Potentiometer

A potentiometer is a variable resistor. A potentiometer can be used for a variety of functions, such as controlling

A potentiometer usually conisits of three terminals and has some sort of knob or slider that controls the resitivity of the potentiometer. A potentiometer works as a voltage divider where the wiper inside controls how much resistivity is on a given side of the potentiometer. A potentiometer is often wired up with Vin on one side, GND on the other and the middle pin is the output.
 * Volume
 * On screen movement
 * Brightness