<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONSOLIDATED
BALANCE SHEETS AS OF SEPTEMBER 30, 2000 (UNAUDITED) AND THE CONSOLIDATED
STATEMENTS OF INCOME FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2000 (UNAUDITED)
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               SEP-30-2000
<CASH>                                          33,907
<SECURITIES>                                    52,783
<RECEIVABLES>                                   15,049
<ALLOWANCES>                                         0
<INVENTORY>                                      5,642
<CURRENT-ASSETS>                               113,949
<PP&E>                                           6,123
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                 128,916
<CURRENT-LIABILITIES>                           18,922
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        56,125
<OTHER-SE>                                      53,869
<TOTAL-LIABILITY-AND-EQUITY>                   128,916
<SALES>                                         75,527
<TOTAL-REVENUES>                                75,527
<CGS>                                           25,368
<TOTAL-COSTS>                                   25,368
<OTHER-EXPENSES>                                42,115
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 12,480
<INCOME-TAX>                                     4,423
<INCOME-CONTINUING>                              8,057
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,057
<EPS-BASIC>                                       0.26
<EPS-DILUTED>                                     0.25


</TABLE>



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