COMPUTER SCIENCE AND ENGINEERING
OPERATING SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Resistive Touchscreen
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Capacitive Touchscreen
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SAW
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Infrared
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Detailed explanation-1: -Capacitive touch screens are control displays that utilise the electrical properties of the human body as input. When a finger (or specialised input device, such as stylus) comes in contact with the display it detects when and where on the display the user touches it.
Detailed explanation-2: -There are two types of capacitive touchscreens; surface capacitive and projected capacitive.
Detailed explanation-3: -Capacitive screens are made up of multiple layers of glass and plastic, coated with a conductor material like indium tin oxide or copper. This conductive material responds when contacted by another electrical conductor, like your bare finger.
Detailed explanation-4: -Touchscreens work using electricity. The screen is made of glass, an insulating material – it cannot carry an electric current. The surface of the screen is therefore coated with a thin layer of an electrically conducting material such as indium tin oxide. This is chosen because it is transparent.