Press Release

Gore Signs Teradyne Licensing Agreement
To Develop GbX® Cable Assemblies

Nashua, NH – May 10, 2005 – Teradyne, Inc. (NYSE: TER) Connection Systems Division, the industry leader in high-performance connection systems, today announced that W. L. Gore & Associates, Inc. (Gore) has signed a licensing agreement to develop and manufacture high-speed cable assembly solutions for Teradyne’s GbX® interconnect platform.

“We’ve had a long standing relationship with Gore, and the GbX license agreement continues to build on a successful portfolio of products between the two companies,” said Lou Zajac, Marketing Manager, Teradyne Connection Systems. “With Gore’s cable and cable assembly capabilities, customers can leverage the complete GbX product line for all of their high-speed interconnect requirements.”

“We are very pleased to extend our working relationship with Teradyne Connection Systems to include the GbX family of products,” said David Gioconda, DataComm Market Segment Leader, Gore. “Convergence of voice, data and video in the data communication marketplace is driving the demand for large data pipelines. The combination of high density GbX connectors and Gore high performance cables set a new benchmark for maximizing bandwidth and signal transmission distance from a limited amount of printed circuit board real estate. ”

Teradyne’s GbX product family includes 2, 3, 4, and 5-pair versions with density up to 69 differential pairs per linear inch, as well as power and grounded guidance. An L-Series version for low speed signals is available in the 2-pair, 3-pair and 4-pair configurations. Both companies have been working closely to offer products that share a common design to ensure intermateability.

“When the cabling solutions are available, original equipment manufacturer (OEM) users can source all GbX interconnect components with confidence that the parts will work together and meet their performance and reliability requirements,” Zajac said.

The licensing agreement is effective immediately. Pre-production availability is expected in July 2005 with full production available later this year.

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.

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.

About W. L. Gore & Associates, Inc.
Founded in 1958, W. L. Gore & Associates, Inc. has parlayed its unique technical capabilities into hundreds of diverse products and is world-renowned for its expertise in configuring the remarkably versatile polymer PTFE. This has resulted in numerous products for electronic signal transmission; fabric laminates; medical implants; as well as membrane, filtration, sealant, and fiber technologies for diverse industries. With nearly $2 billion in sales, the company is headquartered in Delaware in the US and employs approximately 7,000 associates at 45 facilities throughout the world. Gore is one of only five companies included in every selection of Fortune Magazine's "100 Best Companies to Work For" since the list began in 1984. During the last two years, Gore has also been cited among the "Best Places to Work" in Germany, Italy and Scotland. For further information, please visit Gore's Web site at www.gore.com.