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JOHN VON NEUMANNThe EDVAC
By: Alessandra Souroujon
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Agenda
• Biography• Timeline• Interest in computer• ENIAC• EVAC• How it works• Bibliography
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Biography1903-1957
• born banking family in Budapest
• education in Budapest
• Reputation: theory, algebra, quantum mechanics.
• 1933: Institute for Advanced Studies, appointed Professor of Mathematics
• became US citizens
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Timeline
Born 1903
1921 University of
Budapest
1925 diplomachemistry
1930 Princeton University
1943 ENIAC
19451st draft EDVAC
1947EDVAC published
1955 appointed Atomic Energy Commissioner
Died 1957
1933Appointed
Professor ofMathematics
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http://www-groups.dcs.st-and.ac.uk/~history/PictDisplay/Von_Neumann.htmll
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Interest in computers
• computers to applied mathematics problems. • expertise in: hydrodynamics, ballistics,
meteorology, game theory, and statistics, several projects.
• mechanical devices for computation• ENIAC• 1st Draft of the of a Report on the EDVAC
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ENIACElectronic Numerical Integrator and Computer
• The first large-scale general purpose electronic computer
• Built University of Pennsylvania • Demonstrate high-speed, digital computing• Created by: john W. Mauchly and J. Presper
Eckert • Modern electronic computing industry
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General View of the ENIAC
http://www.library.upenn.edu/exhibits/rbm/mauchly/jwmintro.html
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EDVACElectronic Discrete Variable Automatic Computer
• Neumann drafted “ first draft report of the EDVAC Design”
• EDVAC successor of the ENIAC• Same designers• Public presentation 1947• This machine holds program in memory• More international memory• Multipurpose computer
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Draft
http://www.library.upenn.edu/exhibits/rbm/mauchly/jwm9.html
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EDVAC
http://www.thocp.net/hardware/edvac.htm
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How does it work?
• tube of mercury: electronic pulse could be bounced back and forth
• on/off switchability• EDVAC was to use binary rather than
decimal numbers simplifiying: arithmetic units
• All numbers: binary 0/1
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http://ei.cs.vt.edu/~history/VonNeumann.html
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Bibliography
• http://ei.cs.vt.edu/~history/VonNeumann.html• http://www.library.upenn.edu/exhibits/rbm/
mauchly/jwm9.html• http://www.thocp.net/hardware/edvac.htm• http://ei.cs.vt.edu/~history/VonNeumann.html• http://www.cs.berkeley.edu/~christos/classics/
paper.pdf#search=%22how%20does%20EDVAC%20work%3F%22