PRESENTED BY

SYEDA ADIN AJAZ37

EVOLUTION OF COMPUTER

EVOLUTION OF COMPUTER

Since man is born with intelligence, he thought of ways that would make things easy for him. One of the problems encountered by man was counting the things he had. Because of this, he invented something that could help him count fast and easy.

Early Computing Devices

The AbacusAbout 4,000 years ago, the Chinese invented the ABACUS. It is an adding tool that can help can you add & subtract numbers by moving beads back & forth on rods.

The Abacus

The Pascaline Calculator

In 1642, Blaise Pascal, a French mathematician, invented the Pascal calculator. This device, also known as the Pascaline. This device was limited to addition & subtraction only.

The Pascaline Calculator

Leibnitz CalculatorIn 1673, Gottfried Leibntiz, a German mathematician & philosopher, enchanced the Pascaline by creating a device that could also multiply. It can even find the square root of number. The device was called the Leibnitz Calculator/ machine.

Leibnitz Calculator/Machine

Difference Engine

Analytical Engine

Hollerith’s Tabulating Machine

In 1889, Herman Hollerith

mark i1930

ENIAC 1943-1946

Today’s

Computers

Supercomputers

Supercomputers are the most powerful computers made. Supercomputers are used to process huge amount of data for complex processes such as nuclear fission.

Supercomputers

Mainframe ComCputers

Mainframe computers are the largest among the computers in use today. Mainframe computers are used where many people in large organizations are frequently accessing similar information.

Mainframe ComCputers