super mega mind computer center
Ø A touch screen is an input device
that allows users to operate a PC by simply touching the display screen.
Ø The display screen has a sensitive
glass overlay placed on it and we could give the desired input by touching
it.
Ø A touch screen is based on CRT (Cathode Ray Tube) technology,
that accepts direct onscreen input.
The ability
for direct onscreen input is facilitated by an external (light pen) or an
internal device (touch overlay and controller) .
HOW DOES A TOUCHSCREEN WORK?
Main touch
screen components:
Ø Touch sensor
Ø Controller
Ø Software driver
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