Generations of Computers – Computer Generations

Generations of Computers

Generations of Computers – Computer Generations Project

First Generation of Computer

first generation

1st Generation Computer

Time period – 1946-1958
main components used – vacuum tubes
physical size of computer. Very big, occupied several floors in building and weight more than 25 tons.

Mention other components used for memory, input and output device. – punched cards and paper tape for inputs and outputs.

Efficiency – speed – 10,000 instructions per second.

Commercially available or not. Not available

Example of computers (with its picture) belonging to that generation.

ENIAC , EDSAC , EDVAC , UNIVAC

 

Second Generation of Computer

2nd Generation Computer

Time period – 1958 – 1964

Main components used – transistors

Physical size of computer. – smaller than first genaration ,can fit inside a room.
Mention other components used for memory, input and output device. – punched cards paper tapes for inputs and printer for outputs. Magnetic drums for storage.

Efficiency – more efficient then first generation.

Speed – 30,000 instructions per second.

Commercially available or not. No [ production was costly and difficult]

Example of computers (with its picture) belonging to that generation.

IBM 1400

 

Third Generation of Computer

 

Time period – 1965-1970

Main components used – integrated circuits [ic’s]

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