<ARTICLE>  5
<LEGEND>   This schedule contains summary financial information extracted
           from the Balance Sheets and Statements of Operations included in
           the Company's Form 10-K for the year ended May 31, 2000 and is
           qualified in its entirety by reference to such Financial
           Statements.

<MULTIPLIER>1000

                                                 
<FISCAL-YEAR-END>               May-31-2000   May-31-1999   May-31-1998
<PERIOD-START>                  Jun-01-1999   Jun-01-1998   Jun-01-1997
<PERIOD-END>                    May-31-2000   May-31-1999   May-31-1998
<PERIOD-TYPE>                        12-MOS        12-MOS        12-MOS
<CASH>                                8,323         5,336         6,748
<SECURITIES>                          7,365        14,847        16,579
<RECEIVABLES>                         6,444         3,658         7,442
<ALLOWANCES>                            150           125           260
<INVENTORY>                          11,183         9,221        11,942
<CURRENT-ASSETS>                     36,442        35,134        43,858
<PP&E>                               10,184         8,962         7,902
<DEPRECIATION>                        7,571         7,026         6,361
<TOTAL-ASSETS>                       40,729        41,187        47,105
<CURRENT-LIABILITIES>                 6,042         4,118         6,973
<BONDS>                                   0             0             0
<PREFERRED-MANDATORY>                     0             0             0
<PREFERRED>                               0             0             0
<COMMON>                                 69            68            69
<OTHER-SE>                           34,236        36,610        39,895
<TOTAL-LIABILITY-AND-EQUITY>         40,729        41,187        47,105
<SALES>                              24,505        18,146        40,805
<TOTAL-REVENUES>                     24,505        18,146        40,805
<CGS>                                17,267        12,201        24,359
<TOTAL-COSTS>                        17,267        12,201        24,359
<OTHER-EXPENSES>                     12,431        10,577        12,247
<LOSS-PROVISION>                          0             0             0
<INTEREST-EXPENSE>                     (974)       (1,184)         (904)
<INCOME-PRETAX>                      (3,721)       (3,007)        4,739
<INCOME-TAX>                         (1,116)         (677)        2,334
<INCOME-CONTINUING>                  (2,605)       (2,330)        2,405
<DISCONTINUED>                            0             0             0
<EXTRAORDINARY>                           0             0             0
<CHANGES>                                 0             0             0
<NET-INCOME>                         (2,605)       (2,330)        2,405
<EPS-BASIC>                        $(0.38)       ($0.34)        $0.38
<EPS-DILUTED>                        $(0.38)       ($0.34)        $0.36