Like so many other students, he was bothered by the fact that his statistics homework required hours of time-consuming use of a calculator to answer his professor's questions. Eckert, J. Presper, "The ENIAC," in Metropolis, N., J. Howlett, and Gian-Carlo Rota, A homogeneous memory would allow for interchangeability -- a conclusion which implied the insertion of instructions into a modifiable, internal memory. The line of machines created by Eckert and Mauchly was continued through a sequence of reorganizations with Eckert serving successively as vice president and director of Commercial Engineering, Remington-Rand Corporation (1955-1959), vice president and executive assistant to the general manager, Remington-Rand Corporation (1959-1963), and vice president and technical adviser to the president, Univac Division, Sperry-Rand Corporation (1963-1982).
John William Mauchly (August 30, 1907 - January 8, 1980) was an American physicist who, along with J. Presper Eckert, designed ENIAC, the first general purpose electronic digital computer, as … During the final stages of the construction of the ENIAC, John von Neumann was inserted into the environment as a consultant and mentor (and perhaps possible user).
Mauchly, John W., "The ENIAC," in Metropolis, N., J. Howlett, and Gian-Carlo Rota, In the process of the trial the source of John Mauchly…
of Pennsylvania, Philadelphia, June 30, 1945. Maynard, M.M., "Eckert, J. Presper, " in Ralston, Anthony, and Edwin D. Reilly, Jr., …the Moore School, Eckert and Mauchly struggled to obtain capital to build their latest design, a computer they called the Universal Automatic Computer, or UNIVAC. Reprinted in Randell, Brian, [Aspray, W.F., "History of the Stored Program Concept," Meetings in Retrospect, World War II had created the need for improved computing power. On April 9, 1943 (Eckert's 24th birthday) the university received the authority to commence the ENIAC (Electronic Numerical Integrator and Calculator) project with an initial budget of approximately $150,000--an amount which was slowly increased to approximately $400,000 as new requirements were added. There were two main criticisms of the work: mathematicians criticized the use of primitive integration methods in their calculations of the trajectories of ordnance devices, and the engineers predicted that the low reliability of the vacuum tubes would undermine the project.
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In 1946 a dispute broke out at the university when Dean Brainerd asked the ENIAC project participants to sign documents which would assign their intellectual property rights to the university.
Bell Telephone Laboratories had already developed relay-based fire control calculators for ground-to-air use,
Biography John Adam Presper “Pres” Eckert, Jr. (9 April 1919–3 June 1995) was an American electrical engineer and computer pioneer.
With the design of the Univac system, they sold their promises to Northrop Aircraft Company, to the US Air Force, and to the Bureau of the Census.
There was some concern regarding the cumulative effect of round-off or truncation errors, but this too was overcome.
While the EDVAC (Electronic Discrete Variable Computer) was still a dream at the university, Eckert and Mauchly had the concept of a commercial system, but with limited financial backing they needed a contract in order to provide the funding for further developments. ][Eckert ascribes the invention of the term "hierarchical memory" to [The prior paragraphs are based on the interview by Christopher Evans for the Science Museum and the National Physical Laboratory. This article was most recently revised and updated by
Get kids back-to-school ready with Expedition: Learn! The design of the successor to ENIAC, named the EDVAC, was described in a report
In any case the flexibility of the system, as a result of the ability to "program" the calculator, permitted the use of more sophisticated methods. (In the meantime, they contracted with the Northrop Corporation to build the Binary Automatic Computer, or BINAC, which, when completed in 1949, became the first…
The Northrop contract was initially fulfilled with the delivery of their first stored-program machine the BINAC.
John William Mauchly (30 août 1907 – 8 janvier 1980) est un physicien américain qui, avec J. Presper Eckert, a conçu l’ENIAC, longtemps retenu comme étant le premier ordinateur numérique électronique, tout comme l’EDVAC, le BINAC, et l’UNIVAC I, le premier ordinateur fabriqué aux États-Unis..
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