<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 FINACIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JUL-31-1998
<PERIOD-END>                               JUL-31-1998
<EXCHANGE-RATE>                                      1
<CASH>                                           27644
<SECURITIES>                                     94156
<RECEIVABLES>                                    57036
<ALLOWANCES>                                      2643
<INVENTORY>                                      54916
<CURRENT-ASSETS>                                237414
<PP&E>                                          150046
<DEPRECIATION>                                   95469
<TOTAL-ASSETS>                                  302957
<CURRENT-LIABILITIES>                            36696
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           693
<OTHER-SE>                                      250562
<TOTAL-LIABILITY-AND-EQUITY>                    302957
<SALES>                                         276562
<TOTAL-REVENUES>                                294472
<CGS>                                           165891
<TOTAL-COSTS>                                   171982
<OTHER-EXPENSES>                                 81986
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 508
<INCOME-PRETAX>                                  36977
<INCOME-TAX>                                     11991
<INCOME-CONTINUING>                              23888
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     23888
<EPS-PRIMARY>                                     1.89
<EPS-DILUTED>                                     1.87