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JOHN VON NEUMANNThe EDVAC
By: Alessandra Souroujon
Agenda
• Biography• Timeline• Interest in computer• ENIAC• EVAC• How it works• Bibliography
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
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
http://www-groups.dcs.st-and.ac.uk/~history/PictDisplay/Von_Neumann.htmll
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
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
General View of the ENIAC
http://www.library.upenn.edu/exhibits/rbm/mauchly/jwmintro.html
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
Draft
http://www.library.upenn.edu/exhibits/rbm/mauchly/jwm9.html
EDVAC
http://www.thocp.net/hardware/edvac.htm
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
http://ei.cs.vt.edu/~history/VonNeumann.html
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