This article is about the MIT Project MAC operating system. CTSS may also stand for the Cray Time Sharing System , a separate system developed for Cray supercomputers.
CTSS, which stood for the Compatible Time-Sharing System, was one of the first time-sharing operating systems; it was developed at Project MAC at MIT. CTSS was first published, as well as operated in a time-sharing environment, in 1961; in addition, it was the system with the first computerized text formatting utility, and one of the very first to have inter-user electronic mail.
Although CTSS was not an influential operating system in its technical detail, it was very influential in showing that time-sharing was viable, in the new applications for computers which were first instantiated there, and because of its successor, Multics, which all modern operating systems are intellectually descended from.
In addition to e-mail and text processing, Louis Pouzin created a facility called RUNCOM for CTSS. This took a collection of commands contained in a file and executed them; this is the direct ancestor of the Unix shell script. It also allowed parameter substitution.
CTSS was developed on the IBM 7094 mainframe computer. CTSS was compatible with the Fortran Monitor System, an older batch computing system that ran on the 7094 computer before CTSS was invented. FMS could run in the background nearly as efficiently as on a 7094 without an OS at all. Running in the background, FMS had access to some tape units and 32 K of RAM.
Multics, which was also developed by Project MAC, was started in the 1960s as a successor to CTSS, for future use in multiple-access computing. Multics, infamously, was the operating system that led to the development of UnixUNIX (or Unix is a portable, multi-task and multi-user computer operating system originally developed by a group of AT&T Bell Labs employees including Ken Thompson, Dennis Ritchie and Douglas McIlroy. Unices The term Unices includes Unix and Unix-like ope in 1970Events January events January 1 Construction begins on Arcosanti, by Paolo Soleri, in Mayer, Arizona, located 65, miles north of Phoenix, Arizona. January 1 Unix epoch at 00:00:00 UTC. January 12 Biafra capitulates, ending the Nigerian civil war. January.
ITSITS the Incompatible Timesharing System was an early, revolutionary, and influential MIT time-sharing operating system; it was developed principally by the Artificial Intelligence Laboratory at MIT, with some help from Project MAC. ITS development was ini, the Incompatible Timesharing System, another early, revolutionary, and influential MIT time-sharing system, was produced by people who disagreed with the direction taken by Multics; the name was a hackHack is a term in the slang of the technology culture which has come into existence over the past few decades. As a noun, it has a number of related meanings; as a verb, it means creating or participating in a hack. All of the modern meanings seem to be r on CTSS, as the name of Unix was later a hack on Multics.
1 See also
- Fernando J. CorbatóFernando Jose Corbat (born July 1, 1926) is a prominent computer scientist, notable as a pioneer in the development of time-sharing operating systems. Amongst many awards, he received the Turing Award in 1990, "for his pioneering work in organizing the co, project leader
2 References
