Abstract: A portable electronic device includes a main body and a supporting stand. The main body defines a sliding groove. The supporting stand includes a fixed bracket assembled in the sliding groove of the main body, and a rotatable bracket rotatably connected to the fixed bracket. The fixed bracket defines a receiving groove. The rotatable bracket is received in the receiving groove of the fixed bracket at a first state, and the rotatable bracket is rotated out from the receiving groove of the fixed bracket at a second state to support the portable electronic device to stand on a flat surface.

Abstract: An exemplary portable electronic device includes a main body, a cover movably connected with the main body, a piezoelectric sensing unit, and a signal processing unit. The piezoelectric sensing unit is partially positioned on the main body and the cover. The piezoelectric sensing unit generates elastic deformation due to the relative displacement of the cover and the main body to generate a corresponding command signal. The signal processing unit is electrically connected to the piezoelectric sensing unit, and capable of actuating different modes of the portable electronic device according to the command signal.

Abstract: A keypad module including at least one key (30) is described. The key (30) includes a keycap (32), a base (34), a supporting member (36), a resisting member (40) and a dome (42). The base includes a pressed portion (341) and a carrier portion (342) connected to the pressed portion. The keycap is arranged on the pressed portion. The supporting member is located on the carrier portion to support the keycap. The resisting member is located between the pressed portion and the dome to press the dome into a position electrically connected to a circuit board (44).

Abstract: A portable electronic device includes a main body and a supporting stand. The main body defines a sliding groove. The supporting stand includes a fixed bracket assembled in the sliding groove of the main body, and a rotatable bracket rotatably connected to the fixed bracket. The fixed bracket defines a receiving groove. The rotatable bracket is received in the receiving groove of the fixed bracket at a first state, and the rotatable bracket is rotated out from the receiving groove of the fixed bracket at a second state to support the portable electronic device to stand on a flat surface.

Abstract: A keypad module including at least one key (30) is described. The key (30) includes a keycap (32), a base (34), a supporting member (36), a resisting member (40) and a dome (42). The base includes a pressed portion (341) and a carrier portion (342) connected to the pressed portion. The keycap is arranged on the pressed portion. The supporting member is located on the carrier portion to support the keycap. The resisting member is located between the pressed portion and the dome to press the dome into a position electrically connected to a circuit board (44).