Touch screens
description
Transcript of Touch screens
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TOUCH SCREENSBy Mr. Eric Cal
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Use either a finger or stylus
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No need of Keyboard or mouse
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Built in or Added on
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Touch screen sensor panel
Sits above the display
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Touch screen controller
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Software Driver
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Exercise 4.1 pg. 20
Do all questions You have five minute to complete the
task Use your book if required SILENCE PLEASE...
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Infrared Touch Screens
Based on light-beam interruption technology
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I need three participants
Driver (bridge) Controller (Police) Sensors (Traffic)
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Resistive Touch Screen
Respond to the pressure of a finger or stylus.
When pressure is applied to the screen, the controller registers the touch event
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Surface acoustic wave (SAW)
One of the most advanced Uses sound waves and not infrared
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Capacitive touch screen
Glass panel with a capacitive (charge storing) material coating its surface
Current is drawn to finger
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The End
Touch your nose! Thank you very much.