<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEET AT SEPTEMBER 29, 1996 AND THE CONDENSED
CONSOLIDATED STATEMENT OF INCOME FOR THE NINE MONTHS ENDED SEPTEMBER 29, 1996
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<CIK> 0000097210
<NAME> TERADYNE, INC.
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               SEP-29-1996
<EXCHANGE-RATE>                                      1
<CASH>                                         291,559
<SECURITIES>                                    59,352
<RECEIVABLES>                                  193,478
<ALLOWANCES>                                     3,335
<INVENTORY>                                    155,852
<CURRENT-ASSETS>                               731,704
<PP&E>                                         554,758
<DEPRECIATION>                                 281,634
<TOTAL-ASSETS>                               1,088,572
<CURRENT-LIABILITIES>                          208,862
<BONDS>                                         15,807
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        10,364
<OTHER-SE>                                     841,925
<TOTAL-LIABILITY-AND-EQUITY>                 1,088,572
<SALES>                                        930,328
<TOTAL-REVENUES>                               930,328
<CGS>                                          565,102
<TOTAL-COSTS>                                  806,310
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,765
<INCOME-PRETAX>                                135,263
<INCOME-TAX>                                    44,637
<INCOME-CONTINUING>                             90,626
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    90,626
<EPS-PRIMARY>                                     1.08
<EPS-DILUTED>                                     1.07