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The category of early computers contains the computer systems made in the early era (i.e., the era in modern computer history defined as the period from the late 1930s to the early 1960s) utilizing mechanical, vacuum tube, discrete transistor, or other pre-integrated circuit technology. See also. Category:History of computing
Three brothers who wrote the Book of Ingenious Devices, describing what appears to be the first programmable machine, an automatic flute player. [8] 1960–1964 Baran, Paul: One of two independent inventors of the concept of digital packet switching used in modern computer networking including the Internet.
However, early junction transistors were relatively bulky devices that were difficult to manufacture on a mass-production basis, which limited them to a number of specialized applications. [54] In 1954, 95% of computers in service were being used for engineering and scientific purposes. [55]
Arab astronomer, Jabir ibn Aflah (Geber), may have invented or inspired the Torquetum, an observational instrument and mechanical analog computer device used to transform between spherical coordinate systems. [7] It was designed to take and convert measurements made in three sets of coordinates: horizon, equatorial, and ecliptic. 1206
The steam-powered automatic flute described by the Book of Ingenious Devices (850) by the Persian-Baghdadi Banū Mūsā brothers may have been the first programmable device. [10] Other early mechanical devices used to perform one or another type of calculations include the planisphere and other mechanical computing devices invented by Al-Biruni ...
Digital machinery used difference engines or relays before the invention of faster memory devices. The phrase computing machine gradually gave way, after the late 1940s, to just computer as the onset of electronic digital machinery became common. These computers were able to perform the calculations that were performed by the previous human clerks.
An early commercial computer. IBM 305 RAMAC: 1956 >1,000: The first commercial computer to use a moving-head hard-disk drive for secondary storage. Bendix G-15: 1956 >400: A small computer for scientific and industrial purposes by the Bendix Corporation. It had a total of about 450 tubes (mostly dual triodes) and 300 germanium diodes. LGP-30: ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 December 2024. 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 ...