Alfred J. Stein, Former CEO of VLSI Technology, Joins Yield Dynamics, Inc. Board of Directors.

Business Editors/High-Tech Writers

SANTA CLARA, Calif.--(BUSINESS WIRE)--July 7, 2000

Yield Dynamics, Inc. announced today that Alfred J. Stein has joined the company's Board of Directors.

Commenting on Mr. Stein's appointment, Dr. Jonathan Buckheit, President and CEO, said the company was fortunate to attract a board member at Mr. Stein's level of experience and accomplishment, and he expected his advice and expertise would be a valuable asset for Yield Dynamics in the months and years to come.

Stein added, "To be successful and achieve low costs in a semiconductor manufacturing environment, nothing is more important than maintaining high wafer process, die and product yields. As the device feature size approaches 0.1 micron, to achieve and then control high yields becomes more and more difficult. Hence, there is a growing critical need for fast powerful data analysis software capable of gathering process and device yield information from a myriad of different process steps. Yield Dynamics provides a very powerful solution to this need. I am delighted to work with Jon and his team as a member of their Board of Directors."

Stein served at VLSI Technology, Inc. as its Chairman and Chief Executive Officer from 1982 until its acquisition by Royal Philips Electronics (NYSE:PHG) in 1999. During his tenure, VLSI grew from a venture capital funded start-up to a publicly traded company with revenues in excess of $600 million and over 2,200 employees in more than 25 locations around the world.

Prior to VLSI, he was with Motorola, Inc. (NYSE:MOT) from 1976-1982, as Vice President of its Integrated Circuits Group and Semiconductor Business Unit, and Texas Instruments, Inc. (NYSE:TXN) from 1958-1976, serving most recently as Vice President and General Manager for the Electronics Devices Division.

Mr. Stein has served on the Boards of Directors of Applied Materials, Inc. (Nasdaq:AMAT) and RadioShack Corp. (NYSE:RSH, formerly Tandy Corp.). For over ten years he was on the board of the Semiconductor Industry Association (SIA) where he served as Chairman during 1997. He has been in the semiconductor industry since 1957.

About Yield Dynamics, Inc.

Headquartered in Santa Clara, California, Yield Dynamics is the technology leader in yield management and lithography process control software for the semiconductor industry. Using advanced technology in statistics, simulation, data warehousing and data mining, Yield Dynamics provides the industry with a powerful solution suite that allows integrated circuit manufacturers to manage and increase fabrication yields. Additional information about Yield Dynamics, Inc. can be found at http://www.ydyn.com or by calling 408/330-9320.