<ARTICLE>                     5
<MULTIPLIER>                                   1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              SEP-30-1999
<PERIOD-START>                                 OCT-01-1998
<PERIOD-END>                                   MAR-31-1999
<CASH>                                         33,336
<SECURITIES>                                   37,575
<RECEIVABLES>                                  65,767
<ALLOWANCES>                                   2,279
<INVENTORY>                                    50,595
<CURRENT-ASSETS>                               208,979
<PP&E>                                         105,580
<DEPRECIATION>                                 60,177
<TOTAL-ASSETS>                                 321,968
<CURRENT-LIABILITIES>                          52,077
<BONDS>                                        0
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       159,423
<OTHER-SE>                                     105,781
<TOTAL-LIABILITY-AND-EQUITY>                   321,968
<SALES>                                        134,736
<TOTAL-REVENUES>                               134,736
<CGS>                                          97,535
<TOTAL-COSTS>                                  97,535
<OTHER-EXPENSES>                               64,570
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             97
<INCOME-PRETAX>                                (33,772)
<INCOME-TAX>                                   (10,133)
<INCOME-CONTINUING>                            (23,639)
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   (23,639)
<EPS-PRIMARY>                                  (1.01)
<EPS-DILUTED>                                  (1.01)