The fourth generation computers started with the invention of
Microprocessor. The Microprocessor contains thousands of
ICs.
Ted Hoff produced the first microprocessor in
1971 for
Intel. It was known as
Intel 4004. The technology of integrated circuits improved rapidly. The
LSI (
Large Scale Integration) circuit and
VLSI (
Very Large Scale Integration) circuit was designed. It greatly reduced the size of computer. The size of modern Microprocessors is usually one square inch. It can contain millions of electronic circuits. The examples of fourth generation computers are
Apple Macintosh &
IBM PC.
Advantages
More powerful and reliable than previous generations.
Small in size
Fast processing power with less power consumption
Fan for heat discharging and thus to keep cold.
No air conditioning required.
Totally general purpose
Commercial production
Less need of repair.
Cheapest among all generations
All types of High level languages can be used in this type of computers
Disadvantages
The latest technology is required for manufacturing of Microprocessors.
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