1. John von Neumann
“First draft of a Report on the EDVAC”
30 June, 1945
Founding document of modern computing
von Neumann architecture used in most non-parallel processing computers

2. János von Neumann 1903-1957 Non-practicing Jewish family
Mathematical prodigy and party animal
Ph.D. in mathematics from the University of Budapest at the age of 23

3. John von Neumann Princeton University 1930 the father of game theory
during World War II part of the Manhattan Project to develop the first atomic weapons
mathematical formulation of quantum mechanics heavily based on statistical concepts

4. John von Neumann
Designed first examples of self-replicating automata with pencil and graph paper
Explored problems of numerical hydrodynamics
Died of cancer in Washington D.C

5. Human Calculating Machine
North American Aviation, early 1950’s

6. Ten Years Later
Same company with two IBM 7090 computers for designing and testing rocket engines

7. Eckert and Mauchly Computer Corporation
1948
Computing after 1945 is the story of people, who at critical moments, redefined the nature of the technology itself

8. Univac I used 5,200 vacuum tubes weighed 13 metric tons
consumed 125 kW/h
1,905 operations per second running on a 2.25 MHz clock
mercury delay line memory unit 4.3 m × 2.4 m × 2.6 m

9. Univac I complete system occupied more than 35.5 m²
main memory 1000 words of 11 decimal digits plus sign (72 bit words)
The input and output memory 120 words, consisting of 12 channels of 10 word mercury registers

10. Univac I
Between $1,250,000 and $1,500,000
46 systems built and delivered

11. mercury delay line memory
Univac I
mercury delay line memory
7 large mercury tanks
eighteen 10-word channels
horizontal columns of mercury with sending and receiving piezoelectric quartz crystals at each end
channels separated by metal tube waveguides as the data bits moved through the mercury

12. Univac I Each 10-word channel held 910 bits
910-bits re-circulated every 404 µ-seconds
Frequency of the carrier wave for the 910 bits as they moved through the mercury column was Mhz
Main clock in sync with 910 bits of a 10 word channel and provided timing for all operations

13. Admiral Grace Hopper
I am pleased that history recognizes the first to invent something, but I am more concerned with the first person to make it work. – Grace Hopper

14. Grace Hopper Wrote the first manual of operations
Invented the compiler
First debugger
"progenitor" of COBOL

15. An Wang 1920 - 1990 1948 -PhD in applied physics Harvard University
1951-Founded Wang Labs
1955-Awarded patent for a pulse transfer controlling device that made the magnetic core possible, which he also invented
1965 -Introduced LOCI the first calculator that produces a logarithm in one single keystroke

16. Magnetic core memory

17. Magnetic core memory

18. Magnetic core memory

19. Magnetic core memory

20. Magnetic core memory

21. Transistors Invented in Bell Laboratories
Working as memory in the lab in the early 1950’s

22. The Third Generation
The microscopic integrated circuit combined many hundreds of transistors into one unit for fabrication.