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The computer, which weighs 2.5 metric tons (2.8 short tons), [6] [7] was built and used at the Atomic Energy Research Establishment in Harwell, Berkshire. [8] Construction started in 1949, and the machine became operational in April 1951. [9] It was handed over to the computing group in May 1952 [10] and remained in use until 1957. [11]
Second oldest surviving computer in the world. [16] RCA BIZMAC: 1956 6: RCA's first commercial computer, it contained 25,000 tubes. BESM-2 1957 >20 Built in the Soviet Union. General purpose computer in the BESM series. IBM 610: 1957 180: A small computer designed to be used by one person with limited experience. SEA CAB 3000: 1957 4
PDP-1 PDP-6 PDP-7 PDP-8/e PDP-11/40 PDP-12 PDP-15 (partial) PDP-15 graphics terminal with light pen and digitizing tablet. Programmed Data Processor (PDP), referred to by some customers, media and authors as "Programmable Data Processor," [1] [2] [3] is a term used by the Digital Equipment Corporation from 1957 to 1990 for several lines of minicomputers.
The Manchester Mark 1 final specification is completed; this machine was notably in being the first computer to use the equivalent of base/index registers, a feature not entering common computer architecture until the second generation around 1955. 1949 Australia
Whirlwind I was a Cold War-era vacuum-tube computer developed by the MIT Servomechanisms Laboratory for the U.S. Navy.Operational in 1951, it was among the first digital electronic computers that operated in real-time for output, and the first that was not simply an electronic replacement of older mechanical systems.
The computer had 2,800 vacuum tubes, measured 10 ft (3 m) by 2 ft (0.6 m) by 8½ ft (2.6 m) (L×B×H), and weighed 4,000 pounds (2.0 short tons; 1.8 t). [3] ILLIAC I was very powerful for its time; in 1956, it had more computing power than all of Bell Telephone Laboratories.
The machine contained 4,050 valves and had a power consumption of 25 kilowatts. [16] To increase reliability, purpose-built CRTs made by GEC were used in the machine instead of the standard devices used in the Baby. [1] The Baby's 32-bit word length was increased to 40 bits. Each word could hold either one 40-bit number or two 20-bit program ...
The A-0 system converted the specification into machine code that could be fed into the computer a second time to execute the said program. The A-0 system was followed by the A-1, A-2, [7] A-3 (released as ARITH-MATIC), AT-3 (released as MATH-MATIC), and B-0 (released as FLOW-MATIC).