COMPUTER GENERATION

Write down different generation of computers.

There are five generation of computers. The described of different generation of computers are given bellow:-

First generation (1942-1955):

· Big in size and heat generated;

· Making in value and vacuum tube;

· Small memory;

· Use magnetic drum;

· Program execute by coding;

· Costly in use of power , troubleshoot and maintence.

Second generation (1955-1964):

· Circuit board used to making the modular design;

· More reliable and maximum capacity;

· Used transistor;

· Magnetic core used to make memory;

· Uses different high level language.

Third generation (1964-1975):

· Uses magnetic tape, Hard disk memory;

· Uses V.D.U and printer;

· More integrated circuits;

· More reliable and effective in processing;

· Uses package programming;

· Development of operating systems.

Fourth generation (19751989):

· Uses of LSI and VLSI chip;

· Very small in size;

· Uses big memory capacity;

· High speed processor;

· Developed software;

· Using telecommunications;

· LAN,WAN for data communications.