Computer Science · Input Devices
Which of the following input devices primarily relies on the principle of capacitive sensing for its operation?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A traditional keyboard registering key presses through physical mechanical switches
- 2A barcode scanner reading encoded information
- 3A modern smartphone touchscreen detecting finger input✓
- 4An optical mouse tracking movement on a surface
Correct answer
A modern smartphone touchscreen detecting finger input
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