<ARTICLE>      5 
<LEGEND>       THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
               FROM THE ACCOMPANYING CONDENSED CONSOLIDATED FINANCIAL
               STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
               SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000 
       
                                                     
<PERIOD-TYPE>                        3-MOS                 3-MOS
<FISCAL-YEAR-END>                    MAY-31-1998           MAY-31-1997
<PERIOD-START>                       SEP-01-1998           SEP-01-1997
<PERIOD-END>                         NOV-30-1998           NOV-30-1997
<CASH>                                   6,769                 2,404
<SECURITIES>                            13,020                     0
<RECEIVABLES>                            7,101                 8,932
<ALLOWANCES>                               147                   211
<INVENTORY>                             11,738                 9,990
<CURRENT-ASSETS>                        40,107                43,933
<PP&E>                                   8,406                 8,300
<DEPRECIATION>                           6,449                 6,698
<TOTAL-ASSETS>                          44,498                49,771
<CURRENT-LIABILITIES>                    5,706                10,958
<BONDS>                                      0                   220
<PREFERRED-MANDATORY>                        0                     0
<PREFERRED>                                  0                     0
<COMMON>                                    68                    68
<OTHER-SE>                              38,598                38,525
<TOTAL-LIABILITY-AND-EQUITY>            44,498                49,771
<SALES>                                  5,186                11,748
<TOTAL-REVENUES>                         5,186                11,748
<CGS>                                    3,655                 7,166
<TOTAL-COSTS>                            3,655                 7,166
<OTHER-EXPENSES>                         2,852                 2,935
<LOSS-PROVISION>                           317                  (237)
<INTEREST-EXPENSE>                        (320)                 (290)
<INCOME-PRETAX>                           (684)                1,700
<INCOME-TAX>                              (192)                  792
<INCOME-CONTINUING>                       (492)                  908
<DISCONTINUED>                               0                     0
<EXTRAORDINARY>                              0                     0
<CHANGES>                                    0                     0
<NET-INCOME>                              (492)                  908
<EPS-PRIMARY>                           ($0.07)                $0.13
<EPS-DILUTED>                           ($0.07)                $0.12