Press Release

Teradyne and Its Employees Contribute $140,000 to South Asia Relief Efforts

BOSTON--(BUSINESS WIRE)--Jan. 21, 2005--Teradyne, Inc. (NYSE: TER) and its employees have contributed $140,000 so far to charities supporting the South Asia Tsunami disaster relief efforts. Teradyne employees have contributed $70,000 to various relief agencies, and the company has matched individual employee donations with an additional $70,000 donation to the American Red Cross International Response Fund. Teradyne will match employee contributions up to $100,000.

"The response of our people worldwide has been overwhelming," said Mike Bradley, Teradyne President and CEO. "Individual employees, family members and entire offices have taken the initiative in this time of need. We're proud to match our employees' action and generosity."

About Teradyne
Teradyne (NYSE:TER) is a leading supplier of Automatic Test Equipment and interconnection systems. The company's products deliver competitive advantage to the world's leading semiconductor, electronics, automotive and network systems companies. In 2004, Teradyne had sales of $1.8 billion, and currently employs about 5900 people worldwide. For more information, visit www.teradyne.com. Teradyne(R) is a registered trademark of Teradyne, Inc. in the US and other countries. All product names are trademarks or registered trademarks of Teradyne, Inc. (including its subsidiaries) or their respective owners.