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Which technology is used in First Generation of Computer

A. Vacuum Tube
B. Transistors
C. Integrated Circuits
D. Microprocessor

Answer & Solution
Option: A
Explanation :Vacuum Tube is the technology which was used in first generation of computer. The period of First Generation of computer was 1946-1959. Vacuum Tubes were the basic components for memory and circuitry for CPU(Central Processing Unit). Vacuum Tubes are look like electric bulb and produce lot of heat. In First Generation of computer batch processing operating system was used. Punch cards, paper tape, magnetic tape was used as input output devices. In this generation machine code was used as programming language.
Vacuum tubes are unreliable, very costly, generates lot of heat, huge size, consume lot of electricity.
Some important computer of first generations are:- ENIAC, EDVAC, UNIVAC, IBM-701, IBM-750.
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