DR. HOWARD JOHNSON has accumulated 30years of experience in digital design, consulting withengineers all over the world. He is the featuredSignal Integrity columnist for EDN Magazine andChief Technical Editor of IEEE—02.3 standards for FastEthernet and Gigabit Ethernet. He frequently conductstechnical workshops for digital engineers at OxfordUniversity and other sites worldwide: www.sigcon.com.DR. MARTIN GRAHAM is Professor Emeritus ofElectrical Engineering and Computer Sciences at theUniversity of California at Berkeley. He specializes inteaching the design of reliable and manufacturableelectronic systems..