Explain about first generation of computer ?

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 First Generation of Computer (1940 - 1956)

J.P  Eckert and J.W Maischy invested the first  successful  electronic computer called ENIAC, ENIAC stand for electronic integrated and calculator .

It made use of vaccum tubes which  are  the  only electronical component available during those days and require a large cooling system.

The computer were very costly and very big in size, weight about 30 tones and consumed large amount of energy. Very less efficiency and limited programming capabilities. 

Punch cards were used to take inputs. Not reliable and constant maintenance is required.

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