Concept

Jack Dennis

Summary
Jack Bonnell Dennis (born October 13, 1931) is a computer scientist and Emeritus Professor of Computer Science and Engineering at Massachusetts Institute of Technology. The work of Dennis in computer systems and computer languages is recognized to have played a key role in hacker culture. As a Massachusetts Institute of Technology faculty member he sponsored easier access to computer facilities at MIT during the early development of the subculture. Much of what would later become Unix came from his early collaboration with Dennis Ritchie and Ken Thompson. This collaborative and open philosophy lives on today. Dennis was also a member of the historic Tech Model Railroad Club, which incubated much of the early slang and traditions of hacking. Dennis graduated from the Massachusetts Institute of Technology (MIT) as Bachelor of Science (1953), Master of Science (1954), and Doctor of Science (1958). His doctoral thesis analyzed the relation between mathematical programming problems and electrical networks. After completing his doctorate, Dennis became part of the MIT's Department of Electrical Engineering and Computer Science's faculty, being promoted to full professor in 1969. As a professor at MIT, Dennis was influential in the work of student Alan Kotok and fellow professors Marvin Minsky and John McCarthy. He gave young programmers access to multi-million dollar computers and allowed them to see where their abilities could take them, inspiring a generation of MIT graduates who would shape the computer industry at DEC, Xerox Parc and ARPA. Dennis was one of the founders of the Multics project. His most important contribution to the project was the concept of the single-level memory. Multics was not fully successful as a commercial project, but it was important because it influenced the design of many other computer operating systems, most importantly the direct inspiration for Ken Thompson (who also worked on the project) to design the first incarnation of Unix. In recognition of his work on the Multics project, Dennis was elected as IEEE Fellow.
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