<TABLE> <S> <C>


        <S> <C>

<PAGE>

<ARTICLE>    5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-
QSB FOR THE PERIOD ENDED JUNE 30, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY 
REFERENCE TO SUCH FINANCIAL STATEMENTS.

<MULTIPLIER>    1,000
       
<S>                                 <C>                      <C>
<PERIOD-TYPE>                        3-MOS                    3-MOS
<FISCAL-YEAR-END>                    MAR-31-1999              MAR-31-1998
<PERIOD-START>                       APR-01-1998              APR-01-1997
<PERIOD-END>                         JUN-30-1998              JUN-30-1997
<CASH>                                     6,954                   17,610
<SECURITIES>                               9,006                        0
<RECEIVABLES>                              4,540 <F1>               3,721 <F1>
<ALLOWANCES>                                   0                        0
<INVENTORY>                                3,638                    3,120
<CURRENT-ASSETS>                          24,697                   25,507
<PP&E>                                     2,612 <F1>               2,254
<DEPRECIATION>                                 0                        0
<TOTAL-ASSETS>                            27,309                   27,761
<CURRENT-LIABILITIES>                      3,576                    6,340
<BONDS>                                      152                      108
<PREFERRED-MANDATORY>                          0                        0
<PREFERRED>                                    0                        0
<COMMON>                                       8                        7
<OTHER-SE>                                23,512                   21,228
<TOTAL-LIABILITY-AND-EQUITY>              27,309                   21,235
<SALES>                                    4,360                    2,553
<TOTAL-REVENUES>                           4,864                    3,501
<CGS>                                      3,353                    1,848
<TOTAL-COSTS>                              3,945                    2,537
<OTHER-EXPENSES>                           1,024 <F2>                 355 <F2>
<LOSS-PROVISION>                               0                        0
<INTEREST-EXPENSE>                            45                       54
<INCOME-PRETAX>                             (583)                      91
<INCOME-TAX>                                   0                        0
<INCOME-CONTINUING>                         (583)                      91
<DISCONTINUED>                                 0                        0
<EXTRAORDINARY>                                0                        0
<CHANGES>                                      0                        0
<NET-INCOME>                                (583)                      91
<EPS-PRIMARY>                              (0.08)<F3>                0.02 <F2>
<EPS-DILUTED>                              (0.08)                    0.02
<FN> 
<F1> Item shown net of allowance, consistent with the balance sheet 
presentation.
<F2> Item consists of research and development.
<F3> Item consists of basic earnings per share.
</FN>
        


</TABLE>