<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S CONSOLIDATED STATEMENT OF OPERATIONS, CONSOLIDATED BALANCE SHEET, AND
CONSOLIDATED STATEMENT OF CASH FLOWS.
</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> 91,910
<SECURITIES> 11,066
<RECEIVABLES> 6,678
<ALLOWANCES> 184
<INVENTORY> 3,749
<CURRENT-ASSETS> 818
<PP&E> 10,002
<DEPRECIATION> 5,822
<TOTAL-ASSETS> 118,869
<CURRENT-LIABILITIES> 7,148
<BONDS> 0
0
0
<COMMON> 102
<OTHER-SE> 110,964
<TOTAL-LIABILITY-AND-EQUITY> 118,869
<SALES> 5,859
<TOTAL-REVENUES> 5,859
<CGS> 6,426
<TOTAL-COSTS> 9,403
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> (1,559)
<INCOME-PRETAX> (1,985)
<INCOME-TAX> 0
<INCOME-CONTINUING> (1,985)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (1,985)
<EPS-BASIC> (0.19)
<EPS-DILUTED> (0.19)
</TABLE>