
Time such holder fails to perfect or  withdraws  or  otherwise  loses his rights
under the WBCA Dissenters' Rights  Provisions,  then the shares of Percon Common
Stock  owned by such holder  immediately  prior to the  Effective  Time shall be
treated as if they had been  converted as of the Effective  Time into a right to
receive the Merger Price as provided in Section 1.4, without interest.  Prior to
the Effective  Time,  Percon shall give PSC prompt notice of its receipt of each
notification  from a  shareholder  stating such  shareholder's  intent to demand
payment for his or her shares if the Merger is  effectuated,  and PSC shall have
the right to participate in all  negotiations  and  proceedings  with respect to
such demands.  Prior to the Effective  Time,  Percon shall not,  except with the
prior written  consent of PSC,  make any payment with respect to, or settle,  or
offer to settle,  any such demands.  After the Effective Time, PSC shall pay, or
shall  cause the  Surviving  Corporation  to pay,  any  amounts  that may become
payable  in respect  of  Dissenting  Shares  under the WBCA  Dissenters'  Rights
Provisions.

                                   Article 2
                               PAYMENT FOR SHARES

2.1.     Payment for Shares.

2.1.(a) Prior to the Effective  Time,  Newco shall appoint a United States bank,
company or other entity mutually  acceptable to Percon and PSC to act as payment
agent (the  "Paying  Agent") for the payment of the Merger  Price.  Prior to the
payment time thereof,  PSC shall deposit or shall cause to be deposited with the
Paying Agent in a separate  fund  established  for the benefit of the holders of
shares of Percon Common Stock,  for payment upon  surrender of the  certificates
for  exchange in  accordance  with this Article 2, through the Paying Agent (the
"Payment Fund"),  immediately  available funds in amounts  necessary to make the
payments  pursuant  to this  Section  2.1 to holders of shares of Percon  Common
Stock (other than shares of Percon Common Stock held by Percon or any subsidiary
of Percon or PSC, Newco or any other subsidiary of PSC, or holders of Dissenting
Shares). The Paying Agent shall pay the Merger Price out of the Payment Fund.
<PAGE>

2.1.(b)  The Paying  Agent shall  invest the Payment  Fund as directed by PSC or
Newco.  All  earnings on the Payment  Fund shall inure to the benefit of PSC. If
for any  reason  the  Payment  Fund is  inadequate  to pay the  amounts to which
holders of shares of Percon Common Stock shall be entitled under Section 1.4 and
this Section 2.1, then PSC shall in any event be liable for payment thereof. The
Payment Fund shall not be used for any purpose  except as expressly  provided in
this Agreement.

2.1.(c)  Promptly after the Effective  Time, the Paying Agent shall mail to each
record  holder of Percon  Common Stock  Certificates  entitled to payment of the
Merger Price  pursuant to Section 1.4 (i) a form of letter of  transmittal  that
shall (x) specify that delivery shall be effected, and risk of loss and title to
the Percon Common Stock  Certificates  shall pass,  only upon proper delivery of
the  Percon  Common  Stock  Certificates  to the  Paying  Agent;  (y)  contain a
representation  in a form  reasonably  satisfactory  to PSC as to the  good  and
marketable  title of the shares of Percon  Common Stock held by such holder free
and clear of liens, claims, options, charges,  security interests,  limitations,
encumbrances and restrictions of any kind ("Liens");  and (z) contain such other
customary  provisions  as  Percon  and  PSC may  reasonably  specify;  and  (ii)
instructions for use in surrendering  such Percon Common Stock  Certificates and
receiving the aggregate Merger Price in respect  thereof.  Upon proper surrender
of a Percon Common Stock Certificate for exchange and cancellation to the Paying
Agent,  together  with  such  properly  completed  letter of  transmittal,  duly
executed, and subject to applicable withholding, the Paying Agent shall (subject
to applicable  abandoned  property,  escheat and similar laws) pay the holder of
such Percon  Common  Stock  Certificate,  in respect of shares of Percon  Common
Stock,  the Merger  Price  multiplied  by the number of shares of Percon  Common
Stock  formerly  represented by such Percon Common Stock  Certificate,  and such
Percon  Common  Stock  Certificate   shall  forthwith  be  canceled.   Until  so
surrendered,  each such Percon Common Stock  Certificate  shall represent solely
the right to receive the aggregate Merger Price relating thereto. No interest or
dividends  shall be paid or accrued on the Merger Price. If the Merger Price (or
any portion  thereof) is to be  delivered to any person other than the person in
whose name the Percon Common Stock Certificate is registered, then it shall be a
condition to such right to receive such Merger Price,  as  applicable,  that the
Percon Common Stock  Certificate  so surrendered  shall be properly  endorsed or
otherwise be in proper form for transfer and that the person  surrendering  such
Percon Common Stock  Certificates  shall pay to the Paying Agent any transfer or
other taxes  required  by reason of the payment of the Merger  Price to a person
other  than  the  registered  holder  of the  Percon  Common  Stock  Certificate
surrendered,  or shall  establish to the  satisfaction  of the Paying Agent that
such tax has been paid or is not applicable.

2.1.(d)  After the  Effective  Time,  there shall be no  transfers  on the stock
transfer  books of Percon of the shares of Percon  Common Stock that were issued
and outstanding immediately prior to the Effective Time. If, after the Effective
Time, Percon Common Stock  Certificates are presented for transfer to the Paying
Agent,  then they  shall be  canceled  and  exchanged  for the  Merger  Price as
provided in this Article 2.
<PAGE>

2.1.(e)  Promptly  following the first  anniversary  of the Effective  Time, the
Paying Agent shall deliver to the Surviving  Corporation all cash, Percon Common
Stock  Certificates  and  other  documents  in its  possession  relating  to the
transactions  described in this  Agreement,  and the Paying Agent's duties shall
terminate.  Thereafter,  each holder of a Percon  Common Stock  Certificate  may
surrender such Percon Common Stock Certificate to the Surviving  Corporation and
(subject to applicable abandoned property,  escheat and similar laws) receive in
consideration  therefor  the  aggregate  Merger  Price,  without any interest or
dividends  thereon.  Notwithstanding  the foregoing,  none of PSC,  Percon,  the
Paying Agent or any other person shall be liable to any former  holder of shares
of  Percon  Common  Stock for any  amount  delivered  in good  faith to a public
official pursuant to applicable abandoned property, escheat or similar laws.

2.1.(f) In the event any Percon Common Stock  Certificate  shall have been lost,
stolen or destroyed,  upon the making of an affidavit of that fact by the person
claiming such Percon Common Stock  Certificate  to be lost,  stolen or destroyed
and, if reasonably  required by the Surviving  Corporation,  the posting by such
person of a bond in such amount as the Paying Agent may  determine is reasonably
necessary  as  indemnity  against  any claim  that may be made  against  it with
respect to such Percon Common Stock  Certificate,  the Paying Agent will deliver
in exchange for such lost,  stolen or destroyed Percon Common Stock  Certificate
the Merger Price deliverable in respect thereof pursuant to this Agreement.

                                   ARTICLE 3
                    REPRESENTATIONS AND WARRANTIES OF Percon

         For purposes of this Agreement,  "Material Adverse Effect" or "Material
Adverse Change" means any effect, change, event,  circumstance or condition that
when  considered  with all other  effects,  changes,  events,  circumstances  or
conditions  would  reasonably  be expected  to  adversely  affect the  business,
financial  condition,  results  of  operations  or  financial  prospects  of the
relevant party, in each case including its  subsidiaries  together with it taken
as a whole, so that the benefits reasonably expected to be obtained by the other
party more  likely than not would be  jeopardized.  In no event shall any of the
following constitute a Material Adverse Effect or a Material Adverse Change: (a)
effects,  changes,  events,  circumstances or conditions generally affecting the
industry  in which  either PSC or Percon  operates  or arising  from  changes in
general business or economic conditions that have a substantially similar effect
on participants in the industry in which either PSC or Percon operates;  (b) any
effects,  changes,  circumstances or conditions resulting from any change in law
or generally  accepted  accounting  principles  ("GAAP")  that affect  generally
entities  such as PSC and  Percon;  and (c) any effect  that  occurs as a direct
consequence of any action that the relevant party is expressly obligated to take
under this Agreement.

         Percon hereby represents and warrants to PSC and Newco as follows:
<PAGE>

3.1.     Corporate.

                  Each of Percon  and its  subsidiaries  is a  corporation  duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction of its incorporation.  Each of Percon and its subsidiaries has full
corporate  power and authority to own,  operate and lease its  properties and to
carry on its  business as and where such is now being  conducted  and to own and
use the properties  owned and used by it. Each of Percon and its subsidiaries is
duly  licensed or qualified to do business as a foreign  corporation,  and is in
good  standing,  in each  jurisdiction  wherein the character of the  properties
owned or leased by it, or the nature of its  business,  makes such  licensing or
qualification necessary, except where the failure to so qualify would not have a
Material Adverse Effect. The copies of the Articles of Incorporation and By-Laws
of Percon and each of its subsidiaries,  including any amendments thereto,  that
have  been  delivered  to PSC are  true,  correct  and  complete  copies of such
instruments as presently in effect.  The corporate minute book and stock records
of Percon  and each of its  subsidiaries  that have  been  furnished  to PSC for
inspection are true,  correct and complete and  accurately  reflect all material
corporate action taken by Percon and each of its subsidiaries.

3.2.     Capitalization.

                  The authorized  capital stock of Percon  consists  entirely of
25,000,000  shares  consisting of 20,000,000  shares of Percon Common Stock,  of
which 3,807,711 shares are issued and outstanding and 210,000 shares are held in
treasury,  and 5,000,000 shares of preferred stock of which no shares are issued
and  outstanding  or held in treasury.  All such issued  shares of Percon Common
Stock and all  issued  shares of  capital  stock of  Percon's  subsidiaries  are
validly issued,  fully paid and  nonassessable.  Except as set forth on Schedule
3.2, there are no (a) securities  convertible  into or  exchangeable  for any of
Percon's  or any of its  subsidiary's  capital  stock or other  securities,  (b)
options,  warrants or other rights to purchase or subscribe to capital  stock or
other  securities of Percon or any of its  subsidiaries  or securities  that are
convertible into or exchangeable for capital stock or other securities of Percon
or any of its subsidiaries,  or (c) commitments,  understandings,  arrangements,
agreements,  licenses,  leases  or  other  contracts  ("Contracts")  of any kind
relating to the issuance,  sale or transfer of any capital stock or other equity
securities  of  Percon  or any of its  subsidiaries,  any  such  convertible  or
exchangeable securities or any such options, warrants or other rights. Except as
set forth on Schedule  3.2,  Percon  owns,  directly or  indirectly,  all of the
issued and  outstanding  shares of capital stock of its  subsidiaries,  free and
clear of any liens, pledges, charges, encumbrances and interests whatever. There
are no  outstanding or authorized  stock  appreciation,  phantom  stock,  profit
participation,  or  similar  rights  with  respect  to  Percon  or  any  of  its
subsidiaries.  No shares of Percon  Common Stock or the capital  stock of any of
its  subsidiaries  have been  reserved  for  issuance,  other than the shares of
Percon Common Stock  reserved for issuance under the Option Plan or the warrants
set forth on Schedule 3.2.  Except as set forth on Schedule 3.2,  neither Percon
nor any of its subsidiaries has redeemed or repurchased, directly or indirectly,
any of its capital stock since January 1, 1997. The persons executing the Voting
Agreements own of record the shares of Percon Common Stock subject to the Voting
Agreements ("Voting Agreement Shares"),  and the certificates  representing such
shares  include a  restrictive  legend to the effect  that the shares may not be
transferred  unless the transfer is registered under the Securities Act of 1933,
as amended (the "Securities Act"), or Percon is satisfied that an exemption from
registration  under  the  Securities  Act  is  available  (the  "Securities  Act
Legend").
<PAGE>

3.3.     Authorization.

                  Percon has full power and authority  (including full corporate
power and  authority)  to  execute  and  deliver  this  Agreement  and the other
agreements,  instruments  and  documents  contemplated  hereby  (the  "Ancillary
Instruments")  and to perform its  obligations  hereunder  and  thereunder.  The
execution and delivery of this Agreement and the Ancillary  Instruments  and the
consummation of the transactions  contemplated hereby and thereby have been duly
and  unanimously  approved  by the Board of  Directors  of Percon,  and no other
corporate proceedings on the part of Percon or its shareholders are necessary to
authorize  this  Agreement and to consummate the  transactions  so  contemplated
other than the approval of this Agreement and the Merger by the affirmative vote
of the holders of a majority of the  outstanding  shares of Percon  Common Stock
(the "Percon Requisite Shareholder Vote"). This Agreement has been duly executed
and delivered and constitutes,  and the Ancillary  Instruments when executed and
delivered by Percon will constitute, the valid and legally binding obligation of
Percon enforceable in accordance with their respective terms and conditions.  In
light of the nature of this Agreement and the transactions  contemplated  hereby
and the  approval  thereof by the Board of  Directors  of Percon,  no  so-called
"supermajority  vote," "fair price,"  "business  combination"  or "control share
acquisition" provisions are applicable to the transactions  contemplated by this
Agreement under  applicable law or the Articles of  Incorporation  or By-Laws of
Percon or any of its subsidiaries.

3.4.     No Violation.

                  Except as set forth on Schedule 3.4, neither the execution and
delivery of this Agreement or the Ancillary  Instruments nor the consummation by
Percon of the transactions  contemplated hereby and thereby (a) will violate any
constitution,   statute,  law,  ordinance,   rule,   regulation,   order,  writ,
injunction,  judgment,  plan,  decree,  or other  restriction of any government,
governmental  agency  or court to which any of Percon  and its  subsidiaries  is
subject  or any  provision  of the  charter  or bylaws of any of Percon  and its
subsidiaries, (b) except for (i) applicable requirements of (A) the HSR Act, (B)
other state and foreign antitrust laws, (C) the Securities Exchange Act of 1934,
as amended,  (D) the Securities Act, and (E) state securities or "blue sky laws"
("Blue Sky Laws"),  and (ii) the filing of  Articles  of Merger  pursuant to the
WBCA,  will require any  authorization,  consent,  approval,  exemption or other
action by, notice to or filing with any government or  governmental  agency,  or
(c) subject to obtaining the consents  referred to in Schedule 3.4, will violate
or conflict  with,  or  constitute  a default (or an event that,  with notice or
lapse of time, or both, would constitute a default) under, or will result in the
termination  of, or  accelerate  the  performance  required by, or result in the
creation  of any lien or security  interest  upon any of the assets of Percon or
any of its  subsidiaries  under  any  term  or  provision  of  the  Articles  of
Incorporation or By-Laws of Percon or any of its subsidiaries or of any Contract
or  restriction  of any kind or  character  to which any of Percon or any of its
subsidiaries  is a party or by which Percon or any of its  subsidiaries is bound
or to which the assets or properties of Percon or any of its subsidiaries may be
bound or affected.
<PAGE>

3.5.     Filings with the SEC.

                  Percon  has  made  all  filings  with the SEC that it has been
required to make under the  Securities  Act, or the Exchange Act  (collectively,
the "Percon  Public  Reports").  Each of the Percon Public  Reports has complied
with the  Securities  Act and/or the  Exchange  Act,  as the case may be, in all
material  respects.  None of the Percon Public Reports,  as of their  respective
dates,  contained any untrue  statement of a material fact or omitted to state a
material fact necessary in order to make the statements  made therein,  in light
of the circumstances under which they were made, not misleading. Percon has made
available to PSC a correct and complete  copy of each Percon  Public  Report and
each SEC comment letter with respect to such report, if applicable, filed within
the  five (5)  years  prior to the  date of this  Agreement  (together  with all
exhibits and schedules thereto and as amended to date).

3.6.     Financial Statements.

                  Percon has filed with the SEC a Quarterly  Report on Form 10-Q
for the fiscal quarters ended March 31, 1999 and June 30, 1999 (the "Percon Most
Recent  Fiscal  Quarter End") and an Annual Report on Form 10-KSB for the fiscal
year  ended  December  31,  1998.  The  financial   statements  included  in  or
incorporated  by  reference  into these Percon  Public  Reports  (including  the
related notes and schedules)  have been prepared in accordance with GAAP applied
on a consistent basis throughout the periods covered thereby, present fairly the
financial condition of Percon and its subsidiaries as of the indicated dates and
the  results of  operations  of Percon and its  subsidiaries  for the  indicated
periods  and are  consistent  with the  books  and  records  of  Percon  and its
subsidiaries;  provided,  however,  that the interim  statements  are subject to
normal year-end adjustments that individually or in the aggregate would not have
a Material Adverse Effect.

3.7.     Tax Matters

3.7.(a) Percon and each of its subsidiaries  have filed (or there has been filed
on its behalf) all Tax Returns (as hereinafter  defined) required to be filed by
each of them under  applicable law except where failure to file such Tax Returns
would not have a Material  Adverse Effect.  All such Tax Returns were and are in
all material  respects  true,  complete and correct and filed on a timely basis.
Percon  has  delivered  to PSC  complete  copies  of all such Tax  Returns,  all
examination  reports  delivered to Percon or its subsidiaries and all statements
of  deficiencies  assessed  against  or  agreed  to by any  of  Percon  and  its
subsidiaries (as hereinafter  defined) since January 1, 1995 and all Tax Rulings
(as hereinafter  defined) and Closing  Agreements (as hereinafter  defined) with
respect to Percon or its subsidiaries since January 1, 1995.

3.7.(b)  Percon and each of its  subsidiaries  have,  within the time and in the
manner  prescribed  by law,  paid all Taxes (as  hereinafter  defined)  that are
currently due and payable except for those contested in good faith and for which
adequate  reserves  have been taken and except  those as to which the failure to
pay would not have a Material Adverse Effect.

3.7.(c) Percon and its subsidiaries  have established on their books and records
reserves  adequate to pay all Taxes and reserves  for  deferred  income taxes in
accordance with GAAP.
<PAGE>

3.7.(d)  There  are no  Tax  liens  upon  the  assets  of  Percon  or any of its
subsidiaries except liens for Taxes not yet due.

3.7.(e)  Percon  and each of its  subsidiaries  have  complied  in all  material
respects with the  provisions  of the Internal  Revenue Code of 1986, as amended
(the "Code") relating to the withholding of Taxes, as well as similar provisions
under any other law, with respect to any employee  wages and any amounts owed to
any independent contractor, creditor, shareholder, or other third party and have
paid over to the proper governmental authorities all such amounts required to be
withheld and paid over.

3.7.(f)  Except as set forth on  Schedule  3.7,  neither  Percon  nor any of its
subsidiaries  has  requested  any extension of time within which to file any Tax
Return,  which Tax Return has not since been timely  filed  (taking into account
such extensions).

3.7.(g) Neither Percon nor any of its  subsidiaries has executed any outstanding
waivers or comparable consents extending the statute of limitations with respect
to any Taxes or Tax Returns.

3.7.(h) To the actual knowledge of Percon,  no deficiency for any Taxes has been
proposed,  asserted or assessed  against  Percon or any of its  subsidiaries  in
writing that has not been resolved and paid in full.

3.7.(i) To the actual  knowledge  of Percon,  no audits or other  administrative
proceedings or court  proceedings are presently pending with regard to any Taxes
or Tax Returns of Percon or any of its subsidiaries.

3.7.(j) No power of attorney  currently  in force has been  granted by Percon or
any of its subsidiaries concerning any tax matter.

3.7.(k) Neither Percon nor any of its  subsidiaries  has requested or received a
Tax Ruling (as hereinafter defined) or entered into a Closing Agreement with any
taxing  authority that would have a continuing  material effect on the Surviving
Corporation after the Closing Date.

3.7.(l)  Neither Percon nor any of its  subsidiaries  is a party to any Contract
that  could  result,  on  account of the  transactions  contemplated  hereunder,
separately  or in  the  aggregate,  in the  payment  of  any  "excess  parachute
payments"  within  the  meaning  of  Section  280G of the Code or  nondeductible
compensation under Code Section 162(m).

3.7.(m)  None of Percon or any of its  subsidiaries  (A) has any  liability  for
Taxes of any person other than Percon and its  subsidiaries  (i) under  Treasury
Regulations  Section  1.1502-6  (or any  similar  provision  of state,  local or
foreign law) as a transferee or successor, (ii) by Contract, or (iii) otherwise,
(B) is a party to any Tax  allocation  or sharing  agreement,  (C) has adopted a
plan of  liquidation or (D) has made any election under Code Section 338 (or any
similar provision of state, local or foreign law).
<PAGE>

3.7.(n)  As used in this Agreement:

(i)  "Taxes" means any federal,  state, county, local or foreign taxes, charges,
     fees, levies, or other assessments, including all net income, gross income,
     sales and use, ad valorem,  transfer,  gains, profits,  excise,  franchise,
     real and personal  property,  gross  receipts,  capital stock,  production,
     business  and  occupation,   disability,   employment,   payroll,  license,
     estimated,  stamp, custom duties, severance or withholding taxes or charges
     imposed by any governmental entity, and includes any interest and penalties
     (civil or criminal) on or additions to any such taxes;

(ii) "Tax Return"  means a report,  return or other  information  required to be
     supplied to a governmental  entity with respect to Taxes  including,  where
     permitted  or  required,  combined or  consolidated  returns for a group of
     entities;

(iii)"Tax  Ruling"  means a written  ruling of a taxing  authority  relating  to
     Taxes; and

(iv) "Closing  Agreement"  means a written and legally binding  agreement with a
     taxing authority relating to Taxes.

3.8.     Absence of Certain Changes.

                  Except as and to the extent set forth in Schedule  3.8,  since
December 31, 1998,  there has not been (a) any  Material  Adverse  Change in the
business,  results of operations,  financial  condition,  properties,  assets or
prospects of Percon,  (b) in the case of Percon or any of its subsidiaries,  any
declaration,  setting aside or payment of any dividend or any other distribution
with  respect  to its  capital  stock,  (c) any  damage,  destruction,  or other
casualty loss with respect to any asset or property  owned,  leased or otherwise
used by Percon or any of its  subsidiaries,  (d) any conduct of business that is
outside the ordinary course of business or not  substantially in the manner that
Percon previously conducted its business,  except for transactions  contemplated
by this Agreement, (e) any change by Percon in accounting principles or methods,
(f) any issuance or sale of capital  stock or other  securities of Percon or any
of its  subsidiaries or grant of options to purchase any shares of capital stock
or any other  securities of any of them or  adjustment,  split,  combination  or
reclassification  of their capital stock or other securities or changes in their
capital  structures,  (g) any material commitment or obligation by Percon or any
of its  subsidiaries,  other than trade or business  obligations  or liabilities
incurred in the ordinary  course of business;  (h) any  amendment to any Benefit
Plan (as defined in Section 3.18) or the adoption of any arrangement  that would
be a Benefit  Plan,  increase  in the  compensation  or fringe  benefits  of any
director,  officer or employee  or  execution  of any  Contract to do any of the
foregoing,  or (i) any  sale,  lease or other  transfer  or  disposition  of any
properties or assets of Percon or any of its subsidiaries, other than for a fair
consideration  in the ordinary course of business.  Schedule 3.8 contains a list
of the ten (10) largest  customers,  including  distributors,  of Percon and its
subsidiaries for each of the two (2) most recent fiscal years (determined on the
basis of the total dollar  amount of net sales)  showing the total dollar amount
of net sales to each such customer during each such year. Percon has received no
notice  (written  or oral) of any  facts  indicating  that any of the  customers
<PAGE>


listed on  Schedule  3.8 will not  continue  to be  customers  of Percon and its
subsidiaries  after the Closing at substantially  the same level of purchases as
heretofore.  Schedule 3.8  contains a list of the ten (10) largest  suppliers to
Percon and its  subsidiaries  for each of the two (2) most recent  fiscal  years
(determined  on the basis of the total dollar amount of  purchases)  showing the
total dollar amount of purchases from each such supplier  during each such year.
Percon has received no notice (written or oral) of any facts indicating that any
of the suppliers listed on Schedule 3.8 will not continue to be suppliers to the
business of Percon and its subsidiaries  after the Closing and will not continue
to supply Percon and its subsidiaries  with  substantially the same quantity and
quality of goods at competitive prices.

3.9.     Undisclosed Liabilities.

                  Except  as  set  forth  in  Schedule   3.9,   and  except  for
liabilities  or  obligations  that were incurred  after December 31, 1998 in the
ordinary course of business and of a type and in an amount  consistent with past
practices  (none of which  results  from,  arises out of,  relates to, is in the
nature of, or was caused by, any breach of Contract,  breach of warranty,  tort,
infringement  or violation of Law),  neither Percon nor any of its  subsidiaries
has any material liability or obligation (whether absolute,  accrued, contingent
or  otherwise,  and whether due or to become due) that is not accrued,  reserved
against or identified in the  financial  statements  dated as of the Percon Most
Recent  Fiscal  Quarter End.  There are no rights of return or other  agreements
between Percon or any of its  subsidiaries and any customer that would cause any
sales  reflected  in the  financial  statements  included  in the Percon  Public
Reports to fail to qualify as sales in accordance with GAAP and Percon's revenue
recognition  policy as reflected  in the  financial  statements  included in the
Percon Public Reports.

3.10.    No Litigation.

                  Except  as set  forth in  Schedule  3.10,  there is no  claim,
action, suit, arbitration,  proceeding, investigation or inquiry, whether civil,
criminal or administrative  ("Litigation"),  pending or, to Percon's  knowledge,
threatened against Percon or any of its subsidiaries or any of their officers or
directors (in such capacity),  their business or any of their assets,  at law of
in  equity,  before  or by any  federal,  state,  foreign,  municipal  or  other
governmental  agency or  authority,  or before any  arbitration  board or panel.
Schedule  3.10 also  identifies  all  Litigation  to which  Percon or any of its
subsidiaries  or any of their officers or directors (in such capacity) have been
parties since  January 1, 1996,  where the damage  sought  exceeded  Twenty-Five
Thousand  Dollars  ($25,000) or where the remedy sought was equitable relief the
granting  of which  would  have had a  material  effect.  Except as set forth in
Schedule 3.10,  neither Percon nor any of its subsidiaries nor their business or
assets is subject to any order of any  federal,  state,  foreign,  municipal  or
other governmental agency or authority.
<PAGE>

3.11.    Environmental Matters.

3.11.(a)  Except  as  set  forth  on  Schedule  3.11,  Percon  and  each  of its
subsidiaries  are in compliance  with all applicable  federal,  state,  foreign,
regional  and  local  laws,  statutes,   ordinances,   judgments,   rulings  and
regulations  and  applicable  common law  principles  relating to any matters of
pollution,  protection of the environment or environmental regulation or control
(collectively, "Environmental Laws") except for instances of noncompliance where
neither the costs and  penalties  associated  with  noncompliance  nor the costs
associated with rectifying the  noncompliance,  individually or in the aggregate
with those associated with other instances of noncompliance  subject to this and
similar  exceptions,   would  be  material.   Neither  Percon  nor  any  of  its
subsidiaries  has  received  any  written  notice  (i)  of any  violation  of an
Environmental  Law  or  (ii)  of  the  institution  of  any  Litigation  by  any
governmental  agency or authority or any third party alleging that Percon or any
of its  subsidiaries  may be in violation  of or liable under any  Environmental
Law.

3.11.(b)  Except as disclosed on Schedule  3.11,  neither  Percon nor any of its
subsidiaries has (i) placed, held, located, released, transported or disposed of
any Hazardous  Substances (as hereinafter  defined) on, under, from or at any of
the properties currently or previously owned or operated by Percon or any of its
subsidiaries,  except in  compliance  with  Environmental  Laws or  instances of
noncompliance   where   neither  the  costs  and   penalties   associated   with
noncompliance  nor the  costs  associated  with  rectifying  the  noncompliance,
individually  or in the aggregate with those  associated with other instances of
noncompliance  subject to this and similar exceptions,  would be material,  (ii)
been subject to liability for any Hazardous  Substance disposal or contamination
on any of its  property  or any third party  property,  (iii)  knowledge  of the
presence of any Hazardous  Substances  on, under or at any of Percon's or any of
its subsidiaries' properties or any other property to the extent the presence of
Hazardous  Substances  on any other  property  was caused by the  operations  of
Percon or any of its  subsidiaries,  or (iv) received any written  notice (x) of
any  actual  or  potential  liability  for the  response  to or  remediation  of
Hazardous  Substances  at or  arising  from  any  of  Percon's  or  any  of  its
subsidiaries'  properties  or any  other  properties,  or (y) of any  actual  or
potential  liability  for the costs of response to or  remediation  of Hazardous
Substances  at or  arising  from  any of  Percon's  or any of its  subsidiaries'
properties or any other  properties.  For purposes of this  Agreement,  the term
"Hazardous Substance" shall mean any toxic or hazardous materials or substances,
including  asbestos,  buried  contaminants,   chemicals,  flammable  explosives,
radioactive  materials,  petroleum  and  petroleum  products and any  substances
defined as, or included in the definition of, "hazardous substances", "hazardous
wastes",  "hazardous  materials" or "toxic  substances"  under any Environmental
Law.  Percon has provided PSC with true and correct copies of all  environmental
reports in the possession of Percon or any of its  subsidiaries or their agents,
representatives or consultants  relating to property owned or operated by Percon
or any of its subsidiaries.

3.11.(c)  No  Environmental  Law  imposes  any  obligation  upon  Percon  or its
subsidiaries  arising out of or as a condition to any  transaction  contemplated
hereby, including, without limitation, any requirement to modify or transfer any
permit or license,  any requirement to file any notice or other  submission with
any   governmental   agency  or   authority,   the   placement  of  any  notice,
acknowledgement,  or covenant in any land  records,  or the  modification  of or
provision of notice under any agreement,  consent order, or consent  decree.  No
lien has  been  placed  upon any of  Percon's  properties  or its  subsidiaries'
properties under any Environmental Law.
<PAGE>

3.12.    Title to Assets.

                  Each of Percon and its subsidiaries  owns good and valid title
to the assets and  properties  that it owns or  purports to own,  including  the
assets  reflected  on its  balance  sheet as of the Percon  Most  Recent  Fiscal
Quarter End, free and clear of any and all Liens,  except those Liens identified
on Schedule 3.12 as "Existing Liens" and Liens for taxes not yet due and payable
and such  other  Liens or minor  imperfections  of  title,  if any,  that do not
materially  detract  from the value or  interfere  with the  present  use of the
affected asset.

3.13.    Insurance.

                  Percon has given PSC access to true and correct  copies of all
policies of insurance in which Percon or any of its  subsidiaries is named as an
insured party or that  otherwise  relate to or cover any assets or properties of
Percon or any of its  subsidiaries.  Each of such  policies is in full force and
effect,  and the  coverage  provided  under such  properties  complies  with the
requirements  of any  Contracts  binding  on Percon  or any of its  subsidiaries
relating to such  assets or  properties.  Except as set forth in Schedule  3.13,
neither  Percon  nor  any  of  its  subsidiaries  has  received  any  notice  of
cancellation  or termination  with respect to any material  insurance  policy of
Percon or any of its subsidiaries.

3.14.    Material Contracts and Agreements.

3.14.(a)  Schedule 3.14 includes the following  Contracts to which Percon or any
of its  subsidiaries  is a party:  (i) all Contracts  with Symbol  Technologies,
Inc.; (ii) contract manufacturing Contracts (whether Percon or its subsidiary is
the manufacturer or the party for whom products are  manufactured);  (iii) other
than nonexclusive  software licenses to customers of Percon and its subsidiaries
in the ordinary  course of its  business,  all Contracts in which it receives or
extends a license to use a Trade Right (as  defined in Section  3.15) other than
Software (as defined in Section  3.15);  (iv) any OEM or VAR sales Contract that
by its terms involves a commitment  exceeding Two Hundred Fifty Thousand Dollars
($250,000)  in amount or that  involves a customer  from which Percon and/or its
subsidiaries  received  revenues in excess of Two Hundred Fifty Thousand Dollars
($250,000)  during the year ended December 31, 1998 or during the current fiscal
year;  and (v) all Contracts to which an affiliate of Percon is a party that are
not listed as exhibits to Percon's  most recent  Annual  Report on Form 10-K and
that by its terms  involves  a  commitment  in excess  of Twenty  Five  Thousand
Dollars  ($25,000).  Except as listed on Schedule  3.14,  there are no Contracts
that are material to the business, financial condition,  properties,  results of
operations or prospects of Percon and its subsidiaries taken as a whole.
<PAGE>

3.14.(b) As of the date hereof and except as disclosed on Schedule 3.14, neither
Percon nor any of its subsidiaries has defaulted in its performance or failed to
perform under,  and to the knowledge of Percon,  no other party has defaulted in
its performance or failed to perform under, and there is no anticipatory  breach
of, any of the Contracts  listed or required to be listed on Schedule  3.14, and
none of the  parties  to any  such  Contract  has  alleged  that the  other  has
defaulted  in  performance  or failed to  perform,  other  than (i) a default in
payment that shall not have  continued  more than thirty (30) days from the date
on which the payment was  originally due pursuant to the terms of the applicable
Contracts,  and (ii) a default or failure that is immaterial with respect to all
such Contracts  (provided that all such  immaterial  defaults or failures in the
aggregate are  immaterial  with respect to all such  Contracts when taken in the
aggregate).  As of the date hereof and except as  disclosed  on  Schedule  3.14,
neither  Percon  nor  any  of  its  subsidiaries  has  received  notice  of  any
anticipatory breach,  pending dispute or anticipated  litigation arising from or
relating to any of such Contracts, or notice that any of such Contracts has been
or will be cancelled, revoked or otherwise terminated.

3.14.(c) Except as listed on Schedule 3.14, neither Percon nor any subsidiary is
subject to any agreement  that  restricts  competition  with any other person or
provides that Percon, any subsidiary or affiliate may not engage in any business
or sell or distribute any product or service.

3.14.(d)  Except as disclosed on Schedule  3.14,  neither  Percon nor any of its
subsidiaries has any currency  hedges,  derivatives or any other similar type of
instrument intended to eliminate or diminish financial risk.

3.15.    Intellectual Property.

3.15.(a)  Schedule 3.15 lists (to the extent  susceptible  to listing) all Trade
Rights (as defined below) in which Percon or any of its subsidiaries now has any
interest,  specifying whether such Trade Rights are owned,  controlled,  used or
held  (under  license or  otherwise)  by Percon and its  subsidiaries,  and also
indicating  which of such Trade Rights are registered or for which  applications
for registration are pending and the names of the  jurisdictions  covered by the
applicable  registration or  application.  Except as set forth on Schedule 3.15,
all Trade  Rights  shown as  registered  in  Schedule  3.15  have been  properly
registered,  all pending  registrations and applications have been properly made
and filed and all  annuity,  maintenance,  renewal  and other fees  relating  to
registrations or applications are current.
<PAGE>

3.15.(b) Except as set forth on Schedule 3.15, to conduct the business of Percon
and its  subsidiaries,  as such is currently  being  conducted or proposed to be
conducted, Percon and its subsidiaries do not require any Trade Rights that they
do not  already  have.  Except as set forth on  Schedule  3.15,  Percon  and its
subsidiaries  are not  infringing and have not infringed any Trade Rights or any
proprietary rights in Software (as defined below) of another in the operation of
their  business,  nor is any other person  infringing the Trade Rights of Percon
and its  subsidiaries.  Except as set forth on Schedule  3.15, to the extent any
product of Percon or any of its subsidiaries incorporates other Software, Percon
and its  subsidiaries  have all  requisite  rights to so  incorporate  the other
Software in its product and further to license its product to others.  Except as
set forth on Schedule  3.15,  to the  knowledge of Percon,  there are no pending
patent  applications  belonging to others that Percon or any of its subsidiaries
would  infringe if a patent  that  included  such  claims  were  granted on such
pending  applications.  Neither Percon nor any of its  subsidiaries has received
any notice from any third party asserting that Percon or any of its subsidiaries
is infringing any Trade Rights or any proprietary rights in Software,  asserting
ownership of any Trade  Rights or any  proprietary  rights in Software,  seeking
damages  arising from the use of any Trade Rights or any  proprietary  rights in
Software, offering to grant a license to use any Trade Rights or any proprietary
rights in Software or requesting  indemnification  from liability arising out of
the use of any Trade Rights or any proprietary  rights in Software,  and neither
Percon nor any of its  subsidiaries  has sent a notice to any such  effect.  The
matters set forth in the letter from Percon to PSC dated  November 9, 1999,  are
true, complete and correct.

3.15.(c) Other than the granting of nonexclusive  software licenses to customers
of Percon and its subsidiaries in the ordinary course of its business, except as
listed on  Schedule  3.15,  Percon and its  subsidiaries  have not  granted  any
license or made any  assignment of any Trade Right listed on Schedule  3.15, nor
does Percon or any of its subsidiaries pay any royalties or other  consideration
for the right to use any Trade Rights of others.  There is no Litigation pending
or  threatened  to  challenge  Percon's  or its  subsidiaries  right,  title and
interest with respect to their  continued use and right to preclude  others from
using any Trade Rights of Percon or its subsidiaries.

3.15.(d)  Except as set forth on Schedule  3.15,  all Trade Rights of Percon and
its subsidiaries are valid,  enforceable and in good standing,  and there are no
equitable defenses to enforcement based on any act or omission of Percon and its
subsidiaries.  Except as set forth on Schedule  3.15,  the  consummation  of the
transactions contemplated hereby will not alter or impair any Trade Rights owned
or used by Percon or any of its  subsidiaries.  Percon and its subsidiaries have
taken all  reasonable  actions  to  maintain  the  secrecy  of their  respective
material Trade Rights as confidential, trade secret and/or copyrighted material.
<PAGE>

3.15.(e) As used herein,  the term "Trade  Rights" shall mean: (i) all trademark
rights business  identifiers,  trade dress, service marks, trade names and brand
names,  all  registrations  thereof and  applications  therefor and all goodwill
associated with the foregoing; (ii) all copyrights,  copyright registrations and
copyright  applications,  and all other rights associated with the foregoing and
the  underlying  works of  authorship;  (iii) all U.S.  and foreign  patents and
patent  applications,  including all abandoned patents and patent  applications,
and  all  international   proprietary  rights  associated  therewith;  (iv)  all
Contracts granting any right, title, license or privilege under the intellectual
property rights of any third party; (v) all inventions, mask works and mask work
registrations, know-how, discoveries, improvements, designs, trade secrets, shop
and royalty rights,  employee covenants and agreements  respecting  intellectual
property and non-competition and all other types of intellectual property;  (vi)
all  claims  for  infringement  or  breach  of any of the  foregoing;  (vii) all
intellectual property relating to Software; (viii) all internet addresses, sites
and domain names;  and (ix) all licenses and immunities  under any of the rights
described in the  foregoing  clauses that arise by operation of Law, are implied
by Law or are otherwise  created by means other than  Contract.  For purposes of
this  Agreement,  "Software"  shall mean a computer  program or any part of such
computer  program,  whether in source  code,  object code or any other form,  in
whatever format  recorded,  and all  modifications,  enhancements or corrections
made to such program, and all documentation relating to such program,  including
any flow  charts,  designs,  instructions,  job control  procedures  and manuals
relating to such program in printed or machine readable form.

3.16.    Software; Protection.

3.16.(a)  Software.  Set forth on Schedule  3.16(a) is a list and description of
all (i) Software products currently offered or offered at any time since January
1, 1999, or incorporated in other products  currently  offered or offered at any
time  since  January  1,  1999,  by  Percon  or any of its  subsidiaries  to its
customers  ("Product  Software")  and (ii)  department-wide  or  enterprise-wide
Software used in the day-to-day operation of departments of Percon or any of its
subsidiaries ("Operations Software"). Except for Software programs identified on
Schedule 3.16(a) as Software that Percon or any of its subsidiaries does not own
but which Percon or any of its  subsidiaries  has been duly authorized to use or
distribute  by an  instrument in writing,  each  Software  program  published or
distributed  by Percon or any of its  subsidiaries  is a "work made for hire" as
defined by the Copyright  Act of 1976, as amended,  or is subject to a copyright
that has been assigned  exclusively to Percon or any of its  subsidiaries  by an
instrument in writing.  Except as set forth on Schedule  3.16(a),  each past and
present employee and independent contractor  participating in the development of
any such  Software is bound by a  confidentiality  and  nondisclosure  agreement
executed by such  employee or  independent  consultant  and Percon or any of its
subsidiaries,  which  agreement  prohibits the  disclosure  of any  confidential
information  of Percon or any of its  subsidiaries  for a defined period of time
following  termination  of  employment  with Percon or any of its  subsidiaries.
Percon and its subsidiaries  are not aware of any breach of any  confidentiality
agreement  in favor of Percon and its  subsidiaries  relating  to such  Software
owned by Percon and its  subsidiaries  either by its present or former employees
or third parties.

3.16.(b)  Software  Protection  Policy.  Set  forth  on  Schedule  3.16(b)  is a
description of the policy of Percon and its subsidiaries  concerning the use and
protection of Software.

3.16.(c) Transferability of Software Rights. Percon and its subsidiaries owns or
has rights  under  license in the  Software  listed on Schedule  3.16(a),  which
identifies  whether Percon or any of its subsidiaries  owns such Software or has
such rights under license and whether such rights under license are exclusive or
nonexclusive;  and except as set forth on Schedule 3.16(c),  the consummation of
the  transactions  contemplated  by  this  Agreement  shall  not  result  in any
obligation to pay any additional licensing, transfer or other fee.
<PAGE>

3.16.(d) Documentation,  Security and Ownership of Software. Except as set forth
on Schedule  3.16(d),  Percon and its  subsidiaries  have user  installation and
operation manuals for all Software used in the development of or incorporated in
Product  Software  that is critical to the  development  of products  offered by
Percon and its subsidiaries and for all Operations Software. Except as set forth
on Schedule  3.16(d),  all Product  Software is documented  through flow charts,
designs, database models, entity relationship diagrams or business processes and
user installation and procedure manuals that are sufficient to enable Percon and
its  subsidiaries  to offer such  Software to its  customers  and  support  such
Software. Except as set forth on Schedule 3.16(d), neither Percon nor any of its
subsidiaries  has  disclosed  or  delivered  to any  person,  or  permitted  the
disclosure or delivery to any escrow agent or other person,  of the source code,
or any portion or aspect of the source code, or any  proprietary  information or
algorithm  contained in any source code,  of any  Software.  Except for Software
that  Percon  and  its  subsidiaries  license  on a  nonexclusive  basis  to its
customers in the ordinary course of business and except as set forth on Schedule
3.16,  Percon and its subsidiaries have not conveyed or granted any other rights
to such  Software,  nor are Percon and its  subsidiaries  obligated to convey or
grant any rights to license,  market,  incorporate  in other  Software,  sell or
otherwise use such Software to third parties, and to the knowledge of Percon, no
third  party  has  unauthorized   access  to  such  Software.   Percon  and  its
subsidiaries  possess  the  original  of all  documentation,  including  without
limitation  all source codes,  for all Software  owned outright by it. Except as
disclosed  on  Schedule   3.16(d),   upon   consummation  of  the   transactions
contemplated hereby,  Percon and its subsidiaries or Surviving  Corporation will
continue  to  own  all  of  the  Software  owned  outright  by  Percon  and  its
subsidiaries  prior  to the  Closing,  free  and  clear  of all  claims,  liens,
encumbrances,  obligations  and  liabilities  except  for  such  claims,  liens,
encumbrances,  obligations  and liabilities of Percon and its  subsidiaries  (A)
applicable  to Software  licensed to third  parties and (B) as may be granted by
Percon and its  subsidiaries  or Surviving  Corporation  after the Closing Date.
Percon and its subsidiaries have provided to PSC or Newco access to or copies of
Percon and its subsidiaries' customer support log and trouble shooting tools and
solutions  relating to their Software  products  covering at least the two years
preceding the date hereof.

3.17.    Labor Matters.

                  Except as set forth in Schedule 3.17, within the last five (5)
years Percon and its subsidiaries have not experienced any labor disputes, union
organization  attempts  or any  work  stoppage  due to  labor  disagreements  in
connection  with its business.  Except to the extent set forth in Schedule 3.17,
(a) Percon and its  subsidiaries  are in  compliance  with all  applicable  laws
respecting  employment  and  employment  practices,   terms  and  conditions  of
employment and wages and hours, and is not engaged in any unfair labor practice;
(b) there are no unfair labor practice charges or complaints  against Percon and
its subsidiaries pending or, to Percon's knowledge, threatened that would have a
Material  Adverse  Effect;  (c) there is no labor  strike,  slowdown or stoppage
actually  pending or, to Percon's  knowledge,  threatened  against or  affecting
Percon and its subsidiaries  nor, to Percon's  knowledge,  any secondary boycott
with respect to products of Percon and its subsidiaries; (d) Percon is not aware
of any question  concerning  representation or, to Percon's  knowledge,  threats
respecting the employees of Percon and its  subsidiaries;  (e) no grievance that
may  reasonably  be  expected  to  have  a  Material  Adverse  Effect,  nor  any
arbitration  proceeding arising out of or under collective  bargaining agreement
that may reasonably be expected to have a Material  Adverse  Effect,  is pending
and no such claim therefor exists;  and (f) there are no administrative  charges
or court  complaints  against  Percon and its  subsidiaries  concerning  alleged
employment  discrimination  or  other  employment  related  matters  pending  or
threatened before the U.S. Equal Employment  Opportunity Commission or any other
governmental  entity.  Except as set forth on Schedule 3.17,  neither Percon nor
any of its subsidiaries is a party to any labor agreement, collective bargaining
agreement, union contract or other similar agreement.
<PAGE>

3.18.    ERISA Compliance.

3.18.(a)  Schedule 3.18 contains a list (including a brief description where the
listing of the item does not  indicate  the  subject  matter)  of all  "employee
pension benefit plans" (as defined in Section 3(2) of the Employment  Retirement
Income Security Act of 1974, as amended ("ERISA")) (sometimes referred to herein
as "Pension  Plans"),  "employee  welfare  benefit plans" (as defined in Section
3(1)  of  ERISA)  and  all  other  bonus,  pension,  profit  sharing,   deferred
compensation,  incentive compensation,  stock ownership,  stock purchase,  stock
option,  phantom  stock,  retirement,  vacation,  severance,  disability,  death
benefit, Christmas bonus, hospitalization, medical or other plan, arrangement or
understanding (whether or not legally binding) providing benefits to any current
or  former   employee  or  director  of  Percon  or  any  of  its   subsidiaries
(collectively,  "Benefit Plans") maintained, or contributed to, by Percon or any
of its  subsidiaries  for the benefit of any  officers or employees of Percon or
any of its  subsidiaries  currently  or within the last five  years.  Percon has
delivered to PSC true, complete and correct copies of (1) each Benefit Plan (or,
in the case of any unwritten Benefit Plans,  descriptions thereof), (2) the most
recent annual report on Form 5500 filed with the Internal  Revenue  Service with
respect to each  Benefit  Plan (if any such report was  required),  (3) the most
recent  summary  plan  description  for each Benefit Plan for which such summary
plan  description  is  required,  (4) each  trust  agreement  and group  annuity
contract  relating to any Benefit Plan, and (5) the most recent actuarial report
relating to any Benefit Plan.

3.18.(b)  Except as disclosed in Schedule  3.18, all Pension Plans have been the
subject of determination letters from the Internal Revenue Service to the effect
that such Pension Plans are qualified and exempt from federal income taxes under
Section 401(a) and 501(a), respectively,  of the Code, and no such determination
letter has been revoked nor, to the  knowledge of Percon,  has  revocation  been
threatened,  nor has any such Pension  Plan been  amended  since the date of its
most recent  determination  letter or application  therefore in any respect that
would adversely affect its qualification or materially increase its costs.

3.18.(c)  No  Pension  Plan  that  Percon  or any of its  ERISA  Affiliates  (as
hereinafter  defined)  maintains,  or to  which  Percon  or  any  of  its  ERISA
Affiliates  contributed or is or was previously  obligated to contribute,  is or
was subject to Section  412 of the Code or Section 302 or Title IV of ERISA.  An
"ERISA  Affiliate"  means any entity  that,  along with  Percon,  ever  formed a
controlled  group of  corporations,  group of trades or businesses  under common
control,  or  affiliated  service  group,  within the  meaning of Code  Sections
414(b), (c), (m) or (o). To the best knowledge of Percon, none of Percon, any of
its subsidiaries, any officer of Percon or any of its subsidiaries or any of the
Benefit Plans, or any trusts created thereunder, or any trustee or administrator
thereof,  has engaged in a "prohibited  transaction" (as such term is defined in
Section  406 of ERISA  or  Section  4975 of the  Code) or any  other  breach  of
fiduciary  responsibility  that could subject Percon, any of its subsidiaries or
any  officer  of  Percon or any of its  subsidiaries  to the tax or  penalty  on
prohibited  transactions  imposed by such Section 4975 or to any liability under
Section 502(i) or (1) of ERISA.
<PAGE>

3.18.(d)  With respect to any Benefit Plan that is an employee  welfare  benefit
plan, except as disclosed in Schedule 3.18, (i) no such benefit plan is unfunded
or funded  through a welfare  benefits  fund, as such term is defined in Section
419(e) of the Code,  (ii) each such Benefit Plan that is a group health plan, as
such term is defined in Section 5000(b)(1) of the Code, complies in all material
respects with the applicable  requirements of Section 4980(B)(f) of the Code and
Section  186z(b)(1) of the Social  Security Act and (iii) each such Benefit Plan
(including  any such Plan covering  retirees or other former  employees)  may be
amended  or  terminated  without  material  liability  to  Percon  or any of its
subsidiaries on or at any time after the Effective Time.

3.18.(e) Except as disclosed on Schedule 3.18, each Benefit Plan conforms in all
material  respects in form and operation to all applicable laws and regulations,
and all reports or  information  relating to such  Benefit  Plan  required to be
filed with any governmental entity or disclosed to participants have been timely
filed and disclosed. Except as disclosed on Schedule 3.18, no Benefit Plan holds
any employer  security or employer real  property  within the meaning of Section
407 of ERISA.

3.18.(f)  Except  as  disclosed  on  Schedule  3.18,  the  consummation  of  the
transactions  contemplated by this Agreement will not (i) entitle any current or
former  employee  of  Percon  or  any  subsidiary   thereof  to  severance  pay,
unemployment  compensation  or any other payment or (ii)  accelerate the time of
payment or  vesting,  or  increase  the amount of  compensation  due to any such
employee or former employee, except as required under Section 411 of the Code.

3.18.(g)  Except as disclosed on Schedule  3.18,  neither  Percon nor any of its
subsidiaries  has announced a plan to create or a legally binding  commitment to
amend any Benefit Plan or to create any new arrangement  that would be a Benefit
Plan.

3.18.(h) All  insurance  premiums  with  respect to any Benefit Plan  (including
premiums to the Pension Benefit  Guaranty  Corporation)  have been paid in full.
Except as disclosed on Schedule  3.18,  there are no  retrospective  adjustments
provided for under any insurance  contracts  maintained  pursuant to any Benefit
Plan with  regard  to  policy  years or other  periods  ending on or before  the
Effective Time.

3.18.(i) No Benefit Plan or the deduction of any contributions thereto by Percon
or any of its subsidiaries has been the subject of audit by the Internal Revenue
Service or the Department of Labor,  and no litigation or asserted  claims exist
against Percon or any of its  subsidiaries or any Benefit Plan or fiduciary with
respect  thereto  (other  than such  benefit  claims  as are made in the  normal
operation of a Benefit  Plan).  To the  knowledge of Percon,  there are no facts
that  would  give rise to or could  give rise to any  action,  suit,  grievance,
arbitration or other claim.

3.18.(j)  With  respect  to any  Benefit  Plan  that  covers  current  or former
employees or directors  who are not  residents of the United  States of America,
any references in this Section 3.18 to ERISA,  the Code, or any other applicable
law shall be read to  include  any  applicable  law of  similar  import  for the
jurisdiction in which such individuals reside.
<PAGE>

3.19.    Employment Compensation.

                  Schedule  3.19  contains  a  true  and  correct  list  of  all
employees  to whom  Percon or any of its  subsidiaries  is paying  compensation,
including  bonuses  and  incentives  at an annual  rate in excess of One Hundred
Thousand Dollars ($100,000) for services rendered or otherwise,  and in the case
of  salaried  employees,  such  list  identifies  the  current  annual  rate  of
compensation for each employee and in the case of hourly or commission employees
identifies  certain  reasonable  ranges  of rates and the  number  of  employees
falling within each such range.

3.20.    Percon Board of Directors Action.

                  The Board of Directors of Percon (at a meeting duly called and
held) has by the unanimous vote of all directors (a) determined  that the Merger
is  advisable  and in the best  interests  of Percon and its  shareholders,  (b)
resolved  to  recommend  the  approval of this  Agreement  and the Merger by the
holders of Percon  Common  Stock and directed  that the Merger be submitted  for
consideration  by the  holders of Percon  Common  Stock at a special  meeting of
shareholders  and (c) adopted a  resolution  to elect not to be subject,  to the
extent  permitted by applicable  law, to any state takeover law that may purport
to be  applicable  to the  Merger  and  the  transactions  contemplated  by this
Agreement.

3.21.    Proxy Statement.

3.21.(a) None of the  information  supplied or to be supplied by or on behalf of
Percon for inclusion or incorporation  by reference in the proxy  statement,  in
definitive form,  relating to the Percon Special Meeting (the "Proxy Statement")
will,  at the  date  filed  with the SEC , at the  date it or any  amendment  or
supplement is mailed to the  shareholders of Percon or at the time of the Percon
Special  Meeting,  contain any untrue  statement  of a material  fact or omit to
state any material fact  required to be stated  therein or necessary in order to
make the statements  therein, in light of the circumstances under which they are
made, not misleading.

3.21.(b)  Information provided by and relating to Percon and its subsidiaries in
the Proxy  Statement  will comply as to form in all material  respects  with the
provisions of the the Exchange Act.

3.22.    No Brokers or Finders.

                  With the exception of the engagement of McDonald  Investments,
Inc.,  by  Percon,  none of Percon and its  subsidiaries  has any  liability  or
obligation  to pay any fees or  commissions  to any financial  advisor,  broker,
finder,  or  agent  with  respect  to  the  transactions  contemplated  by  this
Agreement.  Percon  has  provided  PSC  with  a true  and  correct  copy  of the
engagement letter by and among Percon and McDonald Investments, Inc.
<PAGE>

3.23.    Disclosure.

                  All statements and information contained in any certificate or
Disclosure  Schedule  delivered  by or on  behalf  of  Percon  shall  be  deemed
representations and warranties by Percon.

3.24.    Opinion of Financial Advisor.

                  Percon has received the opinion of McDonald Investments, Inc.,
dated the date of this Agreement,  to the effect that the aggregate Merger Price
is fair to the Percon shareholders from a financial point of view, and a copy of
such opinion has been delivered to PSC.

3.25.    Year 2000 Compliance.

3.25.(a) Except as identified on Schedule 3.25,  none of the personal  property,
equipment or assets owned or utilized by Percon and its subsidiaries relating to
their  business,  including  but not  limited to computer  software,  databases,
hardware,  controls and peripherals,  has  characteristics or qualities that may
cause it to fail to (i) operate and  produce  data on and after  January 1, 2000
(including  taking into effect that such year is a leap year), or use data based
on time periods on or after January 1, 2000  (including  taking into effect that
such year is a leap year), or use data based on time periods on or after January
1, 2000 (including  taking into effect that such year is a leap year) accurately
and without delay,  interruption  or error relating to the fact that the time at
which and the date on which such software is operating is on or after 12:00 a.m.
on January 1, 2000 (including  taking into effect that such year is a leap year)
and (ii) accept, calculate,  process, maintain, store and output, accurately and
without  delay,  interruption  or error,  all times or dates,  or both,  whether
before,  on or after 12:00 a.m.  January 1, 2000  (including  taking into effect
that  such  year is a leap  year),  and any  time  periods  determined  or to be
determined based on such times or date or both (a "Year 2000 Defect"). Except as
identified on Schedule 3.25, none of the property or assets owned or utilized by
Percon and its  subsidiaries  relating to their business will fail to perform in
any  material  respect or  require  any  repair,  rewrite,  conversion  or other
adaptation because of, or due in any way to, a Year 2000 Defect.  Percon and its
subsidiaries have no obligations under warranty  agreements,  service agreements
or otherwise with respect to their business to rectify a Year 2000 Defect of any
person or to  indemnify  any  person in the event  Percon  and its  subsidiaries
experience  a Year 2000  Defect.  To the  knowledge  of  Percon,  no  vendors or
suppliers of Percon or its  subsidiaries  may experience a Year 2000 Defect that
could cause a Material Adverse Effect.
<PAGE>

                                   Article 4
                      REPRESENTATIONS AND WARRANTIES OF PSC

        PSC makes the following representations and warranties to Percon:

4.1.     Organization.

                  Each of PSC and Newco is a corporation duly organized, validly
existing,  and in  good  standing  under  the  laws of the  jurisdiction  of its
incorporation.  Each of PSC and Newco has full corporate  power and authority to
own,  operate and lease its properties and to carry on its business as and where
such is now being conducted and to own and use the properties  owned and used by
it.

4.2.     Authorization.

                  PSC and Newco each has full  corporate  power and authority to
execute and deliver this Agreement and the Ancillary  Instruments and to perform
its  obligations  hereunder and  thereunder.  The execution and delivery of this
Agreement and the Ancillary Instruments and the consummation of the transactions
contemplated  hereby  and  thereby  have been  duly  approved  by the  Boards of
Directors of PSC and Newco and by the sole  shareholder  of Newco,  and no other
corporate  proceedings on the part of PSC or its  shareholders  are necessary to
authorize  this Agreement and to consummate the  transactions  so  contemplated.
This  Agreement has been duly executed and  delivered and  constitutes,  and the
Ancillary  Instruments when executed and delivered by PSC will  constitute,  the
valid and legally binding obligation of PSC enforceable in accordance with their
respective terms and conditions.

4.3.     No Violation.

                  Except for such  consents as are  required  under the terms of
indebtedness  of PSC outstanding on the date hereof ("Debt  Consents"),  neither
the  execution  and  delivery  of this  Agreement  nor the  consummation  of the
transactions  contemplated  hereby (a) will violate any  constitution,  statute,
law, ordinance,  rule,  regulation,  order, writ,  injunction,  judgment,  plan,
decree, or other restriction of any government,  governmental agency or court to
which any of PSC and its subsidiaries is subject or any provision of the charter
or bylaws of any of PSC and its  subsidiaries,  (b)  except  for (i)  applicable
requirements of (A) the HSR Act, (B) other state and foreign antitrust laws, (C)
the Exchange Act, (D) the  Securities  Act, and (E) Blue Sky Laws,  and (ii) the
filing  of  Articles  of  Merger   pursuant  to  the  WBCA,   will  require  any
authorization,  consent,  approval,  exemption or other action by,  notice to or
filing with any government or governmental  agency,  or (c) subject to obtaining
the Debt Consents, will violate or conflict with, or constitute a default (or an
event that, with notice or lapse of time, or both,  would  constitute a default)
under,  or will result in the  termination  of, or  accelerate  the  performance
required by, or result in the creation of any lien or security interest upon any
of the  assets of PSC or its  subsidiaries  under any term or  provision  of the
Articles of  Incorporation or By-Laws of PSC or any of its  subsidiaries,  or of
any Contract or  restriction of any kind or character to which any of PSC or any
of its  subsidiaries  is a party or by which PSC or any of its  subsidiaries  is
bound or to which the assets or properties of PSC or any of its subsidiaries may
be bound or affected.
<PAGE>

4.4.     Information.

                  None of the information  supplied or to be supplied by PSC and
Newco in writing  specifically for inclusion in the Proxy Statement will, at the
time filed with the SEC, at the date it or any amendment or supplement is mailed
to shareholders of Percon or at the time of the Percon Special Meeting,  contain
any untrue  statement  of a  material  fact or omit to state any  material  fact
required to be stated therein or necessary in order to make the statements  made
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  Information provided by and relating to PSC and its subsidiaries in
the Proxy  Statement  will comply as to form in all material  respects  with the
provisions of the Exchange Act.

4.5.     Interim Operations of Newco.

                  Newco was formed  solely for the  purpose of  engaging  in the
transactions  contemplated  hereby and has engaged in no business  other than in
connection with such transactions.

4.6.     Capital Resources.

                  PSC  has  sufficient  cash,  or  access  to  cash,  to pay the
aggregate Merger Price.

                                    ARTICLE 5
                                    COVENANTS

5.1.     Interim Operations.

                  During  the  period  from  the date of this  Agreement  to the
Effective  Time,  except as specifically  contemplated by this Agreement,  or as
otherwise approved in advance by PSC in writing:

5.1.(a) Percon will, and will cause each of its  subsidiaries  to, conduct their
respective  businesses  only in, and not take any action except in, the ordinary
and usual course of business and consistent with past practice.  Percon will use
reasonable  efforts to preserve  intact the business  organization of Percon and
each of its subsidiaries, to keep available the service of its and their present
officers and key employees and to preserve the goodwill of those having business
relationships with it or its subsidiaries.

5.1.(b)  Percon will not, and will not permit any of its  subsidiaries  to, make
any change or amendment to their respective articles of incorporation or by-laws
(or comparable governing instruments).
<PAGE>

5.1.(c)  Except for the  issuance of Percon  Common  Stock upon the  exercise of
Options and warrants  outstanding on the date hereof,  Percon will not, and will
not permit any of its  subsidiaries  to, (i) issue or sell any shares of capital
stock  or any  other  securities  of any of  them,  (ii)  issue  any  securities
convertible into or exchangeable for, or options,  warrants to purchase,  scrip,
rights to  subscribe  for,  calls or  commitments  of any  character  whatsoever
relating  to, or enter into any  Contract  with  respect to the issuance of, any
shares of capital stock or any other  securities  of any of them,  (iii) adjust,
split,  combine or reclassify any of their capital stock or other  securities or
make any other  changes  in their  capital  structures,  (iv) take any action to
accelerate  the  vesting of any Options or (v) take any other  action  under the
terms  of the  Option  Plan  or  otherwise  with  respect  to  Options  that  is
inconsistent with the treatment that Section 1.5 contemplates.

5.1.(d) Percon will not and will not permit any of its subsidiaries to, declare,
set aside, pay or make any dividend or other distribution or payment (whether in
cash,  stock or property) with respect to, or purchase or redeem,  any shares of
the capital stock of any of them.

5.1.(e) Percon will not, and will not permit any of its  subsidiaries  to, amend
any Benefit  Plan or to adopt any  arrangement  that would be a Benefit Plan or,
except  pursuant to  collective  bargaining  agreements  as presently in effect,
increase materially the compensation or fringe benefits of any director, officer
or employee or pay any benefit not required by any existing plan or  arrangement
or take any  action or grant any  benefit  not  required  under the terms of any
existing agreements, trusts, plans, funds or other such arrangements, but Percon
may take any such  action as Percon  deems  reasonably  necessary  to respond to
competitive situations if Percon obtains the prior written consent of PSC, which
consent will not be unreasonably withheld.

5.1.(f)  Percon will not,  and will not permit any of its  subsidiaries  to, (a)
assume any  indebtedness  or,  except in the  ordinary  course of  business  for
working capital purposes under facilities existing on the date hereof, incur any
indebtedness  or (b) except in the ordinary  course of business  consistent with
past  practice,  make any  loans,  advances  or  capital  contributions  to,  or
investments  (other  than  short-term  investments  pursuant to  customary  cash
management  systems  of  Percon)  in,  any other  person  other than such of the
foregoing  as are made by Percon  to, in or from a wholly  owned  subsidiary  of
Percon.  Percon will not, and will not permit any of its  subsidiaries to, enter
into any new credit  agreements or enter into any amendments or modifications of
any existing credit agreements.

5.1.(g) Percon will not, and will not permit any of its subsidiaries to, acquire
(i) by merging or consolidating  with, or by purchasing a substantial portion of
the stock or assets of, or by any other manner, any business or any corporation,
partnership,  association or other business  organization or division thereof or
(ii) any assets, except purchases of inventory items or supplies in the ordinary
course of business  consistent  with past practice and capital  expenditures  in
compliance with Section 5.1.(k).

5.1.(h) Percon will not, and will not permit any of its  subsidiaries to, lease,
mortgage or otherwise  encumber or otherwise dispose of any of its properties or
assets,  except sales of inventory in the ordinary course of business consistent
with past practice.
<PAGE>

5.1.(i)  Percon will not, and will not permit any of its  subsidiaries  to, make
any tax election or settle or  compromise  any income tax or other tax liability
or  refund,  but  Percon  may take any such  action as Percon  deems  reasonably
necessary in the ordinary course of business if Percon obtains the prior written
consent of PSC, which consent will not be unreasonably withheld.

5.1.(j)  Percon will not, and will not permit any of its  subsidiaries  to, pay,
discharge or satisfy any claims, liabilities or obligations (absolute,  accrued,
asserted,  unasserted,   contingent  or  otherwise),  other  than  the  payment,
discharge or  satisfaction  in the ordinary  course of business  consistent with
past practice or in accordance  with their terms,  or settle any material claim,
action or proceeding  except in the ordinary course of business  consistent with
past practice.

5.1.(k)  Percon will not, and will not permit any of its  subsidiaries  to, make
any capital  expenditures  from the date of this Agreement to the Effective Time
in an aggregate  amount in excess of twenty-five  percent (25%) of the aggregate
amount  reflected in Percon's  capital  expenditure  budget, a copy of which has
been provided to PSC.

5.1.(l) Percon will not, and will not permit any of its  subsidiaries  to, enter
into or  terminate  any  material  Contract,  or make any change in any material
Contract,  other than renewals of Contracts  without material adverse changes in
terms.

5.1.(m)  Percon  will  not,  and will not  permit  any of its  subsidiaries  to,
implement  or adopt  any  change  in its  accounting  principles,  practices  or
methods, other than as may be required by GAAP.

5.1.(n)  Percon  will  not,  and will not  permit  any of its  subsidiaries  to,
authorize or enter into any agreement to do any of the foregoing.

5.2.     Access and Information.

5.2.(a)  Prior  to  the  Closing,  Percon  will  (and  will  cause  each  of its
subsidiaries  to) afford to PSC and its  representatives  (including  directors,
officers and employees of PSC and its affiliates,  and counsel,  accountants and
other professionals  retained by PSC) such access throughout the period prior to
the Effective Time to its books,  records  (including tax returns),  agreements,
properties  (including  for  purposes  of making  any  reasonable  environmental
investigation), personnel and suppliers as PSC reasonably requests. Percon will,
as part of PSC's due diligence  review,  cause its independent  certified public
accountants  (existing and prior) to make  available to PSC and its  independent
certified  public  accountants the work papers relating to any audit of Percon's
financial statements in the last five years.

5.2.(b) Prior to the Closing,  Percon will  promptly  furnish PSC with copies of
all monthly and other interim financial  statements as the same become available
and shall  cause one or more of its  designated  representatives  to confer on a
regular and frequent basis with representatives of PSC.
<PAGE>

5.2.(c) Prior to the Closing,  Percon will  promptly  notify PSC of any material
change  in its  business  or  operations  and of  any  governmental  complaints,
investigations  or hearings (or  communications  indicating that the same may be
contemplated),  or the institution or, to its knowledge,  the threat of material
Litigation  and shall keep the PSC fully  informed of such events.  Prior to the
Closing, each party will promptly notify the other party of any information that
becomes known to it or any subsidiary that could  reasonably be expected to make
any representation or warranty it has made herein not true or not correct in any
material respect.

5.3.     Certain Filings, Consents and Arrangements.

                  PSC  and  Percon  will  (a)  promptly  make  their  respective
filings,  and will  thereafter  use their  best  efforts  to  promptly  make any
required submissions, under the HSR Act with respect to the Merger and the other
transactions  contemplated  by this Agreement and (b) cooperate with one another
(i) in promptly  determining  whether  any  filings  are  required to be made or
consents, approvals, permits or authorizations are required to be obtained under
any other  federal,  state or foreign  law or  regulation  and (ii) in  promptly
making any such filings, furnishing information required in connection therewith
and  seeking  timely  to  obtain  any  such  consents,   approvals,  permits  or
authorizations.

5.4.     State Takeover Statutes.

                  Percon  will,  upon the  request of PSC,  take all  reasonable
steps to  exempt  Percon  and the  Merger  from the  requirements  of any  state
takeover law by action of Percon's Board of Directors or otherwise.

5.5.     Percon Special Meeting; Proxy Statement.

5.5.(a) Percon, acting through its Board of Directors, shall, in accordance with
applicable Law:

(i)  Duly call,  give notice of, convene and hold a special  meeting of Percon's
     shareholders  (the  "Percon  Special  Meeting")  on the earlier of the date
     proposed by PSC or the date  proposed  by Percon  subject to the consent of
     the other (which  consent shall not be  unreasonably  withheld or delayed),
     which  date  shall in no event be more than  sixty (60) days after the date
     hereof,  for the  purpose  of  considering  and  taking  action  upon  this
     Agreement;   provided,   however,  that  if  the  Securities  and  Exchange
     Commission (the "SEC") reviews the  Preliminary  Filing (as defined below),
     then such  sixty (60) day period  shall be  extended  by the number of days
     during  which  Percon is  awaiting  receipt of SEC  comments  plus five (5)
     business  days to enable Percon to respond to the first set of SEC comments
     and two (2) business  days in each case to enable Percon to respond to each
     subsequent set of SEC comments;
<PAGE>

(ii) Promptly  (x) prepare and file with the SEC a  preliminary  information  or
     proxy statement  relating to the Merger and this Agreement that complies in
     all material respects with the provisions of applicable  federal securities
     laws (the "Preliminary  Filing"),  (y) after consultation with PSC, respond
     promptly to any comments  made by the SEC with  respect to the  Preliminary
     Filing, and (z) subject to compliance with SEC rules and regulations, cause
     a notice of a special  meeting and the Proxy  Statement to be mailed to the
     shareholders  of Percon no later than the time required by  applicable  Law
     and the articles of incorporation and the bylaws of Percon; and

(iii)Include in the Proxy  Statement the unanimous  recommendation  of the Board
     of Directors of Percon that the shareholders of Percon vote in favor of the
     approval of the Merger and the adoption of this Agreement.

5.5.(b) PSC and Newco will furnish to Percon the information relating to PSC and
Newco required under the Exchange Act to be set forth in the Proxy Statement. No
representation,  warranty  or covenant is made or shall be made herein by PSC or
Newco with respect to information  contained in the Proxy  Statement  other than
information  supplied by PSC and/or Newco in writing  expressly for inclusion in
the Proxy Statement.

5.5.(c)  Percon  shall  consult  with PSC and Newco  with  respect  to the Proxy
Statement (and any  amendments or supplements  thereto) and shall afford PSC and
Newco reasonable  opportunity to comment thereon prior to its finalization.  If,
at any time prior to the Percon Special Meeting,  any event shall occur relating
to Percon or the transactions  contemplated by this Agreement that should be set
forth in an amendment or a supplement to the Proxy  Statement,  then Percon will
promptly notify PSC and Newco of such event in writing. If, at any time prior to
the Percon Special Meeting,  any event shall occur relating to PSC, Newco or the
transactions  contemplated  by this  Agreement  that  should  be set forth in an
amendment  or a  supplement  to the Proxy  Statement,  then PSC and  Newco  will
promptly notify Percon of such event in writing.  In any such case, Percon, with
the cooperation of PSC and Newco,  will promptly prepare and mail such amendment
or supplement,  and Percon shall consult with PSC and Newco with respect to such
amendment or supplement and shall afford PSC and Newco reasonable opportunity to
comment  thereon  prior to such  mailing.  Percon  shall notify PSC and Newco at
least  three  (3) days  prior to the  mailing  of the  Proxy  Statement  (or any
amendment or supplement thereto) to the shareholders of Percon.
<PAGE>

5.6.     Additional Agreements.

                  Subject to the terms and conditions  herein provided,  each of
the parties hereto agrees to use its best efforts to take promptly,  or cause to
be taken,  all  actions  and to do  promptly,  or cause to be done,  all  things
necessary,  proper  or  advisable  under  applicable  laws  and  regulations  to
consummate and make effective the  transactions  contemplated by this Agreement,
including using its best efforts to obtain all necessary actions or non-actions,
extensions,  waivers,  consents and approvals from all  applicable  governmental
agencies  or  authorities,   effect  all  necessary  registrations  and  filings
(including  filings  under the HSR  Act),  lift or  rescind  any  injunction  or
restraining order or other order adversely  affecting the ability of the parties
to  consummate  the  transactions  contemplated  hereby and obtain any  required
contractual  consents.  If, at any time after the Effective  Time, the Surviving
Corporation considers or is advised that any deeds, bills of sale,  assignments,
assurances  or any other  actions or things are  necessary or desirable to vest,
perfect or confirm  of record or  otherwise  in the  Surviving  Corporation  its
right, title or interest in, to or under any of the rights, properties or assets
of Percon and its  subsidiaries  acquired  or to be  acquired  by the  Surviving
corporation  as a result of, or in  connection  with the Merger or  otherwise to
carry out the purposes of this  Agreement,  the  officers  and  directors of the
Surviving Corporation will be authorized to execute and deliver, in the name and
on behalf of Percon and its subsidiaries or otherwise,  as such deeds,  bills of
sale,  assignments  and assurances and to take and do, in the name and on behalf
of Percon and its  subsidiaries or otherwise,  all such other actions and things
as may be necessary or desirable to vest,  perfect or confirm any and all right,
title and  interest in, to and under such  rights,  properties  or assets in the
Surviving Corporation or otherwise to carry out the purposes of this Agreement.

5.7.     Certain Litigation.

                  Percon shall give East the  opportunity  to participate in the
defense or  settlement  of any  litigation  against  Percon or its  officers  or
directors relating to the transactions  contemplated by this Agreement.  No such
settlement  shall be  agreed  to  without  East's  consent  which  shall  not be
unreasonably withheld.

5.8.     Acquisition Proposals.

5.8.(a)  Percon agrees that neither it nor any of its  subsidiaries  shall,  and
that it shall direct and use its best efforts to cause its and its subsidiaries,
employees, agents and representatives (including any investment banker, attorney
or  accountant  retained  by  it  or  any  of  its  subsidiaries)  (Percon,  its
subsidiaries   and   their   officers,   directors,    employees,   agents   and
representatives  being  the  "Percon   Representatives")  not  to,  directly  or
indirectly,  initiate,  solicit, encourage or otherwise facilitate any inquiries
or the making of any proposal or offer with respect to a merger, reorganization,
share exchange,  consolidation or similar transaction involving, or any purchase
of, or tender offer for, any of the assets of it or any of its  subsidiaries  or
its voting securities if, as a result of such transaction,  (i) the shareholders
of  Percon  would not hold more than  ninety-five  percent  (95%) of the  voting
securities  of the  surviving  corporation  or its  ultimate  parent,  (ii)  the
directors of Percon  immediately  prior to completion of such transaction  would
not  constitute  at least  two-thirds of the board of directors of the surviving
corporation or its ultimate parent immediately  following the completion of such
transaction,  or (iii) another  person would acquire  material  assets of Percon
and/or its subsidiaries (any such proposal or offer being  hereinafter  referred
to  as  a  "Percon  Acquisition  Proposal").  Neither  Percon  nor  any  of  its
subsidiaries shall, and Percon shall direct and cause the Percon Representatives
not to,  directly  or  indirectly,  have  any  discussion  with or  provide  any
confidential  information or data to any person relating to a Percon Acquisition
Proposal or engage in any negotiations concerning a Percon Acquisition Proposal,
or  otherwise  facilitate  any effort or attempt to make or  implement  a Percon
Acquisition  Proposal;   provided,  however,  that  nothing  contained  in  this

<PAGE>

Agreement  shall prevent  either Percon or the Percon  Representatives  from (A)
complying  with Rule 14e-2  promulgated  under the Exchange Act with regard to a
Percon  Acquisition  Proposal;  (B) engaging in any  discussions or negotiations
with or providing any  information  to any person in response to an  unsolicited
bona  fide  written  Percon  Acquisition  Proposal  by any such  person;  or (C)
recommending such an unsolicited bona fide written Percon  Acquisition  Proposal
to the  shareholders  if in such case  referred to in clause (B) or (C), (1) the
Board of  Directors  of Percon at a meeting  determines  in good faith (upon the
advice of its  financial  advisor)  that such  Percon  Acquisition  Proposal  is
reasonably  likely to be  completed  taking into  account all legal,  financial,
regulatory and other aspects of the proposal and the person making the proposal,
and would,  if consummated,  result in a transaction  more favorable to Percon's
shareholders from a financial point of view than the transaction contemplated by
this  Agreement  (any such more  favorable  Percon  Acquisition  Proposal  being
referred to in this Agreement as a "Superior Percon Proposal"), (2) the Board of
Directors  of Percon at a meeting  determines  in good  faith upon the advice of
outside  legal  counsel that such action is necessary for the Board of Directors
to comply  with its  fiduciary  duty  under  applicable  law and (3)  Percon (I)
promptly  advises  PSC that it has  received a Superior  Percon  Proposal,  (II)
promptly  discloses to PSC the material terms of the Superior  Percon  Proposal,
and (III) promptly (and in any event before  providing  information)  causes the
offering  party  to  enter  into  a  confidentiality  and  standstill  agreement
substantially  in the  form of the  Confidentiality  Agreement  (as  defined  in
Section 5.9) (provided  that such  confidentiality  agreement  shall not contain
terms that prevent Percon from complying with its obligations under this Section
5.8),  and (IV)  promptly (and in any event upon the request of PSC) advises PSC
of any material developments with respect to the Superior Percon Proposal.

5.8.(b)  Percon  will (i)  immediately  cease  and  cause to be  terminated  any
existing  activities,  discussions or  negotiations  with any parties  conducted
heretofore  with  respect  to any  Percon  Acquisition  Proposal,  (ii) take the
necessary steps to promptly  inform the  individuals or entities  referred to in
the first  sentence of Section 5.8(a) of the  obligations  undertaken in Section
5.8(a) and (iii)  notify PSC  immediately  if any such  inquiries,  proposals or
offers are received by, any such  information  is  requested  from,  or any such
discussions or negotiations are sought to be initiated or continued with, any of
its representatives indicating, in connection with such notice, the name of such
person and the terms and  conditions of any proposals or offers,  and thereafter
shall inform PSC of any material  modification of the terms of any such proposal
or offer or the  withdrawal  thereof.  Percon also agrees that it will  promptly
request each person that has heretofore executed a confidentiality  agreement in
connection with its consideration of any Percon  Acquisition  Proposal to return
all confidential information heretofore furnished to such person by or on behalf
of it or any of its subsidiaries,  but the obligation in this sentence shall not
extend  to  any  Percon  Acquisition  Proposal  if  it  is  an  Excluded  Percon
Acquisition  Proposal (as  hereinafter  defined).  As used herein,  an "Excluded
Percon Acquisition  Proposal" means a Percon Acquisition Proposal if (A) it is a
Percon Acquisition  Proposal only by virtue of clause (i) of subsection 5.8.(a),
(B)  as a  result  of the  transaction  that  the  Percon  Acquisition  Proposal
contemplates,  the  shareholders  of Percon  would  hold more than  seventy-five
percent  (75%) of the voting  securities  of the  surviving  corporation  or its
ultimate  parent and (C) the Percon  Acquisition  Proposal was initiated  before
July 1, 1999 or after the termination of this Agreement.
<PAGE>

5.9.     Confidentiality.

                  Percon  and PSC each  acknowledges  and  confirms  that it has
entered into  Confidentiality  Agreements,  dated July 9, 1999 and July 1, 1999,
respectively (the  "Confidentiality  Agreement"),  that information  provided by
each party  hereto to the other  party  hereto  pursuant  to this  Agreement  is
subject to the terms of the  Confidentiality  Agreement and the  Confidentiality
Agreement shall remain in full force and effect in accordance with its terms.

5.10.    Indemnification; Directors' and Officers' Insurance

5.10.(a) From and after the Effective  Time,  PSC agrees that it will  indemnify
and hold harmless  each present and former  director and officer of Percon (when
acting in such capacity) (each, an "Indemnified  Party" and,  collectively,  the
"Indemnified  Parties")  against  any  costs  or  expenses  (including,  without
limitation, reasonable attorneys' fees, costs of investigation and fees of other
advisers and experts),  judgments, fines, losses, claims, damages or liabilities
(collectively,  "Costs")  incurred in connection with any claim,  action,  suit,
proceeding  or  investigation,   whether  civil,  criminal,   administrative  or
investigative,   including,   without  limitation,   claims,   actions,   suits,
proceedings  or  investigations  by  or on  behalf  of  any  present  or  former
shareholder of Percon, arising out of matters existing or occurring at or before
the  Effective  Time,  whether  asserted  or  claimed  before,  at or after  the
Effective  Time,  to the fullest  extent that Percon  would have been  permitted
under the WBCA and its Articles of Incorporation or Bylaws in effect on the date
hereof to indemnify such person (and PSC shall also advance expenses as incurred
to the fullest extent permitted under  applicable law;  provided that the person
to whom expenses are advanced provides a written  affirmation of his or her good
faith belief that the standard of conduct necessary for indemnification has been
met, and an  undertaking  to repay the advances if it is  ultimately  determined
that the person is not entitled to indemnification).

5.10.(b) Any Indemnified Party wishing to claim indemnification under subsection
(a) of this  Section  5.10,  upon  learning  of any such  claim,  action,  suit,
proceeding or investigation,  shall promptly notify PSC thereof, but the failure
to so  notify  shall  not  relieve  PSC of any  liability  it  may  have  to the
Indemnified Party if the failure does not materially  prejudice the indemnifying
party. In the event of any such claim, action, suit, proceeding or investigation
(whether  arising before or after the Effective  Time), (i) PSC or the Surviving
Corporation shall have the right to assume the defense thereof and PSC shall not
be liable to the Indemnified  Parties for any legal expenses of other counsel or
any  other  expenses   subsequently  incurred  by  the  Indemnified  Parties  in
connection  with  the  defense  thereof,  except  that  if PSC or the  Surviving
Corporation  elects not to assume the  defense  or counsel  for the  Indemnified
Parties advises that there are issues that raise  conflicts of interest  between
PSC or the Surviving  Corporation and the Indemnified  Parties,  the Indemnified
Parties  may  retain  counsel  satisfactory  to them,  and PSC or the  Surviving
Corporation  shall pay all  reasonable  fees and expenses of the counsel for the
Indemnified  Parties  promptly as statements  therefor are  received;  provided,
however,  that PSC shall be obligated pursuant to this subsection (b) to pay for
only one firm of counsel for all Indemnified  Parties in any jurisdiction unless
the use of one counsel for the  Indemnified  Parties  would  present the counsel
with a conflict of interest,  (ii) the Indemnified Parties will cooperate in the
defense of any such matter and (iii) PSC shall not be liable for any  settlement
effected  without its prior written  consent;  and provided,  further,  that PSC
shall not have any obligation  hereunder to any indemnified  Party if and when a
court  of  competent   jurisdiction   shall   ultimately   determine,   and  the
determination   shall   have   become   final  and   non-appealable,   that  the
indemnification  of the Indemnified Party in the manner  contemplated  hereby is
prohibited by applicable law.
<PAGE>

5.10.(c) The Surviving  Corporation shall maintain  Percon's existing  officers'
and  directors'  liability  insurance  for a period of six (6)  years  after the
Effective Time; provided, however, that if the existing officers' and directors'
insurance expires,  is terminated or canceled during such six-year period,  then
the  Surviving  Corporation  will  obtain  officers'  and  directors'  liability
insurance  for the  remainder  of such period of at least the same  coverage and
amounts,  containing terms and conditions that are not less  advantageous to the
Indemnified  Parties  and that is issued by an  insurer  having a  claims-paying
rating at least as good as the rating of the issuer of Percon's existing policy.

5.10.(d) The  provisions of this Section 5.10 are intended to be for the benefit
of, and shall be enforceable  by, each of the Indemnified  Parties,  their heirs
and their representatives.

5.11.    Percon Warrants.

                  As soon as practicable  after the date hereof and prior to the
Effective Time, and in compliance with its obligations  pursuant to the terms of
the  Percon  Warrants,  Percon  shall  provide  each  holder of Percon  Warrants
appropriate  notice so that each holder shall have a reasonable  opportunity  to
exercise  such  holder's  Percon  Warrants and receive the Merger Price for each
Percon Warrant.  To the extent required by the Percon Warrants,  Newco agrees to
assume the obligations of Percon under the Warrants as contemplated by Section 4
of the Percon Warrants.

5.12.    Voting Agreement Matters.

                  If Percon  receives  any  request  on behalf of any party to a
Voting  Agreement to allow a transfer of any Voting Agreement Shares (other than
transfers by gift as  contemplated by the Voting  Agreements),  then Percon will
immediately,  and in any event prior to allowing  such  transfer,  notify PSC of
such request and all relevant  details.  Percon shall not consent to the removal
of the Securities Act Legend from any certificate  representing Voting Agreement
Shares  during  the  term  of  the  respective  Voting  Agreements.  Percon  (i)
acknowledges the existence of the Voting Agreements,  (ii) acknowledges that the
Voting  Agreement Shares are subject to transfer  restrictions  under the Voting
Agreements  and (iii)  agrees  that it will not  hinder or impede in any way the
enforcement of the terms of the Voting Agreements.  Without  limitation,  Percon
will not seek in any manner to  invalidate  any Voting  Agreement,  contest  its
enforceability  or contest the entry of any order  requiring  Percon to take any
action or cease taking any action to facilitate  the  enforcement  of any Voting
Agreement against any holder of Voting Agreement Shares.  However, the foregoing
shall not obligate  Percon to initiate legal action to enforce the  restrictions
on transfer or voting requirements set forth in any Voting Agreement.
<PAGE>

                                   ARTICLE 6
                        Conditions to Obligation to Close

6.1. Conditions to Obligation of PSC and Newco.

                  The   obligations   of  PSC  and  Newco  to   consummate   the
transactions  to be performed by them in connection with the Closing are subject
to satisfaction or waiver of the following conditions:

6.1.(a)  Representations  True. The  representations and warranties set forth in
Article 3 above shall be true and correct in all material respects when made and
at and as of the Closing  Date  (except to the extent such  representations  and
warranties speak as of an earlier date).

6.1.(b)  Covenants.  Percon shall have  performed  and complied  with all of its
covenants hereunder in all material respects through the Closing.

6.1.(c) No  Proceedings.  No action,  suit,  or  proceeding  shall be pending or
threatened before any court or  quasi-judicial  or administrative  agency of any
federal,  state, local, or foreign jurisdiction or before any arbitrator wherein
an unfavorable injunction,  judgment, order, decree, ruling, or charge would (i)
prevent consummation of any of the transactions  contemplated by this Agreement,
(ii)  cause  any  of the  transactions  contemplated  by  this  Agreement  to be
rescinded  following  consummation,  (iii)  affect  adversely  the  right of the
Surviving   Corporation  to  own  the  former  assets,  to  operate  the  former
businesses,  and to control the former  subsidiaries  of Percon,  or (iv) affect
adversely  the  right of any of the  former  subsidiaries  of  Percon to own its
assets and to operate its businesses (and no such injunction,  judgment,  order,
decree, ruling, or charge shall be in effect).

6.1.(d) Shareholder Approval.  This Agreement and the Merger shall have received
approval by the Percon Requisite Shareholder Vote.

6.1.(e) HSR Waiting Period.  All applicable  waiting periods (and any extensions
thereof) under the HSR Act shall have expired or otherwise  been  terminated and
the  parties  shall  have  received  all  other  authorizations,  consents,  and
approvals of governments and  governmental  agencies  referred to in Section 3.4
and Section 4.3.

6.1.(f)  Consents.  Percon and its  subsidiaries  shall have procured all of the
third party consents  specified pursuant to Section 3.4 that are material to the
operation of the business of Percon and its subsidiaries.

6.1.(g)  Material  Adverse  Change.  There shall have been no  material  adverse
change from the date hereof in the business, condition (financial or otherwise),
operations or prospects of Percon,  except  changes  contemplated,  permitted or
required by this Agreement.
<PAGE>

6.1.(h)   Officer's   Certificate.   Percon  shall  have   delivered  to  PSC  a
certification  of one of its  executive  officers to the effect that each of the
conditions specified in Section 6.1(a)-(d) and (g) is satisfied in all respects.

6.1.(i)  Noncompetition  Agreements.  Michael P. Coughlin,  Andy J. Storment and
Arlen I. Prentice shall have executed and delivered Noncompetition Agreements in
substantially the form that PSC has presented to them on the date hereof.

6.1.(j)  Employment/Consulting   Agreements.  Michael  P.  Coughlin  shall  have
executed and delivered a Consulting  Agreement  and Andy J. Storment  shall have
executed and delivered an Employment  Agreement,  in each case in  substantially
the form that PSC has presented to them on the date hereof.

6.1.(k) Consents. PSC shall have obtained all of the Debt Consents.

6.1.(l)  Other  Matters.  All actions to be taken by Percon in  connection  with
consummation  of the  transactions  contemplated  hereby  and all  certificates,
opinions,  instruments,  and other documents required to effect the transactions
contemplated hereby shall be satisfactory in form and substance to PSC.

6.2.     Conditions to Obligations of Percon.

                  The obligation of Percon to consummate the  transactions to be
performed by it in  connection  with the Closing is subject to  satisfaction  or
waiver of the following conditions:

6.2.(a)  Representations  True. The  representations and warranties set forth in
Article 4 above shall be true and correct in all material respects when made and
at and as of the Closing  Date  (except to the extent such  representations  and
warranties speak as of an earlier date).

6.2.(b)  Covenants.  PSC  shall  have  performed  and  complied  with all of its
covenants hereunder in all material respects through the Closing.

6.2.(c) No Proceedings.  No injunction,  judgment,  order,  decree,  ruling,  or
charge shall be in effect under any action, suit, or proceeding before any court
or  quasi-judicial  or administrative  agency of any federal,  state,  local, or
foreign jurisdiction or before any arbitrator that (i) prevents  consummation of
any of the  transactions  contemplated by this Agreement or (ii) would cause any
of the  transactions  contemplated  by this Agreement to be rescinded  following
consummation.

6.2.(d) Shareholder Approval.  This Agreement and the Merger shall have received
approval by the Percon Requisite Shareholder Vote.

6.2.(e)   Hart-Scott-Rodino   Act.  All  applicable  waiting  periods  (and  any
extensions  thereof)  under the HSR Act shall  have  expired or  otherwise  been
terminated and the parties hereto shall have received all other  authorizations,
consents, and approvals of governments and governmental agencies.
<PAGE>

6.2.(f)   Officer's   Certificate.   PSC  shall  have   delivered  to  Percon  a
certification  of one of its  executive  officers to the effect that each of the
conditions specified above in Section 6.2(a)-(c) is satisfied in all respects.

6.2.(g)  Other  Matters.  All  actions  to be  taken by PSC in  connection  with
consummation  of the  transactions  contemplated  hereby  and all  certificates,
opinions,  instruments,  and other documents required to effect the transactions
contemplated  hereby shall be reasonably  satisfactory  in form and substance to
Percon.

                                    ARTICLE 7
                                   Termination

7.1.     Termination by Mutual Consent.

                  This  Agreement  may  be  terminated  and  the  Merger  may be
abandoned  at any time  prior to the  Effective  Time,  whether  before or after
receipt of approval by the Percon Requisite  Shareholder Vote, by mutual written
consent  of  Percon  and PSC  following  action  of their  respective  Boards of
Directors.

7.2.     Termination by Either PSC or Percon.

                  This  Agreement  may  be  terminated  and  the  Merger  may be
abandoned  at any time prior to the  Effective  Time,  by action of the Board of
Directors  of  either  PSC or  Percon,  if (a) the  Merger  shall  not have been
consummated  by May 10,  2000 (the  "Termination  Date"),  whether  such date is
before or after the date of approval  by the  shareholders  of Percon,  (b) at a
meeting  of  the  shareholders  of  Percon  duly  convened  therefor  and at any
adjournment or postponement  thereof, this Agreement shall have failed to obtain
approval by the Percon Requisite  Shareholder Vote, or (c) any order permanently
restraining,  enjoining,  or otherwise  prohibiting  consummation  of the Merger
shall become final and  non-appealable  (whether before or after the adoption or
approval by the shareholders of Percon);  provided,  that the right to terminate
this Agreement pursuant to clause (a) or (b) above shall not be available to any
party that has  breached  in any  material  respect its  obligations  under this
Agreement in any manner that shall have  contributed  proximately to the failure
of the Merger to be consummated.
<PAGE>

7.3.     Termination by Percon.

                  This  Agreement  may  be  terminated  and  the  Merger  may be
abandoned  at any time  prior to the  Effective  Time,  whether  before or after
receipt of approval by the Percon Requisite  Shareholder  Vote, by action of the
Board of Directors of Percon:

7.3.(a)  So long as Percon  has not  breached  this  Agreement  in any  material
respect, if (i) the Board of Directors of Percon,  acting in good faith and upon
the advice of its financial advisor, determines that a transaction constitutes a
Superior  Percon  Proposal and Percon desires to enter into a binding  agreement
with respect  thereto,  (ii) PSC does not,  within seven (7) business days after
receipt of Percon's  written  notification of its desire to enter into a binding
agreement for a Superior  Percon  Proposal,  the terms of which are specified in
such  notice,  make a  competing  offer  other  than an offer  that the Board of
Directors  of Percon  determines,  in good  faith  after  consultation  with its
financial  advisors,  is not at least as  favorable,  from a financial  point of
view, to the shareholders of Percon as the Superior Percon Proposal,  (iii) upon
such date of termination  Percon enters into a binding agreement with respect to
such Superior Percon  Proposal,  and (iv) Percon pays to PSC the termination fee
set forth in Section  7.5(b).  Percon shall notify PSC promptly if its desire to
enter into a written agreement  referred to in its notification  shall change at
any time after giving such notification; or

7.3.(b) If (i) there has been a change,  event,  development  or  combination of
changes,  events or  developments  that would result in a failure of a condition
set forth in Section 6.2 and (ii) such  failure  cannot be or is not cured prior
to the Termination Date.

7.4.     Termination by PSC.

                  This  Agreement  may  be  terminated  and  the  Merger  may be
abandoned  at the time  prior to the  Effective  Time,  whether  before or after
receipt of approval by the Percon Requisite  Shareholder  Vote, by action of the
Board of  Directors  of PSC if (a) the Board of  Directors  of Percon shall have
withdrawn or  adversely  modified  its  approval or  recommendation  to Percon's
shareholders of this  Agreement,  failed to include such  recommendation  in the
Proxy  Statement  or failed to  reconfirm  such  recommendation  within five (5)
business days after a written  request by PSC to do so, (b) (i) there has been a
change,  event,  development or combination of changes,  events or  developments
that would result in a failure of a condition  set forth in Section 6.1 and (ii)
such  failure  cannot  be or is not cured  prior to the  Termination  Date,  (c)
Percon's  board of directors  shall have  approved or publicly  recommended  any
Percon  Acquisition  Proposal,  (d) Percon shall have entered into any letter of
intent or any Contract  accepting a Percon Acquisition  Proposal,  (e) Percon or
any Percon  Representative shall violate Section 5.8(b) or shall take any of the
actions  that would be  proscribed  by Section  5.8(a) or (f) a tender  offer or
exchange  offer for  outstanding  shares of capital stock of Percon is commenced
prior to the  Effective  Time and the  Board of  Directors  of  Percon  fails to
recommend against  acceptance of such tender offer or exchange offer by Percon's
shareholders.

7.5.     Effect of Termination and Abandonment.

7.5.(a) In the event of termination of this Agreement and the abandonment of the
Merger  pursuant to this Article 7, this  Agreement  (other than as set forth in
this  Section  7.5 and Section  8.1) shall  become void and of no effect with no
liability on the part of any party hereto (or of any of its directors, officers,
employees,  agents,  legal or  financial  advisors  or  other  representatives);
provided,  however,  no such termination shall relieve any party hereto from any
obligation to pay, if applicable, the termination fee pursuant to Section 7.5(b)
or 7.5(c).
<PAGE>

7.5.(b)  If the Merger is not consummated and

(i)  at a meeting of the  shareholders  of Percon duly convened  therefor and at
     any adjournment or postponement  thereof,  this Agreement shall have failed
     to receive the Percon  Requisite  Shareholder  Vote and within  twelve (12)
     months after the date hereof Percon shall have entered into an agreement to
     consummate or has consummated a transaction  that would constitute a Percon
     Acquisition  Proposal if it were the  subject of a proposal  (other than an
     Excluded Percon Acquisition Proposal), or

(ii) this Agreement is terminated by Percon pursuant to Section 7.3(a), or

(iii)prior to the termination of this  Agreement,  (A) the Board of Directors of
     Percon  shall  have  withdrawn  or  adversely   modified  its  approval  or
     recommendation  to  Percon's  shareholders  of this  Agreement,  failed  to
     include such  recommendation  in the Proxy Statement or failed to reconfirm
     such  recommendation  within five (5) business days after a written request
     by PSC to do so, (B)  Percon's  board of directors  shall have  approved or
     publicly recommended any Percon Acquisition Proposal, (C) Percon shall have
     entered  into any  letter  of  intent or any  Contract  accepting  a Percon
     Acquisition  Proposal,  (D) if Percon or any  Percon  Representative  shall
     violate  Section  5.8(b) or shall  take any of the  actions  that  would be
     proscribed by Section  5.8(a),  or (E) a tender offer or exchange offer for
     outstanding  shares of capital  stock of Percon is  commenced  prior to the
     Effective  Time and the Board of  Directors  of Percon  fails to  recommend
     against  acceptance  of such  tender  offer or  exchange  offer by Percon's
     shareholders, or

(iv) there has been a willful and  intentional  breach of this  Agreement on the
     part of Percon,

then Percon shall promptly, but in no event later than (I) if the fee is payable
other than pursuant to clause (i) to this Section 7.5(b), two (2) days after the
date of termination of this Agreement or (II) if the fee is payable  pursuant to
clause (i) to this Section 7.5(b), the earlier of the date Percon enters into an
agreement to consummate or the date Percon  consummates a transaction that would
constitute  a  Percon  Acquisition   Proposal,   pay  PSC  Two  Million  Dollars
($2,000,000) plus the out-of-pocket expenses PSC has incurred in connection with
the  transactions  contemplated  hereby  (not to exceed  Four  Hundred  Thousand
Dollars  ($400,000)),  payable by wire transfer of immediately  available funds.
Notwithstanding the foregoing,  no such fee shall be payable if PSC has breached
this Agreement in any material respect.  Percon acknowledges that the agreements
contained  in this  Section  7.5(b)  are an  integral  part of the  transactions
contemplated by this Agreement and that, without these agreements, PSC and Newco
would  not enter  into  this  Agreement;  accordingly,  if  Percon  fails to pay
promptly the amount due pursuant to this Section  7.5(b) and, in order to obtain
such payment,  PSC or Newco commences a suit that results in a judgment  against
Percon for the fee set forth in this  subsection  (b),  then Percon shall pay to
PSC and Newco their costs and expenses (including attorneys' fees) in connection
with such suit,  together  with  interest  on the amount of the fee at the prime
rate of Chase in effect on the date such payment was required to be made.
<PAGE>

7.5.(c)  If the  Merger is not  consummated  and  there  has been a willful  and
intentional  breach  of  this  Agreement  on the  part of PSC,  then  PSC  shall
promptly,  but in no event later than two (2) days after the date of termination
of this  Agreement,  pay  Percon  One  Million  Dollars  ($1,000,000)  plus  the
out-of-pocket  expenses Percon has incurred in connection with the  transactions
contemplated  hereby (not to exceed Four Hundred Thousand  Dollars  ($400,000)),
payable by wire transfer of immediately  available  funds.  Notwithstanding  the
foregoing, no such fee shall be payable if Percon has breached this Agreement in
any material  respect or if any other  condition to the  obligations  of PSC and
Newco set forth in Section 6.1 has not been satisfied. PSC acknowledges that the
agreements  contained  in  this  Section  7.5(c)  are an  integral  part  of the
transactions  contemplated by this Agreement and that, without these agreements,
Percon  would not enter into this  Agreement;  accordingly,  if PSC fails to pay
promptly the amount due pursuant to this Section  7.5(c) and, in order to obtain
such payment, Percon commences a suit that results in a judgment against PSC for
the fee set forth in this subsection (c), then PSC shall pay to Percon its costs
and expenses (including  attorneys' fees) in connection with such suit, together
with  interest  on the amount of the fee at the prime rate of Chase in effect on
the date such payment was required to be made.

                                    ARTICLE 8
                                  Miscellaneous

8.1.     Survival.

                  This  Article 8 and the  agreements  of PSC,  Newco and Percon
contained  in Sections 5.9 shall  survive the  consummation  of the Merger.  All
other  representations,  warranties,  covenants and agreements in this Agreement
shall not survive the consummation of the Merger.

8.2.     Press Releases and Public Announcements.

                  Upon execution of this Agreement,  Percon and PSC will issue a
joint press release. Neither Percon nor PSC will issue or approve any other news
release or other  announcement  concerning  the  transaction  without  the prior
approval of the other as to the  contents of the  announcement  and its release,
which approval will not be unreasonably withheld,  unless and only to the extent
that a party makes such  disclosure  (after making  reasonable  efforts to avoid
such disclosure and after advising and consulting with the other party about its
intent to make, and the proposed  contents of, such disclosure) that is, in such
party's  reasonable  judgment,  required by applicable  United States securities
laws.
<PAGE>

8.3.     No Third Party Beneficiaries.

                  This  Agreement  shall not confer any rights or remedies  upon
any person other than the parties and their respective  successors and permitted
assigns and the holders of Options as described in Section 1.5.

8.4.     Entire  Agreement.

                  This Agreement  (including the Ancillary  Instruments  and the
other documents referred to herein) constitutes the entire agreement between the
parties and supersedes and prior understandings,  agreements, or representations
by or between the  parties,  written or oral,  to the extent they related in any
way to the subject matter hereof.

8.5.     Succession and Assignment.

                  This Agreement  shall be binding upon and inure to the benefit
of the  parties  named  herein and their  respective  successors  and  permitted
assigns.  No party  may  assign  either  this  Agreement  or any of its  rights,
interests,  or obligations  hereunder  without the prior written approval of the
other party.

8.6.     Counterparts.

                  This  Agreement  may be executed in one or more  counterparts,
each of which  shall be  deemed  an  original  but all of  which  together  will
constitute one and the same instrument.

8.7.     Headings.

                  The section headings  contained in this Agreement are inserted
for  convenience   only  and  shall  not  affect  in  any  way  the  meaning  or
interpretation of this Agreement.

8.8.     Notices.

                  All   notices,   requests,    demands,   claims,   and   other
communications hereunder will be in writing. Any notice, request, demand, claim,
or other  communication  hereunder  shall be deemed  duly given if (and then two
business days after) it is sent by registered or certified mail,  return receipt
requested, postage prepaid, and addressed :o the intended recipient as set forth
below:

                           If to Percon:

                           Percon Incorporated
                           1800 Millrace Drive
                           Eugene, Oregon  97403
                           Attention:  Chief Executive Officer
<PAGE>

                           Copy to:

                           John R. Thomas
                           Stoel Rives LLP
                           900 S.W. Fifth Avenue, Suite 2600
                           Portland, Oregon  97204

                           If to PSC or Newco:

                           PSC Inc.
                           675 Basket Road
                           Webster, New York 14580
                           Attention:  Elizabeth J. McDonald

                           Copy to:

                           Patrick G. Quick
                           Foley & Lardner
                           777 East Wisconsin Ave.
                           Milwaukee, Wisconsin  53202

Any party may send any notice,  request,  demand,  claim, or other communication
hereunder  to the  intended  recipient  at the address set forth above using any
other means (including personal delivery,  expedited courier, messenger service,
telecopy,  telex,  ordinary  mail,  or  electronic  mail),  but no such  notice,
request, demand, claim, or other communication shall be deemed to have been duly
given  unless and until it actually is received by the intended  recipient.  Any
Party may change the address to which notices,  requests,  demands,  claims, and
other  communications  hereunder  are to be  delivered by giving the other Party
notice in the manner herein set forth.

8.9.     Governing Law.

                  This   Agreement   shall  be  governed  by  and  construed  in
accordance with the domestic laws of the State of New York without giving effect
to any choice or conflict of law  provision or rule (whether of the State of New
York or any other  jurisdiction) that would cause the application of the laws of
any jurisdiction other than the State of New York; provided,  however,  that the
WBCA shall apply to the extent required.
<PAGE>

8.10.    Amendments and Waivers.

                  The parties may mutually amend any provision of this Agreement
at any time prior to the Effective  Time with the prior  authorization  of their
respective boards of directors;  provided,  however, that any amendment effected
subsequent to shareholder approval will be subject to the restrictions contained
in the WBCA.  No amendment of any  provision  of this  Agreement  shall be valid
unless the same shall be in writing and signed by both of the parties. No waiver
by any  Party of any  default,  misrepresentation,  or  breach  of  warranty  or
covenant hereunder, whether intentional or not, shall be deemed to extend to any
prior or  subsequent  default,  misrepresentation,  or  breach  of  warranty  or
covenant  hereunder  or effect in any way any  rights  arising  by virtue of any
prior or subsequent such occurrence.

8.11.    Severability.

                  Any term or  provision  of this  Agreement  that is invalid or
unenforceable in any situation in any jurisdiction shall not affect the validity
or  enforceability  of the remaining terms and provisions hereof or the validity
or  enforceability  of the offending term or provision in any other situation or
in any other jurisdiction.

8.12.    Expenses.

                  Each of the  parties  will  bear its own  costs  and  expenses
(including  legal fees and expenses)  incurred in connection with this Agreement
and the transactions  contemplated hereby,  except as otherwise  contemplated by
Section 7.5.

8.13.    Construction.

                  The parties have  participated  jointly in the negotiation and
drafting  of  this  Agreement.   If  an  ambiguity  or  question  of  intent  or
interpretation  arises,  then this  Agreement  shall be  construed as if drafted
jointly  by the  parties  and no  presumption  or  burden of proof  shall  arise
favoring  or  disfavoring  any party by virtue of the  authorship  of any of the
provisions of this  Agreement.  Any reference to any federal,  state,  local, or
foreign  statute  or law  shall  be  deemed  also  to  refer  to all  rules  and
regulations promulgated  thereunder,  unless the context otherwise requires. The
word "including" shall mean including without limitation.
<PAGE>
8.14.  Incorporation of Schedules.

     The Exhibits and Schedules  identified in this  Agreement are  incorporated
herein by reference and made a part
hereof.

     IN WITNESS  WHEREOF,  the parties hereto have executed this Agreement as of
the date first above written. This Agreement may be executed in counterparts.

                           PERCON INCORPORATED


                           By:  __________________________________________
                           Title:  _______________________________________


                           PSC INC.


                           By:  __________________________________________
                           Title:  _______________________________________




                           WEST ACQUISITION CORP.


                           By:  ____________________________________________
                           Title:  _________________________________________



                                VOTING AGREEMENT


                  THIS  VOTING  AGREEMENT  dated as of  November  9,  1999  (the
"Agreement"),  is  entered  into by and  between  PSC Inc.  ("PSC"),  a New York
corporation, and Prentice Family Partnership ("Shareholder").

                              W I T N E S S E T H :

                  WHEREAS,  concurrent  with the  execution  of this  Agreement,
Percon  Incorporated,   a  Washington  corporation  ("Percon"),   PSC  and  West
Acquisition Corp. ("Newco"), a wholly owned subsidiary of PSC, have entered into
an  Agreement  and Plan of Merger (the  "Merger  Agreement"),  pursuant to which
Newco will merge with and into Percon (the "Merger");

                  WHEREAS, upon the consummation of the Merger, Shareholder will
receive  $15.00 per share in cash in exchange for shares of Percon common stock,
without par value (the "Percon Common  Stock"),  including all of the Shares (as
defined  below)   Beneficially  Owned  (as  defined  in  Section  1  hereof)  by
Shareholder;

                  WHEREAS, as of the date hereof,  Shareholder is the Beneficial
Owner (as defined in Section 1 hereof) of the number of shares of Percon  Common
Stock set  forth on the  signature  page  hereto  (the  "Existing  Shares,"  and
together with any shares of Percon Common Stock  acquired by  Shareholder in any
capacity after the date hereof and prior to the termination of this Agreement by
means of purchase, dividend,  distribution,  exercise of options or other rights
to acquire Percon Common Stock or in any other way, the "Shares");

                  WHEREAS,  PSC is  unwilling  to expend the  substantial  time,
effort and expense  necessary to implement  the proposed  acquisition  of Percon
unless Shareholder enters into this Agreement with PSC; and

                  WHEREAS,  Shareholder believes it is in his best interest,  as
well as the best  interest  of  Percon,  for PSC and  Percon to  consummate  the
Merger.

                  NOW,   THEREFORE,   in  consideration  of  the  covenants  and
agreements of the parties herein  contained and as an inducement to PSC to incur
the  expenses  associated  with the Merger the parties  hereto,  intending to be
legally bound, hereby agree as follows:

1.       Definitions.  For purposes of this Agreement:

a.   "Beneficially  Owned"  or  "Beneficial   Ownership"  with  respect  to  any
     securities shall mean having "beneficial  ownership" of such securities (as
     determined  pursuant to Rule 13d-3  under the  Securities  Exchange  Act of
     1934,  as  amended  (the  "Exchange  Act")),   including  pursuant  to  any
     agreement, arrangement or understanding, whether or not in writing. Without
     duplicative counting of the same securities by the same holder,  securities
     Beneficially  Owned by a Person  (as  hereinafter  defined)  shall  include
     securities  Beneficially  Owned by all other  Persons with whom such Person
     would  constitute a "group"  within the meaning of Section  13(d)(3) of the
     Exchange Act.
<PAGE>

b.   "Person"  shall  mean  an  individual,  corporation,  partnership,  limited
     liability  company,  joint  venture,  association,   trust,  unincorporated
     organization or other entity.

c.   Capitalized  terms used and not defined  herein  shall have the  respective
     meanings ascribed to them in the Merger Agreement.

2. Representations and Warranties.  Shareholder represents that: (a) Shareholder
has the complete and unrestricted  power and unqualified right to enter into and
perform  the  terms  of  this  Agreement;  (b)  if  Shareholder  is  an  entity,
Shareholder  has full power and authority to execute and deliver this  Agreement
and to perform its obligations hereunder, and the execution and delivery of this
Agreement  and the  consummation  of the  transactions  contemplated  hereby  by
Shareholder  have been duly  authorized and approved by all requisite  action on
the part of Shareholder and its managers,  partners  and/or equity holders;  (c)
this  Agreement  constitutes  a valid  and  binding  agreement  of  Shareholder,
enforceable  against Shareholder in accordance with its terms; (d) except as set
forth on the signature page hereto,  Shareholder  owns the Existing  Shares free
from  any  liens  or  encumbrances  of any  kind or  nature,  has the  sole  and
unrestricted voting power with respect to such Existing Shares and such Existing
Shares are all of the shares of Percon Common Stock directly or indirectly  held
or  otherwise  Beneficially  Owned  by  Shareholder;  and (e)  the  certificates
representing the Existing Shares include a restrictive legend to the effect that
the shares may not be  transferred  unless the transfer is registered  under the
Securities  Act of 1933,  as amended,  or Percon is satisfied  that an exemption
from registration under the Securities Act of 1933, as amended, is available.

3. Voting Agreement;  Proxy.  Shareholder shall vote or cause to be voted all of
the  Shares  (a) in favor of the Merger and the  approval  and  adoption  of the
Merger  Agreement  at every  meeting  of  shareholders  of Percon at which  such
matters are considered and at every adjournment or postponement  thereof and (b)
against any Percon Acquisition  Proposal at every meeting of the shareholders of
Percon at which such matters are  considered and at every  adjournment  thereof.
Shareholder  shall  deliver to PSC  immediately  upon  request  therefor a proxy
substantially  in the form  attached  hereto as Exhibit A, which  proxy shall be
irrevocable  to the extent  permitted  by law  (except  that such proxy shall be
deemed automatically  revoked upon a termination of this Agreement in accordance
with Section 17), with the total number of Shares correctly indicated thereon.

4. No  Transfer.  Shareholder  shall not sell,  transfer,  pledge,  encumber  or
otherwise dispose of shares of Percon Common Stock to any third party unless, as
a condition of such transfer,  sale,  pledge,  encumbrance or other disposition,
the third party shall execute a voting  agreement in form acceptable to PSC (and
substantially  in the form of this Agreement) and such voting agreement shall be
deemed a supplement to this Agreement to which all shares of Percon Common Stock
then  owned or  thereafter  acquired  by the  third  party  transferee  shall be
subject.
<PAGE>

5. No Solicitation.  Shareholder hereby agrees, in the capacity as a shareholder
of Percon, that until this Agreement is terminated in accordance with its terms,
neither Shareholder nor any affiliates, representatives or agents shall (and, if
Shareholder is a corporation,  partnership,  trust or other entity,  Shareholder
shall cause its officers,  directors,  partners, and employees,  representatives
and agents,  including  but not limited to,  investment  bankers,  attorneys and
accountants,  not to), directly or indirectly, take any action that, if taken by
Percon, would violate Section 6.8 of the Merger Agreement.

6. Other Agreements. Shareholder hereby agrees to execute and deliver at Closing
(a) the  Noncompetition  Agreement  referenced  in Section  6.1(i) of the Merger
Agreement,  (b) the  Employment  or Consulting  Agreement  referenced in Section
6.1(j) of the Merger Agreement and (c) a general release of Shareholder in favor
of Percon  and its  affiliates  in  substantially  the form  attached  hereto as
Exhibit B. Shareholder acknowledges that Percon will publish and disclose in the
Proxy  Statement (as defined in the Merger  Agreement)  (including all documents
and schedules  filed with the SEC)  Shareholder's  identity and ownership of the
Shares and the nature of its commitments,  arrangements and understandings under
this Agreement.

7. No  Ownership  Interest.  Except as  expressly  set forth in this  Agreement,
nothing contained in this Agreement shall be deemed to vest in PSC any direct or
indirect ownership or incidence of ownership of or with respect to any shares of
Percon Common Stock. All rights, ownership and economic benefits of and relating
to the Shares  shall  remain and  belong to  Shareholder,  and PSC shall have no
authority  to  manage,  direct,  superintend,   restrict,  regulate,  govern  or
administer  any of the policies or operations of Percon or exercise any power or
authority to direct  Shareholder  in the voting of any of the Shares,  except as
otherwise  expressly  provided  herein,  or the  performance  of his  duties  or
responsibilities as a shareholder of Percon.

8. No Voting  Trusts.  Shareholder  agrees that  Shareholder  will not, nor will
Shareholder permit any entity under Shareholder's control to, deposit any of the
Shares  in a  voting  trust  or  subject  any of the  Shares  to any  agreement,
arrangement  or  understanding   with  respect  to  the  voting  of  the  Shares
inconsistent  with this  Agreement.  Any such  action or inaction on the part of
Shareholder in violation of the foregoing  provision shall be automatically null
and void.

9. Specific  Performance and Remedies.  The parties hereto  acknowledge  that it
will be impossible  to measure in money the damage to the other  party(ies) if a
party hereto fails to comply with the obligations  imposed by this Agreement and
that,  in the  event of such  failure,  the  other  party(ies)  will not have an
adequate remedy at law or in damages. Accordingly, each party hereto agrees that
injunctive  relief or other equitable  remedy, in addition to remedies at law or
in damages, is the appropriate remedy for any such failure. No party will oppose
the granting of injunctive  relief or other  equitable  remedy on the basis that
the other  party(ies)  have an adequate  remedy at law. Each party hereto agrees
that it will not seek, and agrees to waive any requirement  for, the securing or
posting of a bond in connection with any other party's seeking or obtaining such
equitable  relief.  In addition to all other rights or remedies  which any party
hereto may have against any other party  hereto who defaults in the  performance
of such party's obligations under this Agreement, such defaulting party shall be
liable to the  nondefaulting  party for all litigation costs and attorneys' fees
incurred by the  nondefaulting  party(ies) in connection with the enforcement of
any of the  nondefaulting  party's  rights or remedies  against  the  defaulting
party.
<PAGE>

10.  Amendment and  Modification.  This  Agreement  may be amended,  modified or
supplemented  at any  time  only by the  written  approval  of  such  amendment,
modification or supplement by Percon, Shareholder and PSC.

11.  Entire  Agreement.  This  Agreement and the Merger  Agreement  evidence the
entire  agreement among the parties hereto with respect to the matters  provided
for herein,  and there are no  agreements,  representations  or warranties  with
respect to the matters provided for herein other than those set forth herein.

12.  Severability.  The parties  agree that if any  provision of this  Agreement
shall  under any  circumstances  be deemed  invalid  or  inoperative,  then this
Agreement shall be construed with the invalid or inoperative  provisions deleted
and the rights and  obligations  of the parties  shall be construed and enforced
accordingly.

13.  Counterparts.  This Agreement may be executed in two or more  counterparts,
each of which  shall be  deemed an  original,  but all of which  together  shall
constitute but one and the same instrument.

14.  Governing Law. The validity,  construction,  enforcement and effect of this
Agreement  shall be  governed  by the  internal  laws of the  State of New York,
without  reference to conflict of law principles of any jurisdiction  (including
without  limitation  New York)  which  would  result in the  application  of the
domestic substantive laws of any other jurisdiction,  except that the Washington
Business Corporation Act shall apply as to matters arising under such law.

15. Headings. The headings for the paragraphs of this Agreement are inserted for
convenience only and shall not constitute a part hereof or affect the meaning or
interpretation of this Agreement.

16. Successors. This Agreement shall be binding upon and inure to the benefit of
Percon and PSC, and their successors,  and Shareholder and Shareholder's  spouse
and their respective executors, personal representatives, administrators, heirs,
legatees,  guardians  and other  legal  representatives.  This  Agreement  shall
survive the death or incapacity of Shareholder.

17.  Termination.  This  Agreement  shall  terminate  at the  earlier of (i) the
termination of the Merger  Agreement or (ii)  consummation  of the  transactions
contemplated by the Merger Agreement.

<PAGE>


                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Agreement to be duly executed as of the day and year first above written.

                                PSC INC.

[SEAL]
                                By:
                                Title:


                                SHAREHOLDER

                                PRENTICE FAMILY PARTNERSHIP

                                                                          [SEAL]
                                Arlen I. Prentice, General Partner

                                Number of Existing Shares: 15,500

Exceptions under Section 2(d): ________________________________________________




                                    AUTHORITY

                  The undersigned,  individually,  represents for the benefit of
PSC that he has the complete and  unrestricted  power and  unqualified  right to
execute this  Agreement on behalf of  Shareholder  and thereby bind  Shareholder
under this Agreement.


_______________________                                                   [SEAL]
Date                             Arlen I. Prentice


                                CONSENT OF SPOUSE

                  I,  the   undersigned   spouse  of   _______________,   hereby
acknowledge  that I have read the  foregoing  Agreement and consent to its terms
and to the disposition  made herein of any interest I may have or acquire in the
common stock of Percon through community or marital property or otherwise.

_______________________                                                   [SEAL]
Date

<PAGE>


                                    Exhibit A

                                  FORM OF PROXY

                  The undersigned,  for consideration received,  hereby appoints
PSC Inc.  his proxy,  with power of  substitution,  to vote all shares of common
stock of Percon Incorporated,  a Washington corporation ("Percon"), owned by the
undersigned at the upcoming  Special Meeting of  Shareholders of Percon,  and at
any adjournment  thereof, FOR approval and adoption of the Agreement and Plan of
Merger,  dated  as of  November  __,  1999,  among  PSC  Inc.,  Percon  and West
Acquisition  Corp.  This proxy is coupled  with an interest  and is  irrevocable
until such time as the Shareholder  Voting  Agreement,  dated as of November __,
1999,  among the  undersigned  and PSC Inc.  terminates in  accordance  with its
terms.  This proxy is  exercisable on behalf of PSC Inc. by the President or any
Vice President of PSC Inc.

                  Dated: ___________

                                                 ------------------------------
                                                 Shareholder


<PAGE>


                                    Exhibit B



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