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By Savita S. More

Generations of Computers – Computer Generations

Last updated on October 21st, 2021 at 08:53 pm

Physical size of computer. – smaller than earlier generations, fit on a table or desk.

Mention other components used for memory, input and output device.

Keyboards for input and printers for output.

Efficiency – more efficient than earlier generations.

Speed – 5 million instructions per second.

Commercially available or not. No

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

PDP8 , IBM 360 , IBM 370

Fourth Generation of Computer

 

Time period- 1971 – till date

Main components used – microprocessors [vlsi technology]

Physical size of computer. – smaller than earlier generations

Mention other components used for memory, input and output device. – keyboard mouse as input device and monitor printer as output device.

Efficiency – more efficient than earlier generations.

Speed – Pico seconds is the processing speed of fourth generation computers.

 Commercially available or not. Yes

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

XEROX ALTO & IBM 5100

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