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Jan 1, 1200
Abacus
The worlds first computer using sliding beads. -
1st Mechanical Calculator
By Blaise Pascal. Clerks and accountants feared for their jobs! -
Arithmometer
The first commercially successful calculator by Charles Xavier Thomas. -
The Analytical Engine
First computer to have an input, processing, and output by Charles Babbage also known as the "Father of Computers." -
Herman Hollerith
He founded IBM. -
Atanasoff-Berry Computer
First electronaical digital computer. -
1st Generation Computers
They used vaccum tubes, they were huge, unreliable, and produced so much heat that air conditioner was required. -
2nd Generation Computers
They used transistors, needed less power to turn on, gave off less heat, had more memory spcae, faster, realiable, and had an English-like language. -
3rd Generation Computer
They used silicon chips and integrated circuits, faster, smaller, more reliable, and the software industry emerged. -
4th Generation Computer
They used microprocessors, had even smaller circuitry, user friendly, and application software packages that were readily avaible. They were microcomputers.
