Thursday, January 15, 2015

Fourth Generation of Computer (1975-1989)

The fourth generation computers started with the invention of Microprocessor. The Microprocessor contains thousands of ICs. Hoff Ted 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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