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Title : Generation of Computer Systems
Published By : Antony
Posted on: 15 - October - 2013
Edited on: 15 - October - 2013
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Generation of a Computer System

Generation of a computer can be determined by major change in technology used. We can classify the generation of computer system into four, they are

The First Generation

The Second Generation

The Third Generation

The Fourth Generation

The First Generation:

Used in the period of 1938 to 1953.

First electronic digital computer was ENIAC (Electronic Numerical Integrator and Computer).

Vacuum tubes were used as major change.

First stored-program computer was EDVAC (Electronic Discrete Variable Automatic Computer).

The Second Generation:

Used in the period of 1952 to 1963.

Transistor was used in the place of vacuum tubes.

Transistor was faster and produces less heat then vacuum tubes.

First transistorized digital computer was TRADIC.

The Third Generation:

Used in the period of 1962 to 1973.

Transistor was replaced by Integrated circuits. SSI (Small Scale Integration) and MSI (Medium Scale Integration) were used.

Faster than second generation computer and cheap in cost.

The Fourth Generation:

                Used in the period of 1972 to present.

                LSI (Large Scale Integration) and VLSI (Very Large Scale Integration) used

                This led to small in size, lower cost, ultra fast computers.

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