Touch screen technologies is
technologies use a computer screen that are sensitive to the touch of a finger
or stylus.Until nowadays this technologies consists 4 kind such: Resistive, Capacitive, Surface sound wave and Infrared.
This technologies is figure in 3
elements
The bit sensor :
Panel with a touch responsive
surface. Systems are designed supported differing kinds of sensors: resistive
(most common), surface acoustic wave, and electrical phenomenon (most sensible
phones). However, generally sensors have associate degree electrical current
running through them and touching the screen causes a voltage amendment. The
voltage amendment signals the placement of the touching.
The controller:
The controller is that the
hardware that converts the voltage changes on the detector into signals the
computer or different device will receive.
Software :
Use to inform the PC, smartphone,
game device, etc, what is happening on the sensor and the info returning from
the controller. Who's touching what where; and permits the PC or sensible phone
to react consequently. This technology has fancied by E.A. Johnson at the Royal
radar institution, Malvern, UK, around 1965 - 1967.
More Info ?
http://www.engineersgarage.com/articles/touchscreen-technology-working
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