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1. From First Generation
To Fifth Generation

2. First Generation:
1940 - 1956
Second Generation:
1956 - 1963
Third Generation:
1964 - 1971
Fourth Generation:
1972 - 1981
Fifth Generation:
1982 - Beyond

3. First Generation Features
Size of these computers was as large as the size of a room.
Vacuum Tubes were used as circuitry to perform the
calculation.
They used an internally stored instructions called
program.
They used capacitors to store binary data and information.
They use the punched card for communication of input and
output data and information.
They generated a lot of heat.

5. Second Generation Features
The computers were still large, but smaller than the
first generation of computers.
They used a transistor in place of Vacuum Tubes to
perform the calculation.
They were produced at a reduced cost compared to the
first generation of computers.
Used magnetic tapes for data
storage.
They were using punch card as input and output of data and
information. The use of a keyboard as an input device was
also introduced.
These computers were still
generating a lot of heat.

7. Third Generation Features
1. • They used large-scale integrated circuits, which
were used for both data processing and storage.
2. • They were of reduced size compared to the
previous generations.
3.
• Keyboard and mouse were used for input
while the monitor was used as the output
device.
4.
• Use of programming languages like
COBOLL and FORTRAN were
developed.

8. UNIVAC 9000 series

9. Fourth Generation Features
Development of a microprocessor which
performs all the tasks of a computer
system.
The size of computers and cost was
reduced.
Increase in speed of computers.
Very large scale (VLSIC) integrated
circuits were used.
Use of special software for maintaining
large databases and C++.

10. Apple 2

11. Fifth Generation Features
• Parallel processing.
• Possession of high-speed logic and memory chip.
• High performance, micro miniaturisation.
• The ability of computers to mimic human intelligence, e.g.
voice recognition, facial face detector, thumbprint.
• Satellite links, virtual reality

12. Bots Robots
Facial Face Detector