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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.
During World War II, International Business Machines Corporation (IBM) funded and built an Automatic Sequence Controlled Calculator (ASCC) for Howard H. Aiken at Harvard University. The machine, formally dedicated in August 1944, was widely known as the Harvard Mark I. [2]
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]
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 ...
IBM also played a vital role in technological advancements during the war. In collaboration with the U.S. Navy, IBM built the Automatic Sequence Controlled Calculator, also known as the Harvard Mark I, which was the first large-scale electromechanical calculator in the United States.
In 1937 Bryce was approached by Howard Aiken of Harvard University, who persuaded IBM to fund a programmable calculator which became the Automatic Sequence Controlled Calculator (ASCC), better known as the Harvard Mark I. [3] When Aiken published a press release announcing the ASCC. Bryce was the only IBM person mentioned. [4]
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 ...
A Manual of Operation for the Automatic Sequence Controlled Calculator. The Annals of the Computation Laboratory of Harvard University. Vol. I. Harvard. Charles Babbage Institute Reprint Series for the History of Computing vol.8, 0-262-01084-4; Harvard Computation Laboratory Staff (1947).