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The left end consisted of electromechanical computing components. The right end included data and program readers, and automatic typewriters. The Harvard Mark I, or IBM Automatic Sequence Controlled Calculator (ASCC), was one of the earliest general-purpose electromechanical computers used in the war effort during the last part of World War II.
The new machine, called the IBM Selective Sequence Electronic Calculator (SSEC), was ready to be installed by August 1947. [9] Watson called such machines calculators because computer then referred to humans employed to perform calculations and he wanted to convey the message that IBM's machines were not designed to replace people. Rather they ...
This computer was originally called the ASCC (Automatic Sequence Controlled Calculator) and later renamed Harvard Mark I. With engineering, construction, and funding from IBM, the machine was completed and installed at Harvard in February 1944. [5] Richard Milton Bloch, Robert Campbell and Grace Hopper joined the project later as programmers. [6]
Dreyer Fire Control Table, 1911 – Royal Navy fire control computer; Marchant Calculator, 1918 – Most advanced of the mechanical calculators. The key design was by Carl Friden. Admiralty Fire Control Table, 1922 – Royal Navy advanced fire control computer. [dubious – discuss] István Juhász Gamma-Juhász (gun director) [10] [11] [12 ...
Industrial version of the IBM PC AT, tower form-factor 7532 Industrial Computer: 7532-041 May 1985: Unknown ISA, 16-bit 8 3 Intel 80286: 6 512 KB 1 MB Unknown Unknown Industrial version of the IBM PC AT, 19-inch rack-mountable form factor Industrial Computer 7552: 7552-040 October 1986: Unknown ISA, 16-bit MCA, 16-bit (undocumented)
The IBM Automatic Sequence Controlled Calculator was turned over to Harvard University, which called it the Harvard Mark I. It was designed by Howard Aiken and his team, financed and built by IBM—it became the second program-controlled machine (after Konrad Zuse's). The whole machine was 51 feet (16 m) long, weighed 5 (short) tons (4.5 tonnes ...
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IBM built the Automatic Sequence Controlled Calculator, an electromechanical computer, during World War II. It offered its first commercial stored-program computer, the vacuum tube based IBM 701, in 1952. The IBM 305 RAMAC introduced the hard disk drive in 1956.