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He created the first commercially available portable computer, the Osborne 1, released in April 1981. It weighed 24.5 pounds (12 kg), cost US$1795—just over half the cost of a computer from other manufacturers with comparable features—and ran the popular CP/M 2.2 operating system. [7] It was designed to fit under an airline seat. [8]
This is an accepted version of this page This is the latest accepted revision, reviewed on 3 February 2025. English mathematician, philosopher, and engineer (1791–1871) "Babbage" redirects here. For other uses, see Babbage (disambiguation). Charles Babbage KH FRS Babbage in 1860 Born (1791-12-26) 26 December 1791 London, England Died 18 October 1871 (1871-10-18) (aged 79) Marylebone, London ...
With James Cooley, created the fast Fourier transform. He invented the term "bit". [57] 1936 Turing, Alan: Made several fundamental contributions to theoretical computer science, including the Turing machine computational model, the conceiving of the stored program concept and the designing of the high-speed ACE design.
The Fisher Space Pen was not commissioned by NASA at a cost of millions of dollars, while the Soviets used pencils. It was independently developed by Paul C. Fisher, founder of the Fisher Pen Company, with $1 million of his own funds. [19] NASA tested and approved the pen for space use, then purchased 400 pens at $6 per pen. [20]
Gary Arlen Kildall (/ ˈ k ɪ l d ˌ ɔː l /; May 19, 1942 – July 11, 1994) was an American computer scientist and microcomputer entrepreneur. During the 1970s, Kildall created the CP/M operating system among other operating systems and programming tools, [5] and subsequently founded Digital Research, Inc. to market and sell his software products.
Sketchpad ran on the MIT Lincoln Laboratory TX-2 (1958) computer at the Massachusetts Institute of Technology (MIT), which had 64k of 36-bit words.The user drew on the computer monitor screen with the recently invented light pen, which relayed information on its position by computing at what time the light from the scanning cathode-ray tube screen is detected.
Later, along with Joseph Condon, Thompson created the hardware-assisted program Belle, a world champion chess computer. [24] He also wrote programs for generating the complete enumeration of chess endings, known as endgame tablebases , for all 4, 5, and 6-piece endings, allowing chess-playing computer programs to make "perfect" moves once a ...
Joseph Carl Robnett Licklider (/ ˈ l ɪ k l aɪ d ər /; March 11, 1915 – June 26, 1990), known simply as J. C. R. or "Lick", was an American psychologist [3] and computer scientist who is considered to be among the most prominent figures in computer science development and general computing history.