Please enable JavaScript.
Coggle requires JavaScript to display documents.
ELECTRONIC COMPUTING ((ENIAC) Pennsylvania University, US (Solving …
ELECTRONIC COMPUTING
HARVARD MARK I
Completed by IBM
Contained 765000 components
3 million connections
500 miles of wires
Vacuum Tube
John Ambrose Fleming
using electrical component which is
thermionic valve
American inventor
Lee De Forest
Using third control electrode that sits between two electrode
No moving parts
Advantages :check:
Improvement for mechanical relay
Disadvantages :green_cross:
First scale of vacuum tube
Developed by
Tommy Flowers
December 1943 at Bletchley Park, UK
First programmable electronic computer
helped to decrypting Nazi secret code
HARVARD MARK II
Pulled dead moth
from malfunctioning relay
Attracted insects
Alan Turning
Developed electromechanical device at Bletchley Park in UK
Father of Computer Science
Developed The Bombe
to break Nazi Enigma Code
(
ENIAC
) Pennsylvania
University, US
Electronic Numerical Integrator and Calculator
Developed by
John Mauchly and J. Presper Eckert
A general purpose, programmable and electronic computer
Solving
:question:
5000 ten digits additions and subtractions per seconds
It can operates half day at a time
Vacuum tube base computing has reaching its limits
SAGE Air Defense
Computer System
US Air Force's AN/FSQ-7 Computer
Electrical
Switch
Reduce cost and size
Improve reliability and speed
Transistor
John Bardeen
Functions: it can switch on and off states for 10000 per second
Comparison
The vacuum tubes made of glass with carefully suspended, fragile components. While, transistor is a solid state component
Walter Brattain
William shockley
IBM 608
First fully transistor-powered computer
using 3000 transistors
can solve 4500 additions, 80 multiplications and division per second
