compare the input and output devices of old age and modern age
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Explanation:
old
Mechanical MouseEdit.
Optical MouseEdit.
TrackballEdit.
Touchpad/Pointing StickEdit.
Touch ScreenEdit.
StylusEdit.
Light PenEdit.
DigitizerEdit.
new Examples of Input devices:
Keyboard.
Mouse.
Light Pen.
Optical/magnetic Scanner.
Touch Screen.
Microphone for voice as input.
Track Ball.
Joystick.
Perhaps the first input device was the simple electronic switch ( similar to a light switch ) which turned bits on or off. There were hundreds or even thousands of these switches on larger computers.
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