· Simon Ramo Professor of Computer Science, Emeritus, California Institute of Technology1989–
· Visiting Professor, California Institute of Technology1988–1989
· Professor, University of Texas at Austin1970–1987
· Ph.D. in Operations Research, Massachusetts Institute of Technology1966–1969
· M.S. in Electrical Engineering, Polytechnic Institute of Brooklyn1965–1966
· B.Tech. in Electrical Engineering, Indian Institute of Technology, Madras1961–1965
· Researcher, Honeywell
· Researcher/Consultant, IBM