<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROMTHE
CONSOLIDATED BALANCCE SHEET AND THE CONSOLIDATED STATEMENT OF OPERATION 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-END> JUN-30-2000
<CASH> 16,594
<SECURITIES> 85,196
<RECEIVABLES> 35,175
<ALLOWANCES> 0
<INVENTORY> 9,882
<CURRENT-ASSETS> 152,234
<PP&E> 43,210
<DEPRECIATION> 20,968
<TOTAL-ASSETS> 182,640
<CURRENT-LIABILITIES> 22,254
<BONDS> 0
0
0
<COMMON> 544
<OTHER-SE> 155,361
<TOTAL-LIABILITY-AND-EQUITY> 182,640
<SALES> 26,589
<TOTAL-REVENUES> 42,030
<CGS> 4,247
<TOTAL-COSTS> 31,396
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 47
<INCOME-PRETAX> 10,587
<INCOME-TAX> 3,639
<INCOME-CONTINUING> 6,948
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 6,948
<EPS-BASIC> .13
<EPS-DILUTED> .12
</TABLE>