Generations of the Computer. First Generation 1946 - 1959. First Generation (1946 – 1959). Key Component – Vacuum Tubes Very large and bulky No memory Programmed in Machine Language Very expensive to run Used great amounts of power In constant repair Not reliable Input – Punch cards.
Generations of the Computer
Created by Julius Edgar Lilienfeld.
The transistor is a semiconductor used to amplify a switches electronic signals.
Transistors are made with a semiconductor material with at least three terminals.
They can be built very compact, more than 1,000,000 per square centimeter on a silicon chip.
Replaced vacuum tubes.
Used on the telephone-1947
Used on computers late 1950’s through 1960’s.
Transistors are what we use to make the computer code of 1’s and 0’s much faster. They can be switched on and off very rapidly by switching every 0.000000001 Seconds.