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The Atanasoff–Berry computer (ABC) was the first automatic electronic digital computer. [1] The device was limited by the technology of the day. The ABC's priority is debated among historians of computer technology, because it was neither programmable , nor Turing-complete . [ 2 ]
With a grant of $650 received in September 1939 and the assistance of his graduate student Clifford Berry, the Atanasoff–Berry Computer (ABC) was prototyped by November of that year. According to Atanasoff, several operative principles of the ABC were conceived by him during the winter of 1938 after a drive to Rock Island, Illinois.
ENIAC (/ ˈ ɛ n i æ k /; Electronic Numerical Integrator and Computer) [1] [2] was the first programmable, electronic, general-purpose digital computer, completed in 1945. [ 3 ] [ 4 ] Other computers had some of these features, but ENIAC was the first to have them all.
The first silicon IC computer was the Apollo Guidance Computer or AGC. [169] Although not the most powerful computer of its time, the extreme constraints on size, mass, and power of the Apollo spacecraft required the AGC to be much smaller and denser than any prior computer, weighing in at only 70 pounds (32 kg).
In December 1939 John Atanasoff and Clifford Berry completed their experimental model to prove the concept of the Atanasoff–Berry computer (ABC) which began development in 1937. [40] This experimental model is binary, executed addition and subtraction in octal binary code and is the first binary digital electronic computing device.
The Acorn Business Computer (ABC) [1] was a series of microcomputers announced at the end of 1983 by the British company Acorn Computers.The series of eight computers was aimed at the business, research and further education markets.
Atanasoff-Berry Computer Archive, Computer Science Dept., Iowa State; June 7, 1972 interview with Atanasoff on Berry, Smithsonian National Museum of American History; A. R. Mackintosh, “Dr. Atanasoff’s Computer”, Scientific American, August 1988 (Archived 2009-10-31) "ABC - Atanasoff-Berry Computer", I Programmer
Swedish computer/terminal Luxor ABC 802. The ABC 802 is a compact version with 64 KB RAM where 32 KB is used as a RAM disk. The main board is integrated with a 9" CRT screen and has improved graphics, though no high-resolution graphics. Luxor ABC 802 was a model with a small monochrome screen in yellow phosphor, intended for offices.
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