Bachelor of Engineering in Physics, Johns Hopkins University, 1966; Doctor of Philosophy, Harvard University, 1970.
Assistant professor, Harvard University, Cambridge, Massachusetts, 1970-1973; member technical staff, Xerox Corporation, Palo Alto, California, 1973-1975; manager, Xerox Corporation, Palo Alto, California, 1976-1979; vice president, Convergent Technologies, San Jose, California, 1979-1985; vice president, Stardent Computers, Sunnyvale, California, 1986-1987; principal venture capital, Hambrecht and Quist, San Francisco, since 1988. Board directors Parc Place Systems, Mountain View, California, Verity, Mountain View, California, WangDAT, Los Angeles, ART: Advanced Recognition Technologies, Palo Alto.
Member Association Computing Machinery (Programming Languages and Systems award 1974).
Married Beth-Ann Maged. Children: Kimberly, Michael, Jennifer, David.