| 摘要 |
An electronic device includes a body and an input device. The body includes a shell and a non-conductive rear cover. The shell defines an opening. The rear cover tightly covers the opening and defines a through hole. The input device includes a resistor, a wire, a non-conductive rotating plate, and a conducting member. The resistor and the wire both are discontinuous ring-shaped, and concentrically disposed on the rear cover surrounding the through hole. The rotating plate is rotatably inserted through the through hole. The conducting member is disposed on the rotating plate and connects the resistor and the wire. The conducting member is operable to move around the resistor and the wire such that a resistance between one end of the resistor and one end of the wire is changed.
|
