Page 5 - Digi notes computer
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The first generation of computers were very advanced to the era they
were in. The features they reflected were.


 They used Vacuum Tubes for switching and circuitry.

 Magnetic Drums were used for memory
 Input was made through punched cards and tapes.

 Output was given in form of printouts.

 Use of Machine Language.

 The computational time was in milliseconds that can be
considered a good computational time.



Drawback of First Generation


 Prone to hardware failures.

 Huge in size.

 High electricity consumption.

 Emission of large amount of heat.



Well Known First Generation Computers



ENIAC - Electronic Numerical Integrator and Calculator



EDSAC – Electronic Delay Storage Automatic Calculator


EDVAC – Electronic Discrete Variable Automatic Computer



UNIVAC – Universal Automatic Computer








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