History of Computer II

WEEK 3

Topic: History of Computer II

Subtitle: Mechanical counting devices

Objectives: At the end of this lesson, pupils should be able to:

1. state the uses of Abacus.

2. mention inventors of mechanical counting devices

CONTENT

The first computer was called the Abacus counting machine.

Early mechanical counting devices and their inventors

1. Abacus

The first computer was made several years ago by a man called Abacus. It was used for simple additions and subtractions. It is known as the Abacus counting machine.

2. Blaise Pascal

A Frenchman called Blaise Pascal made the first adding machine in 1642. It was a very big machine. Blaise Pascal’s father used this machine in recording taxes collected and spent by the government.

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