<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-START> APR-01-1999
<PERIOD-END> MAR-31-2000
<CASH> 6,883,524
<SECURITIES> 0
<RECEIVABLES> 146,634
<ALLOWANCES> 20,000
<INVENTORY> 833,416
<CURRENT-ASSETS> 7,908,380
<PP&E> 4,650,499
<DEPRECIATION> 3,307,367
<TOTAL-ASSETS> 9,814,307
<CURRENT-LIABILITIES> 977,658
<BONDS> 0
0
14,705,533
<COMMON> 55,188,623
<OTHER-SE> (61,057,507)
<TOTAL-LIABILITY-AND-EQUITY> 9,814,307
<SALES> 646,590
<TOTAL-REVENUES> 1,224,863
<CGS> 1,791,751
<TOTAL-COSTS> 1,791,751
<OTHER-EXPENSES> 3,878,505
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> (4,319,832)
<INCOME-TAX> 0
<INCOME-CONTINUING> (5,484,351)
<DISCONTINUED> 2,402,877
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (3,081,474)
<EPS-BASIC> (0.53)
<EPS-DILUTED> (0.53)
</TABLE>