<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS, CONSOLIDATED STATEMENTS OF OPERATIONS, NOTES TO THE
CONSOLIDATED FINANCIAL STATEMENTS AND SCHEDULE II-VALUATION AND QUALIFYING
ACCOUNTS AND RESERVES AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED SEPTEMBER 30, 2000.

<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               SEP-30-2000
<EXCHANGE-RATE>                                      1
<CASH>                                         131,203
<SECURITIES>                                    88,034
<RECEIVABLES>                                   94,709
<ALLOWANCES>                                     1,930
<INVENTORY>                                     56,975
<CURRENT-ASSETS>                               395,384
<PP&E>                                          61,381
<DEPRECIATION>                                  36,482
<TOTAL-ASSETS>                                 513,128
<CURRENT-LIABILITIES>                           92,304
<BONDS>                                            282
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           172
<OTHER-SE>                                     413,682
<TOTAL-LIABILITY-AND-EQUITY>                   513,128
<SALES>                                        268,281
<TOTAL-REVENUES>                               321,099
<CGS>                                          135,993
<TOTAL-COSTS>                                  171,364
<OTHER-EXPENSES>                                62,034
<LOSS-PROVISION>                                   530
<INTEREST-EXPENSE>                               1,318
<INCOME-PRETAX>                                 25,232
<INCOME-TAX>                                    12,753
<INCOME-CONTINUING>                             12,753
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    12,753
<EPS-BASIC>                                       0.84
<EPS-DILUTED>                                     0.78