COMPUTER HARDWARE
INPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How is touch detected in a resistive touchscreen?
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When touched by a finger, there is a change in the electric field at that position
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When touched by a finger, the infra-red beam is interrupted
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Two sound wave transducers detect a reduction in the sound wave amplitude
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When pressed by a finger, the two conducting layers make contact and complete a circuit
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Explanation:
Detailed explanation-1: -Resistive touch screens The two are separated by spacers in the screen so that when your finger presses firmly on the plastic protective layer, the two layers make contact changing the electric charge at that location, which cues the software to respond.
Detailed explanation-2: -Resistive touch screens – the basics The two sheets are separated from each other by a layer of air or inert gas. When the user taps the surface of a resistive touchscreen, the two layers come into contact. This is how resistive touchscreens can identify where exactly they touched the screen.
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