Teradyne, Inc. (NYSE:TER) announced the election of Timothy Guertin to its Board of Directors on January 24.

Mr. Guertin is the President and Chief Executive Officer of Varian Medical Systems, a global manufacturer of medical devices and software for treating cancer and other medical conditions, and a member of its Board of Directors. Prior to becoming CEO in February 2006, he held various executive positions at Varian during his 35-year tenure, including Chief Operating Officer, and General Manager and President of Varian's Oncology Systems business. Mr. Guertin holds a BS in electrical engineering and computer sciences from the University of California at Berkeley.

?Tim Guertin is a strong addition to our Board of Directors,? said Albert Carnesale, Teradyne's Chairman. ?His experience leading and growing a complex, global, technology-driven company will be valuable to our board as we continue to expand Teradyne's reach in the semiconductor and systems test industry.?

About Teradyne

Teradyne (NYSE:TER) is the leading supplier of Automatic Test Equipment used to test complex electronics used in the consumer electronics, automotive, computing, telecommunications, and aerospace and defense industries. For more information, visit www.teradyne.com. Teradyne(R) is a registered trademark of Teradyne, Inc. in the U.S. and other countries. All product names are trademarks of Teradyne, Inc. (including its subsidiaries) or their respective owners.

Teradyne, Inc.
Andy Blanchard, 978-370-2425
Investor Relations
investorrelations@teradyne.com