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PSOS
PSOS, ''PSOs'' or pSOS may refer to: * pSOS (real-time operating system) pSOS (Portable Software On Silicon) is a real-time operating system (RTOS), created in about 1982 by Alfred Chao, and developed and marketed for the first part of its life by his company Software Components Group (SCG). In the 1980s, pSOS rap ... * Provably Secure Operating System * Project Support Open Source * Protective services officers * The Police Service of Scotland See also * pSOS+ {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PSOS (real-time Operating System)
pSOS (Portable Software On Silicon) is a real-time operating system (RTOS), created in about 1982 by Alfred Chao, and developed and marketed for the first part of its life by his company Software Components Group (SCG). In the 1980s, pSOS rapidly became the RTOS of choice for all embedded systems based on the Motorola 68000 series family architecture, because it was written in 68000 assembly language and was highly optimised from the start. It was also modularised, with early support for OS-aware debugging, plug-in device drivers, Internet protocol suite (TCP/IP) stacks, language libraries, and disk subsystems. Later came source code level debugging, multiprocessing support, and further computer networking extensions. In about 1991, Software Components Group was acquired by Integrated Systems Inc. (ISI) which further developed pSOS, then renamed as pSOS+, for other microprocessor families, by rewriting most of it in the programming language C. Attention was also paid to supp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provably Secure Operating System
Peter Gabriel Neumann (born 1932) is a computer science researcher who worked on the Multics operating system in the 1960s. He edits the RISKS Digest columns for ACM '' Software Engineering Notes'' and ''Communications of the ACM''. He founded ACM SIGSOFT and is a Fellow of the ACM, IEEE, and AAAS. Early life and education Neumann holds three degrees from Harvard University: an A.B. (1954) in Mathematics, and an S.M. (1955) and Ph.D. (1961) in Applied Mathematics and Science. He held a Fulbright scholarship in Germany from 1958–1960. While a student at Harvard, he had a two-hour breakfast with Albert Einstein, on 8 November 1952, discussing simplicity in design. Career Neumann worked at Bell Labs from 1960 to 1970. He has worked at SRI International in Menlo Park, California since 1971. Before the RISKS mailing list, Neumann was known for the Provably Secure Operating System (PSOS). Neumann worked with Dorothy E. Denning in the 1980s to develop a computer intrusion d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Project Support Open Source
A project is a type of assignment, typically involving research or design, that is carefully planned to achieve a specific objective. An alternative view sees a project managerially as a sequence of events: a "set of interrelated tasks to be executed over a fixed period and within certain cost and other limitations". A project may be a temporary (rather than a permanent) social system (work system), possibly staffed by teams (within or across organizations) to accomplish particular tasks under time constraints. A project may form a part of wider programme management or function as an ''ad hoc'' system. Open-source software "projects" or artists' musical "projects" (for example) may lack defined team-membership, precise planning and/or time-limited durations. Overview The word ''project'' comes from the Latin word ''projectum'' from the Latin verb ''proicere'', "before an action", which in turn comes from ''pro-'', which denotes precedence, something that comes before s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |