Douglas L PerryDouglas L. Perry is the Director of Marketing for Virtutech, Inc. He is the author of four editions of McGraw-Hill's VHDL. He lives in San Ramon, California.Harry D. Foster serves as Chairman of the Accellera Formal Verification echnical Committee, which is currently defining the PSL (Property Specification Language) standard. He is co-author of the new Kluwer Academic Publishers book Assertion-Based Design. The Chief Methodologist at Jasper Design, Mr. Foster formerly was Verplex Systems' Chief Architect. He lives in Richardson, Texas. Read More Read Less