<ARTICLE>                     5
<MULTIPLIER>                                   1000

                             
<PERIOD-TYPE>                   3-mos
<FISCAL-YEAR-END>                              APR-30-2001
<PERIOD-START>                                 MAY-01-2000
<PERIOD-END>                                   JUL-31-2000
<CASH>                                         4514
<SECURITIES>                                   38949
<RECEIVABLES>                                  8598
<ALLOWANCES>                                   190
<INVENTORY>                                    15279
<CURRENT-ASSETS>                               68925
<PP&E>                                         28631
<DEPRECIATION>                                 19481
<TOTAL-ASSETS>                                 82846
<CURRENT-LIABILITIES>                          4022
<BONDS>                                        0
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       9009
<OTHER-SE>                                     52911
<TOTAL-LIABILITY-AND-EQUITY>                   82846
<SALES>                                        8893
<TOTAL-REVENUES>                               9636
<CGS>                                          4981
<TOTAL-COSTS>                                  8314
<OTHER-EXPENSES>                               56
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             69
<INCOME-PRETAX>                                1197
<INCOME-TAX>                                   390
<INCOME-CONTINUING>                            807
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   807
<EPS-BASIC>                                    0.10
<EPS-DILUTED>                                  0.10