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Features of First Generation Computer
Very large in size
Very expensive.
Made up of vacuum tubes.
Vacuum Tube
2. Second Generation (1950s):
∑ Transistors replaced vacuum tubes, making computers smaller, faster, and more reliable.
∑ Introduction of magnetic tapes for storage.
Features of Second Generation Computer
Made up of transistors.
Magnetic tapes were used to store data.
Small in size and less expensive than the first generation computer.
Faster and reliable.
Transistor
3. Third Generation (1960s):
∑ Integrated Circuits (ICs) allowed further miniaturisation, improving speed, cost-efficiency, and
storage capacity.
∑ Emergence of minicomputers.
Features of Third Generation Computer
These computers were made of ICs.
The use of the ICs reduced the size and increased the speed of
the computers.
They were more affordable and dependable.
Integrated Circuits
4. Fourth Generation (1970s):
∑ Introduction of microprocessors (VLSI technology), with the development of personal computers
(PCs) and the rise of GUI (Graphical User Interface).
∑ IBM and Microsoft Windows played key roles in popularising personal computing.
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