Input devices

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  • Created by: Olivia
  • Created on: 23-12-13 13:12

A joystick can input movement

  • These are mainly used to play computer games- but they can also be used to move a computer controlled deice such as a robot or a hospital body scanner.
  • The joystick is fixed to a base but can be moved in any direction. Sensors convert th movement into co-ordinates which tell the compuer how to move the screen display or robot device

Scanners covert images into digital data

  • A scanner works a bit like a fax machine. A picture is passed through the scanner and is converted into digital data. Light and dark parts of the piure are given different codes
  • A problem is that these bitmap files can be very large and so…

Comments

Miss Morgan

A great way of testing yourself.

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