History of Computer

History of Computer

Definition: An Electronic device that converts data into information which is useful to people

  • Is Black Box
  • Is a Problem Solver

Every computer has four basic parts, or units:

  • Input unit such as the keyboard, that feeds information into the computer
  • Central processing unit (CPU) that performs the various tasks of the computer
  • Output unit , such as a monitor , that displays the results;
  • Memory that stores information and instructions.

Older Computers were analog

  • Early Computer was created by Vannevar Bush in 1920.
  • This computer was used electric motors  for moving parts to solve equation
  • Represent data as variable points along a continuous spectrum of values.

Early computer types:

  • ABACUS
  • Pascaline
  • Punched Cards
  • Harvard Mark I
  • ENIAC

 

 

 

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