SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


                                   
                                   -----------
                                    FORM 8-K

                                 CURRENT REPORT


                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


       Date of report (Date of earliest event reported): December 1, 1995
                                                         ----------------


                                 Teradyne, Inc.
               -------------------------------------------------
               (Exact Name of Registrant as Specified in Charter)

Massachusetts                 1-6462                        04-2272148
- -------------                 ------                        ----------
(State or Other Jurisdiction (Commission                    (I.R.S. Employer
of Incorporation)             File Number)                  Identification No.)

321 Harrison Avenue,
Boston, Massachusetts                                       02118
- ---------------------------                                 --------
(Address of Principal Executive Offices)                    (Zip Code)



       Registrant's telephone number, including area code: (617) 482-2700
                                                           ---------------


     Total number of sequentially numbered pages in this filing, including
                              exhibits thereto: 38
                                                --
                        Exhibit Index Located on Page 6
                                                      -



                                       2

Item 2.        Acquisition or Disposition of Assets.

         On  December  1,  1995,  Teradyne,   Inc.  ("Teradyne")  completed  the
acquisition of Megatest  Corporation,  a Delaware corporation  ("Megatest"),  by
means of a merger (the "Merger") of M Merger Corp., a Delaware  corporation  and
wholly owned  subsidiary of Teradyne  ("Merger  Sub"),  with and into  Megatest,
pursuant to the  Agreement  and Plan of Merger and  Reorganization,  dated as of
September 5, 1995, as amended (the "Merger  Agreement"),  by and among Teradyne,
Merger Sub and  Megatest.  As a result of the Merger,  Megatest  became a wholly
owned  subsidiary  of  Teradyne.  The  Merger  was  effected  by the filing of a
Certificate  of Merger with the  Secretary  of State of the State of Delaware on
December 1, 1995.

         Teradyne  manufactures  automatic test equipment and connection systems
for the electronics and  telecommunications  industries.  Megatest  manufactures
several lines of semiconductor test systems.

         Pursuant to the terms of the Merger Agreement,  upon the effective time
of the Merger,  each outstanding share of Megatest common stock, $.001 par value
("Megatest Common Stock"), was converted into the right to receive 0.9091 shares
of Teradyne common stock, $.125 par value ("Teradyne Common Stock"), (subject to
payment of cash in lieu of any  fractional  shares).  As a result of the Merger,
the former  stockholders  of Megatest  will  receive  approximately  6.8 million
shares of Teradyne  Common Stock.  Each holder of Megatest  Common Stock who was
otherwise  entitled  to a  fraction  of a share of  Teradyne  Common  Stock will
receive cash in lieu thereof,  equal to such fraction  multiplied by $29.11 (the
"Final  Teradyne  Stock  Price"),  which is the average of the closing prices of
Teradyne Common Stock for the twenty  consecutive  days on which Teradyne Common
Stock was traded on The New York Stock  Exchange  ending on November  24,  1995.
Also, pursuant to the terms of the Merger Agreement,  upon the effective time of
the Merger,  Megatest's  obligations  under  Megatest's  existing  option plans,
whether  vested or unvested,  were  assumed by Teradyne.  The shares of Megatest
Common Stock  subject to the stock option  plans were  converted  into shares of
Teradyne  Common Stock at the rate of 0.9091 shares of Teradyne Common Stock for
each share of Megatest Common Stock.

         The  terms  of this  transaction  and  the  consideration  received  by
Megatest's stockholders were the result of arm's-length negotiations between the
representatives  of Teradyne and Megatest and took into account  various factors
concerning  the relative  valuations of the  businesses  and the common stock of
Teradyne  and  Megatest.  The terms of the Merger and the  exchange  of Megatest
Common  Stock for Teradyne  Common Stock are more fully  described in the Merger
Agreement. A copy of the Merger Agreement is filed as Exhibit 2.1 to this Report
and is incorporated herein by reference.

         The   acquisition  of  Megatest  is  intended  to  qualify  a  tax-free
reorganization  under  Section  368 of the  Internal  Revenue  Code of 1986,  as
amended. Teradyne will account for the transaction as a pooling of interests.



                                       3

Item 7.        Financial Statements and Exhibits.

         (a)      Financial Statements of Business Acquired.

                  The  following  audited  financial   statements  of  Megatest,
together with the reports thereon  manually  signed by Price  Waterhouse LLP and
Deloitte & Touche LLP, appear as Exhibit 99.1 to this Current Report on Form 8-K
and are incorporated herein by this reference:

                  Consolidated Balance Sheets as of August 31, 1995 and 1994

                  Consolidated Statements of Operations for the fiscal years 
                  ended August 31, 1995, 1994 and 1993

                  Consolidated Statements of Stockholders' Equity for the 
                  fiscal years ended August 31, 1995, 1994 and 1993

                  Consolidated Statements of Cash Flows for the fiscal years 
                  ended August 31, 1995, 1994 and 1993

                  Notes to Consolidated Financial Statements

         (b)      Pro Forma Financial Information.

                  The  following  Teradyne  and  Megatest  unaudited  pro  forma
condensed combined  financial  statements appear as Exhibit 99.2 to this Current
Report on Form 8-K and are incorporated herein by this reference:

                  Unaudited Pro Forma Condensed Consolidated Balance Sheet as 
                  of October 1, 1995

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the nine months ended October 1, 1995

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the nine months ended October 2, 1994

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the year ended December 31, 1994

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the year ended December 31, 1993

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the year ended December 31, 1992

                  Notes to Unaudited Pro Forma Condensed Combined Financial 
                  Statements

         (c)      Exhibits.

                                       4

Exhibit no.                                   Description
- -----------                                   -----------

   2.1        Agreement  and  Plan of  Merger  and  Reorganization,  dated as of
              September 5, 1995,  as amended,  by and among  Teradyne,  M Merger
              Corp. and Megatest  Corporation  (filed as Exhibit 2 to Teradyne's
              Registration Statement on Form S-4 (No.
              33-63781) and incorporated herein by reference)

  23.1        Consent of Price Waterhouse LLP

  23.2        Consent of Deloitte & Touche LLP

  99.1        The following audited financial  statements of Megatest,  together
              with the reports thereon  manually signed by Price  Waterhouse LLP
              and Deloitte & Touche LLP:

                  Consolidated Balance Sheets as of August 31, 1995 and 1994

                  Consolidated Statements of Operations for the fiscal years 
                  ended August 31, 1995, 1994 and 1993

                  Consolidated Statements of Stockholders' Equity for the fiscal
                  years ended August 31, 1995, 1994 and 1993

                  Consolidated Statements of Cash Flows for the fiscal years 
                  ended August 31, 1995, 1994 and 1993

                  Notes to Consolidated Financial Statements

  99.2        The following Teradyne and Megatest unaudited pro forma condensed 
              combined financial statements:

                  Unaudited Pro Forma Condensed Consolidated Balance Sheet as of
                  October 1, 1995

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the nine months ended October 1, 1995

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the nine months ended October 2, 1994

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the year ended December 31, 1994

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the year ended December 31, 1993

                  Unaudited Pro Forma Condensed Combined Statement of Operations
                  for the year ended December 31, 1992

                  Notes to Unaudited Pro Forma Condensed Combined Financial 
                  Statements

                                       5

                                   SIGNATURES


         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this Report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                                       Teradyne, Inc.
                                                       --------------
                                                       (Registrant)


Date: December 15, 1995                                 /s/ Owen W. Robbins
                                                        -------------------
                                                        Owen W. Robbins
                                                        Executive Vice President



                                       6

                                  EXHIBIT INDEX




                                                                                            Page Number in
                                                                                            Sequentially 
Exhibit No.                                 Description                                     Numbered Copy
- -----------                                 -----------                                     --------------
                                                                                                                        
   2.1             Agreement and Plan of Merger and Reorganization, dated as of September
                   5, 1995, as amended, by and among Teradyne, M Merger Corp. and
                   Megatest Corporation (filed as Exhibit 2 to Teradyne's Registration
                   Statement on Form S-4 (No. 33-63781) and incorporated herein by
                   reference)                                                                     ---

                                                                                                     
  23.1             Consent of Price Waterhouse LLP                                                8
 
  23.2             Consent of Deloitte & Touche LLP                                               10

  99.1             The following audited financial statements of Megatest, together with
                   the reports thereon manually signed by Price Waterhouse LLP and
                   Deloitte & Touche LLP:                                                         12

                            Consolidated Balance Sheets as of August 31, 1995 and 1994

                            Consolidated Statements of Operations for the fiscal years
                            ended August 31, 1995, 1994 and 1993

                            Consolidated Statements of Stockholders' Equity for the
                            fiscal years ended August 31, 1995, 1994 and 1993

                            Consolidated Statements of Cash Flows for the fiscal years
                            ended August 31, 1995, 1994 and 1993

                            Notes to Consolidated Financial Statements

  99.2             The following Teradyne and Megatest unaudited pro forma condensed
                   combined financial statements:                                                 30

                            Unaudited Pro Forma Condensed Consolidated Balance Sheet as
                            of October 1, 1995

                            Unaudited Pro Forma Condensed  Combined Statement of
                            Operations for the nine months ended October 1, 1995

                            Unaudited Pro Forma Condensed  Combined Statement of
                            Operations for the nine months ended October 2, 1994

                            Unaudited Pro Forma Condensed Combined Statement of
                            Operations for the year ended December 31, 1994

                                       7

                            Unaudited Pro Forma Condensed Combined Statement of
                            Operations for the year ended December 31, 1993

                            Unaudited Pro Forma Condensed Combined Statement of
                            Operations for the year ended December 31, 1992

                            Notes to Unaudited Pro Forma Condensed Combined Financial
                            Statements