<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> MAR-31-1998 <PERIOD-START> APR-01-1997 <PERIOD-END> MAR-31-1998 <CASH> 227,183 <SECURITIES> 470,199 <RECEIVABLES> 140,661 <ALLOWANCES> 4,185 <INVENTORY> 71,297 <CURRENT-ASSETS> 991,094 <PP&E> 278,231 <DEPRECIATION> 83,433 <TOTAL-ASSETS> 1,275,229 <CURRENT-LIABILITIES> 140,484 <BONDS> 230,000 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 114 <OTHER-SE> 904,745 <TOTAL-LIABILITY-AND-EQUITY> 1,275,229 <SALES> 1,007,293 <TOTAL-REVENUES> 1,007,293 <CGS> 391,100 <TOTAL-COSTS> 391,100 <OTHER-EXPENSES> 391,361 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 12,402 <INCOME-PRETAX> 245,329 <INCOME-TAX> 63,452 <INCOME-CONTINUING> 181,877 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 9,000 <NET-INCOME> 172,877 <EPS-BASIC> 1.53 <EPS-DILUTED> 1.46