<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONSOLIDATED
BALANCE SHEET, CONSOLIDATED STATEMENT OF OPERATIONS AND CONSOLIDATED STATEMENT
OF CASH FLOWS INCLUDED IN QUICKTURN'S FORM 10-Q FOR THE PERIOD ENDED MARCH 31,
1999, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL 
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                          34,883
<SECURITIES>                                     9,172
<RECEIVABLES>                                   28,124
<ALLOWANCES>                                     1,840
<INVENTORY>                                      8,111
<CURRENT-ASSETS>                                87,319
<PP&E>                                          32,651
<DEPRECIATION>                                  21,913
<TOTAL-ASSETS>                                 131,430
<CURRENT-LIABILITIES>                           38,323
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            18
<OTHER-SE>                                      93,089
<TOTAL-LIABILITY-AND-EQUITY>                   131,430
<SALES>                                         29,957
<TOTAL-REVENUES>                                29,957
<CGS>                                            8,531
<TOTAL-COSTS>                                    8,531
<OTHER-EXPENSES>                                20,595
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   1
<INCOME-PRETAX>                                  1,570
<INCOME-TAX>                                       486
<INCOME-CONTINUING>                              1,084
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,084
<EPS-PRIMARY>                                     0.06
<EPS-DILUTED>                                     0.05