<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10Q FOR
THE THREE MONTHS ENDED JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<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> 1,370,174 1,581,381<F3>
<SECURITIES> 0 0<F3>
<RECEIVABLES> 1,074,465 1,235,590<F3>
<ALLOWANCES> 156,000 156,000<F3>
<INVENTORY> 1,351,338 1,278,084<F3>
<CURRENT-ASSETS> 3,731,000 4,015,798<F3>
<PP&E> 3,398,204 3,407,114<F3>
<DEPRECIATION> 2,942,781 2,846,318<F3>
<TOTAL-ASSETS> 4,293,621 4,907,930<F3>
<CURRENT-LIABILITIES> 1,992,416 1,993,444<F3>
<BONDS> 0 0<F3>
0 0<F3>
0 0<F3>
<COMMON> 209,333 209,010<F3>
<OTHER-SE> 2,091,872 2,705,476<F3>
<TOTAL-LIABILITY-AND-EQUITY> 4,293,621 4,907,930<F3>
<SALES> 0 0
<TOTAL-REVENUES> 1,579,656 1,501,173
<CGS> 1,162,737 1,289,142
<TOTAL-COSTS> 0 0
<OTHER-EXPENSES> 1,251,363<F1> 1,972,489<F2>
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 0 0
<INCOME-PRETAX> (811,546) (1,724,847)
<INCOME-TAX> 0 0
<INCOME-CONTINUING> 0 0
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (811,546) (1,724,847)
<EPS-BASIC> (.04) (.09)
<EPS-DILUTED> (.04) (.09)
<FN>
<F1>INCLUDES 222,553 EQUITY IN LOSSES OF 3DV.
<F2>INCLUDES 1,091,000 EQUITY IN LOSSES OF 3DV.
<F3>AMOUNTS ARE AS OF MARCH 31, 2000.
</FN>
</TABLE>