<ARTICLE>           5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEETS AT SEPTEMBER 30, 1999 (UNAUDITED) AND
THE CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS FOR THE THREE MONTHS
ENDED SEPTEMBER 30, 1999 (UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>        1,000


                                    
<PERIOD-TYPE>                                6-MOS
<FISCAL-YEAR-END>                      MAR-31-2000
<PERIOD-START>                         APR-01-1999
<PERIOD-END>                           SEP-30-1999
<CASH>                                       5,097
<SECURITIES>                                 1,959
<RECEIVABLES>                                1,531
<ALLOWANCES>                                  (324)
<INVENTORY>                                  3,455
<CURRENT-ASSETS>                            11,961
<PP&E>                                      17,375
<DEPRECIATION>                              13,017
<TOTAL-ASSETS>                              18,927
<CURRENT-LIABILITIES>                        1,614
<BONDS>                                          0
<COMMON>                                        98
<PREFERRED-MANDATORY>                            0
<PREFERRED>                                      0
<OTHER-SE>                                  17,215
<TOTAL-LIABILITY-AND-EQUITY>                17,313
<SALES>                                      7,993
<TOTAL-REVENUES>                             7,993
<CGS>                                        4,520
<TOTAL-COSTS>                                4,520
<OTHER-EXPENSES>                             2,476
<LOSS-PROVISION>                                 0
<INTEREST-EXPENSE>                               1
<INCOME-PRETAX>                              1,176
<INCOME-TAX>                                (1,056)
<INCOME-CONTINUING>                          2,232
<DISCONTINUED>                                   0
<EXTRAORDINARY>                                  0
<CHANGES>                                        0
<NET-INCOME>                                 2,232
<EPS-BASIC>                                  .23
<EPS-DILUTED>                                  .23