<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE COMPANY'S FORM 10-K AND FORMS 10-Q FOR FISCAL YEAR 1996. THE FIGURES HEREIN REFLECT THE FEBRUARY 1997 MERGER OF THE COMPANY WITH SPEEDSIM, INC. WHICH WAS ACCOUNTED FOR AS A POOLING OF INTERESTS. </LEGEND> <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR 3-MOS 6-MOS 9-MOS <FISCAL-YEAR-END> DEC-31-1996 DEC-31-1996 DEC-31-1996 DEC-31-1996 <PERIOD-START> JAN-01-1996 JAN-01-1996 JAN-01-1996 JAN-01-1996 <PERIOD-END> DEC-31-1996 MAR-31-1996 JUN-30-1996 SEP-30-1996 <CASH> 25,790 21,339 24,078 29,425 <SECURITIES> 10,614 15,927 15,109 13,678 <RECEIVABLES> 23,608 17,825 23,221 21,352 <ALLOWANCES> 1,840 1,840 1,867 1,840 <INVENTORY> 10,141 9,284 10,055 10,059 <CURRENT-ASSETS> 77,175 70,033 78,551 80,241 <PP&E> 33,158 28,331 30,698 31,433 <DEPRECIATION> 21,915 15,424 17,469 19,419 <TOTAL-ASSETS> 111,977 97,115 106,398 107,773 <CURRENT-LIABILITIES> 27,932 24,162 30,352 27,932 <BONDS> 0 0 0 0 <PREFERRED-MANDATORY> 0 0 0 0 <PREFERRED> 0 0 0 0 <COMMON> 17 16 16 16 <OTHER-SE> 84,028 69,799 73,414 78,388 <TOTAL-LIABILITY-AND-EQUITY> 111,977 97,115 106,398 107,773 <SALES> 109,578 23,868 50,127 78,914 <TOTAL-REVENUES> 109,578 23,868 50,127 78,914 <CGS> 32,663 7,144 15,057 23,539 <TOTAL-COSTS> 32,663 7,144 15,057 23,539 <OTHER-EXPENSES> 58,942 13,017 27,419 42,685 <LOSS-PROVISION> 0 0 0 0 <INTEREST-EXPENSE> 429 132 240 354 <INCOME-PRETAX> 19,852 4,019 8,450 14,022 <INCOME-TAX> 5,721 1,275 2,716 4,416 <INCOME-CONTINUING> 14,131 2,744 5,734 9,606 <DISCONTINUED> 0 0 0 0 <EXTRAORDINARY> 0 0 0 0 <CHANGES> 0 0 0 0 <NET-INCOME> 14,131 2,744 5,734 9,606 <EPS-PRIMARY> 0.87 0.17 0.35 0.59 <EPS-DILUTED> 0.79 0.16 0.32 0.54