<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 50,886
<SECURITIES> 20,986
<RECEIVABLES> 30,234
<ALLOWANCES> 1,231
<INVENTORY> 7,716
<CURRENT-ASSETS> 109,813
<PP&E> 21,895
<DEPRECIATION> 7,418
<TOTAL-ASSETS> 134,413
<CURRENT-LIABILITIES> 17,489
<BONDS> 0
0
0
<COMMON> 371
<OTHER-SE> 116,553
<TOTAL-LIABILITY-AND-EQUITY> 134,413
<SALES> 62,303
<TOTAL-REVENUES> 64,363
<CGS> 11,419
<TOTAL-COSTS> 40,317
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 12,627
<INCOME-TAX> 246
<INCOME-CONTINUING> 12,381
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 12,381
<EPS-BASIC> .34
<EPS-DILUTED> .32
</TABLE>