<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS FOR THE TWELVE MONTHS ENDED MARCH 31, 2000 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-START> APR-01-1999
<PERIOD-END> MAR-31-2000
<CASH> 12,638
<SECURITIES> 93,450
<RECEIVABLES> 77,078
<ALLOWANCES> (2,809)
<INVENTORY> 49,482
<CURRENT-ASSETS> 35,869
<PP&E> 51,006
<DEPRECIATION> (23,694)
<TOTAL-ASSETS> 329,200
<CURRENT-LIABILITIES> 94,167
<BONDS> 4,613
0
0
<COMMON> 240,594
<OTHER-SE> (74,888)
<TOTAL-LIABILITY-AND-EQUITY> 329,200
<SALES> 225,554
<TOTAL-REVENUES> 225,554
<CGS> 122,499
<TOTAL-COSTS> 87,599
<OTHER-EXPENSES> 664
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 167
<INCOME-PRETAX> 17,527
<INCOME-TAX> 7,508
<INCOME-CONTINUING> 10,019
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 10,019
<EPS-BASIC> 0.36
<EPS-DILUTED> 0.32
</TABLE>