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Jack Harper e-mail: jharper@frobenius.com Jack Harper's public PGP key for secure e-mail. ...Resume ...Publications

Harper is a software developer/engineer with a deep technical background in cryptography, real-time embedded systems, artificial intelligence, and parallel processing systems. Programming languages used over the past 38-years include C/C++, Common Lisp (and other Lisp varients), ALGOL, FORTRAN, PL/1, SNOBOL, numerous assembly languages, and others on Windows XP/NT/98/95 (soft real-time embedded) and Macintosh platforms, and, many years ago, on embedded 68000 systems, Prime minicomputers, HP 2100 minicomputers, Symbolics LISP Machines, Univac 1108/1110, IBM 360, SDS Sigma-7, and others.

He holds three issued patents: 7,107,457 Optical Card Based System for Individualized Tracking and Record Keeping (US); 7,128,258 Optical Immunization Card (US); and 2005/01261 Optical Banking Card ( in South Africa) and has several other applications currently pending in the areas of cryptography and optical card technology.

His personal interests include the History of Computing -- especially Ancient Lisp Systems (Harper has assembled a collection of still working Lisp Machines (an enormous Symbolics 3650 and several 3620's) and components (e.g., about a hundred triple-high VME boards) from the primordial age of symbolic processing); the Internals of LISP Programming Systems; Amateur Radio (WØYJ -- CW on 20/40 meter HF) especially with vacuum tube receivers/transmitters from the 1950s/1960s; Voracious reading (history, politics, tech, early 20th century literature); Investments; Flying -- stick time in Cessna 150/172/177, Bellanca 14-13-2, Stearman PT-17, J-3 Cub, Sweitzer sailplane and some others; Amateur Astronomy with a Celestron NexStar 11 GPS and a Cave Astrola 10 inch Reflector (under restoration); Scuba Diving (PADI Open Water Certified); Chess (not very well); Cycling; and Skiing. Harper parachuted some years ago and plans to take that up again as time and courage permits.

His professional interests are centered around early stage tech companies and he has thirty years experience in designing, building, and fielding secure and security-related systems and taking the products to market. Harper's past work has involved real-time embedded hardware/software crypto systems; advanced biometrics/fingerprinting; technical details of the U.S. Green Card; the design of variable-topology supercomputer systems for artificial intelligence, molecular modeling, image processing, and other applications; vaguely autonomous laser-imaging guided security robots; and, many years ago, nuclear war-gaming software for NATO in Germany during the Cold War. He has worked, consulted, or sold systems in 22 countries and has an MBA degree from the University of Denver (1992) and B.S. Electrical Engineering and B.A. Mathematics degrees with a Minor in Russian Language and Studies from the University of Houston (1975). He has founded and then taken two companies public with peak combined market capitalization of on the order of $50-million.

Harper is currently writing a book on the early history (1955 - 1962) of the development of the LISP 1.5 programming language along with its first applications to build the classic early AI programs on the IBM 709/7090/7094 mainframes of the time.

Jack's World

Image of Saturn as Seen from Titan Copyright (c) Bonestell Space Art, used with permission.

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Frobenius is an interesting Dead White Male that invented/discovered some Interesting Mathematics.
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