HISTORY OF COMPUTERS

The Contributors

Abacus

The counting frame

HERMAN HOLLERITH

Modern data processing began with the inventions of American engineer, Herman Hollerith. 

HOLLERITH TABULATING MACHINE

Use of electricity to read, count, and sort punched cards whose holes represented data gathered by the census-takers.

CHARLES BABBAGE

Difference engine

GOTTFRIED LEIBNIZ

Leibniz Machine

BLAISE PASCAL

French inventor, Blaise Pascal was one of the most reputed mathematician and physicist of his time. He is credited with inventing an early calculator, amazingly advanced for its time, called the Pascaline.

Pascaline

Pascaline

A Pascaline opened up so you can observe the gears and cylinders which rotated to display the numerical result.