· Director of the Research Laboratory of Electronics (RLE), Massachusetts Institute of Technology2001–2011
· Julius A. Stratton Professor of Electrical Engineering, Massachusetts Institute of Technology1985–
· Associate Professor of Electrical Engineering, Massachusetts Institute of Technology1973–1985
· Assistant Professor of Electrical Sciences and Applied Physics, Case Western Reserve University1970–1973
· Ph.D. in Electrical Engineering, Massachusetts Institute of Technology1970–
· E.E. in Electrical Engineering, Massachusetts Institute of Technology1969–
· S.M. in Electrical Engineering, Massachusetts Institute of Technology1968–
· S.B. in Electrical Engineering, Massachusetts Institute of Technology1967–