<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONDENSED
CONSOLIDATED BALANCE SHEET AT JUNE 30, 1998 AND CONDENSED CONSOLIDATED
STATEMENTS OF INCOME FOR THE SIX MONTHS ENDED JUNE 30, 1998 (UNAUDITED) AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          24,098
<SECURITIES>                                    34,775
<RECEIVABLES>                                  268,324
<ALLOWANCES>                                         0
<INVENTORY>                                    143,416
<CURRENT-ASSETS>                               546,630
<PP&E>                                         273,072
<DEPRECIATION>                                 121,725
<TOTAL-ASSETS>                                 988,454
<CURRENT-LIABILITIES>                          262,384
<BONDS>                                         20,800
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        86,771
<OTHER-SE>                                     571,901
<TOTAL-LIABILITY-AND-EQUITY>                   988,454
<SALES>                                        367,031
<TOTAL-REVENUES>                               576,331
<CGS>                                          224,272
<TOTAL-COSTS>                                  384,175
<OTHER-EXPENSES>                               178,978
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 20,104
<INCOME-TAX>                                     7,697
<INCOME-CONTINUING>                             12,407
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    12,407
<EPS-PRIMARY>                                     0.18
<EPS-DILUTED>                                     0.18