Evolution & Development History In the upstart 1960s a stimulate mold between researchers at MIT, toll Labs and General electric car led to the invention of a third propagation of computing device in operation(p) trunk cognize as MULTICS (MULTiplexed culture and reckoning Service). It was envisaged as a computer utility, a machine that would take everyplace hundreds of simultaneous timesharing users. They envisaged one great machine providing computing warfare machine unit for everyone in Boston. The composition that machines as powerful as their GE-645 would be sold as personal computers costing simply a few metre dollars only 20 years posterior would have seemed equivalent science fiction to them. still MULTICS turn verboten more(prenominal) difficult than imagined to implement and Bell Labs withdrew from the project in 1969 as did General Electric, dropping out of the computer production business altogether. One of the Bell Labs researchers (Ken Thompson) past mulish to rewrite a inhospitable down var. of MULTICS, initially as a hobby. He use a PDP-7 minicomputer that no was using and wrote the code in assembly. It was initially a stripped down, integrity user version of MULTICS merely Thompson actually got the system to sue and one of his colleagues banteringly called it UNICS (UNiplexed Information and Computing Service). The name stuck unless the spelling was ulterior changed to UNIX. in brief Thompson was joined on the project by Dennis Richie and subsequent(prenominal) by his inviolate department. UNIX was moved from the now archaic PDP-7 to the more more newfangled PDP-11/20 and then later to the PDP-11/45 and PDP-11/70. These two last mentioned computers had large memories as swell as memory protective covering hardware, making it possible to bet on three-fold users at the same time. Thompson then decided to rewrite UNIX in a high-level speech communication called B. Unfortunately this attempt was non booming and Richie designed a alternate to B called...

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