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'''Jerome "Jerry" Saltzer''' is an American computer scientist, who was a professor of computer science at [[Massachusetts Institute of Technology|MIT]].

His personal contributions include the subject of his Sc. D. thesis, ''Traffic Control in a Multiplexed Computer System'', which is now the universally used as the mechanism for [[process]] switching in [[operating system]]s. Its basic concept, that each process has its own [[kernel]]-mode [[stack]], and that the system can pause a process, and switch to a different process (and stack), is important because having a per-process stack allows remarkable simplification in the structuring of kernel code. It allows a process to pause execution, while deep in a [[call stack]], and later resume execution at the exact same point it paused - without needing any additional code to return to the exact same point.

He also did work on [[Compatible Time-Sharing System|CTSS]] (including the creation of the [[editor]] [[TYPSET]] and the [[word processor|text-formatter]] [[RUNOFF]]), and on [[Multics]].

He is at least equally important for his many students. For many years his undergraduate course, "Engineering of Computer Systems", was a key part of the education of computer science students at MIT. His graduate students include Michael Schroeder, Roger Schell, Paul Karger, Bernie Greenberg, David Clark, and David Reed.

He was the head of MIT's [[Project Athena]] from 1984 to 1989; during that time he helped with [[Kerberos]].

==External links==

* [http://web.mit.edu/Saltzer/www/home.html Jerry Saltzer] - home page
** [http://web.mit.edu/Saltzer/www/vita.html Curriculum Vitae]
** [http://web.mit.edu/Saltzer/www/publications/unpubs.html Locally distributed documents authored or co-authored by Jerome H. Saltzer]
** [http://web.mit.edu/Saltzer/www/publications/memos.html Memoranda of the Project MAC/LCS Computer Systems Research Group] - many important notes documenting the work of his CSR group on [[internetworking]]

[[Category: People]]

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	** [http://web.mit.edu/Saltzer/www/publications/memos.html Memoranda of the Project MAC/LCS Computer Systems Research Group] - many important notes documenting the work of his CSR group on [[internetworking]]		** [http://web.mit.edu/Saltzer/www/publications/memos.html Memoranda of the Project MAC/LCS Computer Systems Research Group] - many important notes documenting the work of his CSR group on [[internetworking]]

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Jerry Saltzer - Revision history

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