<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONSOLIDATED FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH CONSOLIDATED FINANCIAL STATEMENTS AND NOTES. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-END> MAR-31-2000 <CASH> 47,966 <SECURITIES> 152,459 <RECEIVABLES> 246,402 <ALLOWANCES> (14,797) <INVENTORY> 177,448 <CURRENT-ASSETS> 741,711 <PP&E> 978,948 <DEPRECIATION> (772,953) <TOTAL-ASSETS> 1,082,507 <CURRENT-LIABILITIES> 343,542 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 429 <OTHER-SE> 702,972 <TOTAL-LIABILITY-AND-EQUITY> 1,082,507 <SALES> 328,801 <TOTAL-REVENUES> 328,801 <CGS> 226,219 <TOTAL-COSTS> 84,144 <OTHER-EXPENSES> (8,284) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 384 <INCOME-PRETAX> 26,337 <INCOME-TAX> 5,794 <INCOME-CONTINUING> 20,543 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 20,543 <EPS-BASIC> 0.57 <EPS-DILUTED> 0.56