What is generation of Computer — History , 1st , 2nd , 3rd , 4th and 5th
Computer are divided in these forms of generation. Here the generation have been described time wise as well as technologies used.
Introduction
Computer are divided in these forms of generation. Here the generation have been described time wise as well as technologies used.
First generation computer (1942–1955) 13 years
First generation computers are mainframe.
The early computer & other of there time were manufacturing using vacuum tubes as electronic switching device. A vacuum tube was fragile glass divice using filaments as a source of electronics put control and amplify the signal. If was the only high speed electronic switching device available in those days the vacuum tube computer could perform computation in mili seconds and were know as the first generation of computer.
Most of the first generation computer work on the principle of storing programs instructions along with data in memory of computer so that they could autometically exicute a program without human instruction.
Memory of these computers used electromagnetic relays & user all instructions into the system using punctual card programer code instructions in machine & assembling language because of lack of high level programing in those days. Since machine & assembly languages are difficult to work with. Size of first generation computer is like a room.
Main first generation computer are :
ENIAC (Electronic Numerical Integrator and Computer)
EDVAC (Electronic Discrete Variable Automatic Computer)
UNIIVAC (Universal non Integrated Vacuum Actuated Computer)
IBM 701 (International Business Machine)
Main characteristics of first generation computers are:
Main electronic componentVacuum tube