<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>                     <C>
<C>
<PERIOD-TYPE>                   12-MOS                   12-MOS                   3-MOS                   6-MOS
9-MOS
<FISCAL-YEAR-END>                          DEC-31-1995             DEC-31-1996             DEC-31-1996             DEC-31-1996
             DEC-31-1996
<PERIOD-END>                               DEC-31-1995             DEC-31-1996             MAR-31-1996             JUN-30-1996
             SEP-30-1996
<CASH>                                         133,414                  76,241                 113,935                 107,115
                  54,456
<SECURITIES>                                    10,675                   6,005                  38,596                  35,003
                  21,341
<RECEIVABLES>                                   24,421                  40,706                  37,893                  35,940
                  55,841
<ALLOWANCES>                                     2,787                  14,092                       0                       0
                       0
<INVENTORY>                                     11,871                  28,056                  11,184                  23,249
                  31,907
<CURRENT-ASSETS>                               186,263                 192,677                 207,060                 214,337
                 200,381
<PP&E>                                          17,564                  43,277                  22,697                  27,312
                  38,412
<DEPRECIATION>                                  10,342                  20,624                  11,175                  12,759
                  18,108
<TOTAL-ASSETS>                                 203,526                 279,515                 228,466                 285,666
                 288,556
<CURRENT-LIABILITIES>                           27,686                  68,190                  29,448                  70,617
                 111,070
<BONDS>                                              0                       0                       0                       0
                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
                       0
<PREFERRED>                                          0                       0                       0                       0
                       0
<COMMON>                                        87,124                 191,044                  96,095                  98,391
                 177,805
<OTHER-SE>                                       (411)                (72,472)                  14,044                  27,866
                (89,826)
<TOTAL-LIABILITY-AND-EQUITY>                   203,526                 279,515                 228,466                 285,666
                 288,556
<SALES>                                        123,190                 319,558                  67,900                 140,858
                 224,038
<TOTAL-REVENUES>                               124,602                 319,758                  68,100                 141,058
                 224,238
<CGS>                                           59,253                 144,985                  31,979                  65,540
                 102,968
<TOTAL-COSTS>                                   59,253                 144,985                  31,979                  65,540
                 102,968
<OTHER-EXPENSES>                                37,369                 214,528                  14,650                  32,307
                 187,078
<LOSS-PROVISION>                                     0                       0                       0                       0
                       0
<INTEREST-EXPENSE>                               1,578                   5,962                       0                       0
                       0
<INCOME-PRETAX>                                 30,039                (39,783)                  21,942                  43,919
                (65,159)
<INCOME-TAX>                                     4,933                  32,944                   7,680                  15,811
                  24,490
<INCOME-CONTINUING>                             24,895                (73,045)                  13,581                  27,427
                (90,330)
<DISCONTINUED>                                       0                       0                       0                       0
                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
                       0
<CHANGES>                                            0                       0                       0                       0
                       0
<NET-INCOME>                                    24,895                (73,045)                  13,581                  27,427
                (90,330)
<EPS-PRIMARY>                                     0.78                  (2.15)                    0.41                    0.83
                  (2.71)
<EPS-DILUTED>                                     0.74                  (2.15)                    0.37                    0.75
                  (2.71)
        


</TABLE>