# 3rd Class Computers History of Computer Mechanical Device -The Pascaline

Mechanical Device -The Pascaline

Category : 3rd Class

### Mechanical Device - The Pascaline

The calculating machine Pascaline was a mechanical device which was designed and built by the French mathematician-philosopher Blaise Pascal between 1642 and 1644. It could add and subtract numbers. It performed multiplication by repeated addition and division by repeated subtraction. It was also called Pascal's calculator. This machine was capable of doing addition and subtraction with a high speed. It worked on the principle of clockwork mechanism. This machine consisted of chain and toothed wheels. The teeth on each wheel represented numbers from 0 to 9 from right to left and each wheel represented units, tens, hundreds, thousands, ten thousands and so on. This device was used everywhere and became very popular in a short period because of its speed and accuracy.   Pascaline was a calculating machine. What kind of device it was?

(A) Chemical

(B) Mechanical

(C) Electrical

(D) All of these

(E) None of these

Explanation

Correct Option:

(B) Pacaline was a mechanical device.

Incorrect Options:

(A) Chemical: Pascaline was a device and no chemical was used. Therefore, option (A) is Incorrect.

(C) Electrical: Since Pascaline was a mechanical device. Therefore, option (C) is Incorrect.

(D) Option (D) is Incorrect.

(E) Option (E) is Incorrect. Pascaline device was designed and created by the French mathematician. Who was he?

(A) Philosopher Blaise Pascal

(B) Economist Bularo Pascal

(C) Scientist Baciluss Pascal

(D) Physicist Bablo Pascal

(E) None of these

Explanation

Correct Option:

(A) Philosopher Blaise Pascal.

Incorrect Options:

(B) Option (B) is Incorrect.

(C) Option (C) is Incorrect.

(D) Option (D) is Incorrect.

(E) Option (E) is Incorrect.

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