<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S BALANCE SHEETS AND CONSOLIDATED STATEMENTS OF INCOME AND IS QUALIFIED
IN ITS ENTIRETY TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S.DOLLARS

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          JUL-31-2000
<PERIOD-START>                             AUG-01-1999
<PERIOD-END>                               OCT-31-1999
<EXCHANGE-RATE>                                      1
<CASH>                                          28,140
<SECURITIES>                                    93,847
<RECEIVABLES>                                   59,788
<ALLOWANCES>                                     1,200
<INVENTORY>                                     55,393
<CURRENT-ASSETS>                               244,199
<PP&E>                                         170,675
<DEPRECIATION>                                 107,472
<TOTAL-ASSETS>                                 319,038
<CURRENT-LIABILITIES>                           37,391
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           697
<OTHER-SE>                                     268,708
<TOTAL-LIABILITY-AND-EQUITY>                   319,038
<SALES>                                         59,760
<TOTAL-REVENUES>                                65,438
<CGS>                                           38,120
<TOTAL-COSTS>                                   39,802
<OTHER-EXPENSES>                                20,811
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  87
<INCOME-PRETAX>                                  3,689
<INCOME-TAX>                                     1,144
<INCOME-CONTINUING>                              2,518
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,518
<EPS-BASIC>                                       0.20
<EPS-DILUTED>                                     0.20