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What does capacitive touchscreen technology detect?

Answer and explanation

Correct answer: Changes in the electric field caused by a finger touch

The governing concept is capacitive touch sensing. A capacitive screen maintains an electrical field, and a conductive finger changes the local capacitance or electrical field at the contact point. Sensors measure that change and calculate the touch location, allowing the device to respond to taps or gestures. Therefore B is correct. Paper pressure, sound intensity, and printer ink do not represent the normal sensing principle of a capacitive touchscreen.

Related tags

IctTouchscreenCapacitiveInput-DevicesBasic Components Of A Computer SystemIct (Information & Communication Technology) Skills IIct Information Communication Technology Skills IArtificial Intelligence

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