<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
consolidated balance sheet, consolidated statement of operations and
consolidated statement of cash flows included in Quickturn's Form 10-K/A for the
period ending December 31, 1998, and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                          26,552
<SECURITIES>                                    13,717
<RECEIVABLES>                                   29,745
<ALLOWANCES>                                     1,840
<INVENTORY>                                      9,904
<CURRENT-ASSETS>                                86,804
<PP&E>                                          32,506
<DEPRECIATION>                                  20,973
<TOTAL-ASSETS>                                 134,628
<CURRENT-LIABILITIES>                           44,273
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            18
<OTHER-SE>                                      90,337
<TOTAL-LIABILITY-AND-EQUITY>                   134,628
<SALES>                                        104,109
<TOTAL-REVENUES>                               104,109
<CGS>                                           38,017
<TOTAL-COSTS>                                   38,017
<OTHER-EXPENSES>                                81,791
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 132
<INCOME-PRETAX>                               (12,620)
<INCOME-TAX>                                   (5,762)
<INCOME-CONTINUING>                            (6,858)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (6,858)
<EPS-PRIMARY>                                   (0.39)
<EPS-DILUTED>                                   (0.39)