Press Release

Teradyne Connection Systems Achieves ISO 14001 Certification at Facilities in Shanghai, China and Penang, Malaysia

International Environmental Management System Standard Awarded to
Company’s Asia manufacturing operations

Nashua, NH – October 4, 2004 – Teradyne, Inc. (NYSE: TER), Connection Systems Division, the industry leader in high-performance connection systems, today announced that its manufacturing operations in Shanghai, China and Penang, Malaysia recently received certification to the ISO 14001 Environmental Management Standard.

The National Standards Authority of Ireland (NSAI), an independent certifying agency, conducted an audit of Teradyne Connection Systems' environmental management systems at its Asia-based plants and issued the ISO 14001 certifications in July, 2004. All of the Teradyne Connection Systems’ manufacturing facilities, including locations in New Hampshire, North Carolina, Ireland and Mexico, are now certified to the ISO 14001 standard.

“The NSAI is proud of its long association with Teradyne Inc,” said Simon Kelly CEO of NSAI. “As a company they have consistently demonstrated their high level of commitment to maintaining the highest standards in quality, safety and environmental management. This commitment is evident at all levels throughout the organization and has resulted in sustained excellence in its operations. Our recent ISO 14001 audits and successful certification of the Asian facilities continues to demonstrate that Teradyne’s corporate ethos is embraced globally.”

Teradyne’s 31,000 square foot Penang facility provides world-class support for its customers’ Asia growth strategies, providing volume system-level manufacturing services for leading multi-national OEMs. The company’s 84,000 square foot Shanghai operation serves multi-national and indigenous Chinese customer requiring high-performance connectors and backplane systems.

“Growth in the Asia datacommunication and telecommunications markets represents a major opportunity for TCS,” said Ward Chartier, TCS Asia Operations Manager. “ISO 14001 certification demonstrates Teradyne’s commitment to operational excellence in serving this growing customer base while maintaining the best possible corporate citizenship in the communities where we operate.”

About ISO
The International Organization for Standardization (ISO) is a worldwide federation of national standards bodies from about 140 countries, one from each country. ISO is a non-governmental organization established in 1947. The mission of ISO is to promote the development of standardization and related activities in the world with a view to facilitating the international exchange of goods and services. For more information visit www.nsaiinc.com.

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 2003, Teradyne had sales of $1.4 billion, and currently employs about 6,300 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 or registered trademarks of Teradyne, Inc. (including its subsidiaries) or their respective owners.

About Teradyne Connection Systems
Teradyne Connection Systems (TCS), a division of Teradyne, Inc., is the leader in high-performance connection systems, designing and manufacturing backplane systems, printed circuit boards and the industry's leading high-speed, high-density connectors. TCS helps OEMs solve system design challenges with integrated interconnect solutions for application in the networking, communications, storage, computer server, and medical equipment markets. For more information visit www.teradyne.com/tcs.