What is the working principle of touch wad of nouns top ?
Answer:
Touchpads operate by sensing the capacitance of a finger, or the capacitance between sensors. Capacitive sensors are laid out along the horizontal and vertical axes of the touchpad. The location of the finger is determined from the pattern of capacitance from these sensors. This is why they will not sense the tip of a pencil or other similar implement.
Capacitance is a guess of the amount of electric charge stored (or separated) for a given electric potential.
The geeky formula is C=Q/V.
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it is a heat temp sensor wad
From the Synaptics website
TouchPad devices work by sensing an electrical property called capacitance. Whenever two electrically conductive objects come fundamental to each other lacking touching, their electric fields interact to form capacitance.
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