What are the features of first generation computers?

Following are some of the important features of First generation computers:

  • Used vacuum tubes to control and amplify electronic signals.
  • Huge computers that occupied lot of space.
  • High electricity consumption and high heat generation.
  • Were unreliable since they were prone to frequent hardware failures.
  • Commercial production was difficult.
  • They were very costly and required constant maintenance.
  • Continuous air conditioning was required.
  • Programming was done in machine language although assembly language also started at the end of this generation
  • Example: ENIAC , EDVAC , UNIVAC 1

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