<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AS OF SEPTEMBER 30, 2000 CONSOLIDATED STATEMENT OF
OPERATIONS FOR THE THREE MONTH PERIOD ENDED SEPTEMBER 30,2000 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> MAR-31-2001
<PERIOD-START> APR-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 10,526
<SECURITIES> 6,777
<RECEIVABLES> 38,284
<ALLOWANCES> 6,399
<INVENTORY> 4,970
<CURRENT-ASSETS> 57,817
<PP&E> 25,407
<DEPRECIATION> 14,581
<TOTAL-ASSETS> 75,947
<CURRENT-LIABILITIES> 22,163
<BONDS> 0
0
0
<COMMON> 446
<OTHER-SE> (1,172)
<TOTAL-LIABILITY-AND-EQUITY> 75,947
<SALES> 30,971
<TOTAL-REVENUES> 30,971
<CGS> 19,036
<TOTAL-COSTS> 52,159
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 1,833
<INCOME-PRETAX> (42,195)
<INCOME-TAX> 0
<INCOME-CONTINUING> (42,195)
<DISCONTINUED> 0
<EXTRAORDINARY> (800)
<CHANGES> 0
<NET-INCOME> (42,995)
<EPS-BASIC> (1.16)
<EPS-DILUTED> (1.16)
</TABLE>