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2 definitions found
 for ENIAC
From V.E.R.A. -- Virtual Entity of Relevant Acronyms (September 2014) :

  ENIAC
         Electronic Numerical Integrator And Computer
         

From The Free On-line Dictionary of Computing (18 March 2015) :

  Electronic Numerical Integrator and Computer
  ENIAC
  
      (ENIAC) The first electronic digital computer and
     an ancestor of most computers in use today.  ENIAC was
     developed by Dr. John Mauchly and J. Presper Eckert during
     World War II at the Moore School of the University of
     Pennsylvania.
  
     In 1940 Dr. John Vincent Atanasoff attended a lecture by
     Mauchly and subsequently agreed to show him his binary
     calculator, the Atanasoff-Berry Computer (ABC), which was
     partially built between 1937-1942.  Mauchly used ideas from
     the ABC in the design of ENIAC, which was started in June 1943
     and released publicly in 1946.
  
     ENIAC was not the first digital computer, Konrad Zuse's Z3
     was released in 1941.  Though, like the ABC, the Z3 was
     electromechanical rather than electronic, it was freely
     programmable via paper tape whereas ENIAC was only
     programmable by manual rewiring or switches.  Z3 used binary
     representation like modern computers whereas ENIAC used
     decimal like mechanical calculators.
  
     ENIAC was underwritten and its development overseen by
     Lieutenant Herman Goldstine of the U.S. Army Ballistic
     Research Laboratory (BRL).  While the prime motivation for
     constructing the machine was to automate the wartime
     production of firing and bombing tables, the very first
     program run on ENIAC was a highly classified computation
     for Los Alamos.  Later applications included weather
     prediction, cosmic ray studies, wind tunnel design,
     petroleum exploration, and optics.
  
     ENIAC had 20 registers made entirely from vacuum tubes.
     It had no other no memory as we currently understand it.  The
     machine performed an addition in 200 microseconds, a
     multiplication in about three milliseconds, and a division
     in about 30 milliseconds.
  
     John von Neumann, a world-renowned mathematician serving on
     the BRL Scientific Advisory Committee, soon joined the
     developers of ENIAC and made some critical contributions.
     While Mauchly, Eckert and the Penn team continued on the
     technological problems, he, Goldstine, and others took up the
     logical problems.
  
     In 1947, while working on the design for the successor
     machine, EDVAC, von Neumann realized that ENIAC's lack of a
     central control unit could be overcome to obtain a rudimentary
     stored program computer (see the Clippinger reference below).
     Modifications were undertaken that eventually led to an
     instruction set of 92 "orders".  Von Neumann also proposed
     the fetch-execute cycle.
  
     [R. F. Clippinger, "A Logical Coding System Applied to the
     ENIAC", Ballistic Research Laboratory Report No. 673, Aberdeen
     Proving Ground, MD, September 1948.
     http://ftp.arl.mil/~mike/comphist/48eniac-coding)">(http://ftp.arl.mil/~mike/comphist/48eniac-coding)].
  
     [H. H. Goldstine, "The Computer from Pascal to von Neumann",
     Princeton University Press, 1972].
  
     [K. Kempf, "Electronic Computers within the Ordnance Corps",
     Aberdeen Proving Ground, MD, 1961.
     http://ftp.arl.mil/~mike/comphist/61ordnance)">(http://ftp.arl.mil/~mike/comphist/61ordnance)].
  
     [M. H. Weik, "The ENIAC Story", J. American Ordnance Assoc.,
     1961. http://ftp.arl.mil/~mike/comphist/eniac-story.html)">(http://ftp.arl.mil/~mike/comphist/eniac-story.html)].
  
     [How "general purpose" was ENIAC, compared to Zuse's Z3?]
  
     (2003-10-01)
  

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