<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
<S> <C> <C> <C>
<PERIOD-TYPE> YEAR YEAR 3-MOS
<FISCAL-YEAR-END> MAR-31-2000 MAR-31-1999 MAR-31-2001
<PERIOD-START> APR-01-1999 APR-01-1998 APR-01-2000
<PERIOD-END> MAR-31-2000 MAR-31-1999 JUN-30-2000
<CASH> 5,179 2,414 3,657
<SECURITIES> 0 0 0
<RECEIVABLES> 5,565 6,002 6,720
<ALLOWANCES> 930 599 1,063
<INVENTORY> 945 807 1,008
<CURRENT-ASSETS> 11,184 8,911 10,653
<PP&E> 8,765 7,915 8,885
<DEPRECIATION> 7,250 5,602 7,534
<TOTAL-ASSETS> 14,968 13,765 14,142
<CURRENT-LIABILITIES> 6,208 7,744 6,618
<BONDS> 0 0 0
0 0 0
506 956 0
<COMMON> 27,083 18,121 27,607
<OTHER-SE> (18,839) (13,145) (20,085)
<TOTAL-LIABILITY-AND-EQUITY> 14,968 13,765 14,142
<SALES> 20,827 21,899 5,001
<TOTAL-REVENUES> 20,827 21,899 5,001
<CGS> 8,992 9,547 1,734
<TOTAL-COSTS> 17,377 13,909 4,471
<OTHER-EXPENSES> 0 0 0
<LOSS-PROVISION> 0 0 0
<INTEREST-EXPENSE> 249 302 42
<INCOME-PRETAX> (5,791) (1,859) (1,246)
<INCOME-TAX> 97 0 0
<INCOME-CONTINUING> (5,694) (1,859) (1,246)
<DISCONTINUED> 0 0 0
<EXTRAORDINARY> 0 0 0
<CHANGES> 0 0 0
<NET-INCOME> (5,694) (1,859) (1,246)
<EPS-BASIC> (0.56) (0.21) (0.10)
<EPS-DILUTED> (0.56) (0.21) (0.10)
</TABLE>