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Blaise Parcal made a mechanical caculator.
His calculator used gears and levers to add and subtract numbers. -
Charles Babbage invented a math computer.
It can solve more than one math proplem. -
George R. Stibitz invented the first electric binary adder
This machine used only 1s and 0s to solve math problems. -
Eckert and Mauchly invented the first programmable computer.
It was big as two small houses and weighed 30 tons -
Howard H. Aiken built the first electric caculator .
The Mark1 was as long as half a football field.