<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-END>                               MAR-30-1997             JUN-29-1997             SEP-28-1997
<CASH>                                          20,529                  30,010                  12,315
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                  189,986                 108,116                 214,827
<ALLOWANCES>                                     3,757                   3,533                   3,757
<INVENTORY>                                    221,032                 274,067                 277,003
<CURRENT-ASSETS>                               462,817                 452,848                 543,386
<PP&E>                                         100,324                 108,140                 116,032
<DEPRECIATION>                                  35,740                  38,567                  41,379
<TOTAL-ASSETS>                                 563,946                 568,693                 665,729
<CURRENT-LIABILITIES>                          140,119                 124,619                 181,273
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                           538                     541                     543
<OTHER-SE>                                     408,685                 421,149                 462,658
<TOTAL-LIABILITY-AND-EQUITY>                   563,946                 568,693                 665,729
<SALES>                                        317,990                 580,978               1,026,950
<TOTAL-REVENUES>                               321,455                 587,744               1,038,252
<CGS>                                          214,884                 393,426                 696,733
<TOTAL-COSTS>                                  214,884                 393,426                 696,733
<OTHER-EXPENSES>                                59,096                 115,729                 183,547
<LOSS-PROVISION>                                 1,556                   1,783                   2,009
<INTEREST-EXPENSE>                                 362                     629                   1,710
<INCOME-PRETAX>                                 47,113                  77,960                 156,262
<INCOME-TAX>                                    17,573                  29,141                  58,504
<INCOME-CONTINUING>                             29,540                  48,819                  97,758
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    29,540                  48,819                  97,758
<EPS-PRIMARY>                                     0.57                    0.94                    1.88
<EPS-DILUTED>                                     0.55                    0.90                    1.81
        

</TABLE>