This document outlines the 5 generations of computers, describing the key characteristics of each generation including the time period, size, and devices used. The first generation used vacuum tubes and punched cards, the second generation replaced vacuum tubes with transistors, the third generation used integrated circuits, the fourth generation used silicon chips, and the fifth generation focuses on artificial intelligence and uses superconductors and parallel processing.

1. Generations
of
Computer

2. 5 Generations of Computer
• First generation of computer
• Second generation of computer
• Third generation of computer
• Fourth generation of computer
• Fifth generation of computer

3. First generation of computer
The computer of this generation used
electronic devices known as Vacuum tubes
and punched cards to record data.
Period : 1940 - 1956
Size: Very Huge (Size of 3 rooms)
Devices Used: Vacuum Tubes
Examples: Mark1, UNIVAC-1, EDVAC, EDSAC

4. Second generation of computer
These computers used transistors in place
of Vacuum tubes.
Period: 1957-1963
Size: Smaller than first generation of
computers
Devices Used: Transistors

5. Third generation of computer
Integrated circuits are made by many
Transistors.
Period: 1964-1971
Size: Much Smaller than second generation
of computers
Devices Used: Integrated Circuits

6. Fourth generation of computer
A large number of integrated circuits were
put together in a material called silicon
chips. Silicon chips were reliable and cheap.
Period: After 1972 to present
Size: Very Small in Size
Devices Used: Silicon Chips

7. Fifth generation of computer
These computers are based on artificial
intelligence. Parallel processing and
superconductors are used.
Period: Present and Beyond
Size: Very Small
Devices Used: Superconductors
Examples: Robots