<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 BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S.DOLLARS

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JUL-31-1999
<PERIOD-END>                               JUL-31-1999
<EXCHANGE-RATE>                                      1
<CASH>                                           30017
<SECURITIES>                                     94185
<RECEIVABLES>                                    57523
<ALLOWANCES>                                      1123
<INVENTORY>                                      52423
<CURRENT-ASSETS>                                240470
<PP&E>                                          169589
<DEPRECIATION>                                  106075
<TOTAL-ASSETS>                                  315013
<CURRENT-LIABILITIES>                            34598
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           694
<OTHER-SE>                                      266707
<TOTAL-LIABILITY-AND-EQUITY>                    315013
<SALES>                                         260945
<TOTAL-REVENUES>                                279694
<CGS>                                           156732
<TOTAL-COSTS>                                   162830
<OTHER-EXPENSES>                                 86450
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 364
<INCOME-PRETAX>                                  25334
<INCOME-TAX>                                      5063
<INCOME-CONTINUING>                              19513
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     19513
<EPS-BASIC>                                       1.54
<EPS-DILUTED>                                     1.53