Bachelor of Science, Master of Science, Massachusetts Institute of Technology, 1960; Doctor of Science, Massachusetts Institute of Technology, 1962; Doctor of Humane Letters (honorary), University Lowell, 1986.
Director, Honeywell Information Systems, Cambridge, Massachusetts, 1970-1972; vice president research and development, Prime Computer, Framingham, Massachusetts, 1972-1979; chairman, chief Executive officer, president, Apollo Computer, Chelmsford, Massachusetts, 1980-1985; chairman, chief Executive officer, founder, Stellar Computer Inc., Newton, Massachusetts, 1986-1989; Chief Executive Officer, Stardent Computer, Inc., Newton, 1989-1992; Chairman, Board Of Directors, founder, Advanced Visual Systems Inc., Waltham, Massachusetts, since 1992. Director Safeguard Science, Pennsylvania, Cambridge Technology Partners, Massachusetts, XLvision, Melbourne, Florida, Union Pacific Resources, Fort Worth.
Trustee Bentley College, Rice U., Boston Ballet. Fellow Institute of Electrical and Electronics Engineers. Member National Academy of Engineering.
Married Susan McElaney, October 1, 1983. 1 child, Lily; children by previous marriage: Alice Casey, Margaret Kay, John Junior, Mary Beth Pandiscio.