<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS FOR THE THREE MONTHS ENDED JUNE 30, 2000 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-START> APR-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 77,046
<SECURITIES> 47,470
<RECEIVABLES> 84,354
<ALLOWANCES> (2,984)
<INVENTORY> 60,971
<CURRENT-ASSETS> 298,404
<PP&E> 62,951
<DEPRECIATION> (34,332)
<TOTAL-ASSETS> 365,911
<CURRENT-LIABILITIES> 107,860
<BONDS> 0
0
0
<COMMON> 247,297
<OTHER-SE> 8,397
<TOTAL-LIABILITY-AND-EQUITY> 365,911
<SALES> 123,671
<TOTAL-REVENUES> 123,671
<CGS> 67,604
<TOTAL-COSTS> 67,604
<OTHER-EXPENSES> 32,874
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 169
<INCOME-PRETAX> 24,504
<INCOME-TAX> 8,619
<INCOME-CONTINUING> 15,885
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 15,885
<EPS-BASIC> 0.49
<EPS-DILUTED> 0.45
</TABLE>