<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS FOR THE THREE MONTHS ENDED JUNE 30, 1999 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-START>                             APR-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                          42,302
<SECURITIES>                                         0
<RECEIVABLES>                                    9,278
<ALLOWANCES>                                       141
<INVENTORY>                                      5,733
<CURRENT-ASSETS>                                59,543
<PP&E>                                           5,762
<DEPRECIATION>                                   3,603
<TOTAL-ASSETS>                                  67,215
<CURRENT-LIABILITIES>                            9,209
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        69,243
<OTHER-SE>                                    (11,753)
<TOTAL-LIABILITY-AND-EQUITY>                    57,490
<SALES>                                         16,306
<TOTAL-REVENUES>                                16,306
<CGS>                                            5,264
<TOTAL-COSTS>                                    5,264
<OTHER-EXPENSES>                                10,128
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  1,331
<INCOME-TAX>                                        58
<INCOME-CONTINUING>                              1,273
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,273
<EPS-BASIC>                                        .07
<EPS-DILUTED>                                      .06