<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM DECEMBER 31,
1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENT.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JUN-30-1998
<PERIOD-START>                             JUL-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                          10,905
<SECURITIES>                                    14,569
<RECEIVABLES>                                    6,838
<ALLOWANCES>                                     1,347
<INVENTORY>                                      5,757
<CURRENT-ASSETS>                                37,200
<PP&E>                                           7,377
<DEPRECIATION>                                   3,121
<TOTAL-ASSETS>                                  41,975
<CURRENT-LIABILITIES>                            6,592
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        24,091
<OTHER-SE>                                      11,104
<TOTAL-LIABILITY-AND-EQUITY>                    41,975
<SALES>                                         23,372
<TOTAL-REVENUES>                                23,372
<CGS>                                           13,979
<TOTAL-COSTS>                                   20,364
<OTHER-EXPENSES>                                    70
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  3,324
<INCOME-TAX>                                     1,097
<INCOME-CONTINUING>                              2,227
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,227
<EPS-PRIMARY>                                     0.44
<EPS-DILUTED>                                     0.25