Information about Electronics: History of Computer

Information of Electronics

Today our topic is Computer.In this blog I try to introduce computer feauters their uses it’s generations and it’s components.

Computer; A computer is a device that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.

Computer Generations;

There are five generations of computer as following,

First Generation of computer;

The first generation lasted from 1940 to 1956. First generation computers operated on vacuum tubes, which served as the circuitry. The magnetic drums served as the memory. These computers were absolutely enormous; entire rooms were occupied by bulky machinery.

Vacuum tubes:

2^nd Generation of computer;

A second generation of computers, through the late 1950s and 1960s featured circuit boards filled with individual transistors and magnetic core memory.

Transistors:

Third generation of computer;

The computers of third generation used Integrated Circuits (ICs) in place of transistors. A single IC has many transistors, resistors, and capacitors along with the associated circuitry. The IC was invented by Jack Kilby. This development made computers smaller in size, reliable, and efficient.

Integrated circuits:

Fourth generation computers;

The period of fourth generation was from 1971-1980. Computers of fourth generation used Very Large Scale Integrated (VLSI) circuits. VLSI circuits having about 5000 transistors and other circuit elements with their associated circuits on a single chip made it possible to have microcomputers of fourth generation.

Very Large Scale Integrated (VLSI) circuits:

Fifth Generation of computer;

The Fifth Generation Computer Systems [Present and Future] (FGCS) was an initiative by Japan's Ministry of International Trade and Industry, begun in 1982, to create a computer using massively parallel computing/processing. ... These Fifth Generation computers will be built around the concepts of logic programming.