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Input devices - Coggle Diagram

- - - - most common used keys placed at "home keys"
        
        reduces distance of finger stretches
    - - originally designed for typewriters, not computer (to
        slow typists to prevent typewriter keys from
        jamming)
        
        considered inefficient because it slows typing
        speeds
    - - projects the image of a QWERTY keyboard on any
        surface
        
        sensors detected typing motion (Bluetooth)
- - - - Optical Recognition
      - Magnetic Recognition
- - - - consist a photocell on its front end
        
        when the photocell touched with monitor
        screen, it detects a position on display
        screen
    - - used to move cursor on monitor screen.
        
        mainly used in Computer Aided Designing
        (CAD) & playing computer games
    - - Roller ball mouse
      - Trackball
      - Optical mouse
    - - pressure-sensitive device that resembles a pencil eraser
        
        move a pointing stick with forefinger while using thumb to
        press related keys
    - - consisting of specialized surface that can translate the motion
        & position of a user's fingers/stylus to a relative position on a
        screen