<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS FOR THE NINE MONTHS ENDED FEBRUARY 28, 1999 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAY-31-1998
<PERIOD-START>                             JUN-01-1998
<PERIOD-END>                               FEB-28-1999
<CASH>                                          36,096
<SECURITIES>                                         0
<RECEIVABLES>                                    7,261
<ALLOWANCES>                                        90
<INVENTORY>                                      7,482
<CURRENT-ASSETS>                                53,333
<PP&E>                                           2,657
<DEPRECIATION>                                   2,754
<TOTAL-ASSETS>                                  57,712
<CURRENT-LIABILITIES>                            4,050
<BONDS>                                            597
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        61,397
<OTHER-SE>                                     (8,332)
<TOTAL-LIABILITY-AND-EQUITY>                    57,712
<SALES>                                         25,078
<TOTAL-REVENUES>                                26,441
<CGS>                                           10,654
<TOTAL-COSTS>                                   10,654
<OTHER-EXPENSES>                                10,240
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  6,956
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                              6,956
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     6,956
<EPS-PRIMARY>                                     0.49
<EPS-DILUTED>                                     0.46