— Employees move to new office building in the Foremost Business Park

North Reading, MA – May 12, 2005 -- Teradyne, Inc. (NYSE:TER) a leading manufacturer of high-performance board assembly test and Automated X-Ray Inspection solutions, today announced the successful relocation of its American Way, Poway, California plant to the Foremost Business Park in Poway. Robert Muller, general manager of Teradyne’s Assembly Test Division, said, “With our continued focus on the industry’s demand for Automated X-Ray Inspection, this facility provides the infrastructure to meet Teradyne’s future needs.” The new facility, located about one mile from the old site, now houses the company’s design and marketing teams that previously worked in the American Way facility.

Teradyne’s new facility is located at 12760 Danielson Court, Poway, CA 92064.

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 5,900 people worldwide. For more information, visit www.teradyne.com. Teradyne® is a registered trademark of Teradyne, Inc. in the US and other countries. All product names are trademarks of Teradyne, Inc. (including its subsidiaries) or their respective owners.

Editorial Contact:
Peter Predella
Teradyne Asssembly Test Division
978.370.1401
peter.predella@teradyne.com