<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C> <C>
<PERIOD-TYPE> 3-MOS 3-MOS
<FISCAL-YEAR-END> MAR-31-2001 MAR-31-2000
<PERIOD-START> APR-01-2000 APR-01-1999
<PERIOD-END> JUN-30-2000 JUN-30-1999
<CASH> 3,915,000 5,580,000
<SECURITIES> 0 0
<RECEIVABLES> 983,000 1,525,000
<ALLOWANCES> 72,000 60,000
<INVENTORY> 2,622,000 2,140,000
<CURRENT-ASSETS> 7,929,000 9,914,000
<PP&E> 5,091,000 4,411,000
<DEPRECIATION> 3,266,000 2,464,000
<TOTAL-ASSETS> 10,057,000 12,263,000
<CURRENT-LIABILITIES> 1,835,000 1,887,000
<BONDS> 0 0
0 0
0 0
<COMMON> 64,000 63,000
<OTHER-SE> 7,987,000 10,144,000
<TOTAL-LIABILITY-AND-EQUITY> 10,057,000 12,263,000
<SALES> 1,547,000 2,277,000
<TOTAL-REVENUES> 1,547,000 2,277,000
<CGS> 1,066,000 1,454,000
<TOTAL-COSTS> 1,066,000 1,454,000
<OTHER-EXPENSES> 1,283,000 1,073,000
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> (23,000) (63,000)
<INCOME-PRETAX> (779,000) (187,000)
<INCOME-TAX> 0 0
<INCOME-CONTINUING> 0 0
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (779,000) (187,000)
<EPS-BASIC> (0.12) (0.03)
<EPS-DILUTED> (0.12) (0.03)
</TABLE>