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

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          MAR-31-2000
<PERIOD-START>                             APR-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          12,024
<SECURITIES>                                    18,682
<RECEIVABLES>                                   31,519
<ALLOWANCES>                                   (1,905)
<INVENTORY>                                     23,789
<CURRENT-ASSETS>                               106,996
<PP&E>                                          35,292
<DEPRECIATION>                                (21,730)
<TOTAL-ASSETS>                                 139,084
<CURRENT-LIABILITIES>                           26,410
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       135,716
<OTHER-SE>                                    (23,042)
<TOTAL-LIABILITY-AND-EQUITY>                   139,084
<SALES>                                         67,782
<TOTAL-REVENUES>                                67,782
<CGS>                                           38,167
<TOTAL-COSTS>                                   36,376
<OTHER-EXPENSES>                                 (285)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 143
<INCOME-PRETAX>                                (6,476)
<INCOME-TAX>                                     (842)
<INCOME-CONTINUING>                            (5,634)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (5,634)
<EPS-BASIC>                                     (0.45)
<EPS-DILUTED>                                   (0.45)