Jan 1, 1200
AbacusThe worlds first computer using sliding beads.
Blaise PascalThe worlds first mechanical calculator.
Joseph JacquardThe worlds first punch card.
Charles Xavier ThomasThe worlds first Arithometer, manuafactured in Paris after WW1.
Charles BabbageThe worlds first Automatic calculator machine that builds tables.
The ABCThe worlds first electronic digital computer.
1st Generation Computers-Used vaccuum tubes
-produced so much heat that the air conditioning wasn't needed
2nd Generation ComputersEarly 1960s
-faster and more reliable
-needed less power to run
-more memory space
-gave off less heat
3rd Generation ComputersLate 1960s
-faster, smaller, more reliable
-software industry emerged
4th Generation Computers-Microprocessors
-computers in homes