Abstract: A wireless communication device includes a PCB, a grounded electrostatic protection element and an antenna. The PCB includes a ground and an antenna clearance portion. The ground portion includes a ground layer. The antenna clearance portion overlaps the antenna and includes a plurality of second key contacts, a plurality of ground contacts and a plurality of microstrips. The second key contacts are placed on a top surface of the PCB. The ground contacts and the microstrips are placed on a bottom surface of the PCB and corresponding to the second key contacts. The plurality of microstrips connect the plurality of ground contacts to the ground layer. The electrostatic protection element connects the second key contacts to protect them from electrostatic interference.

Abstract: A wireless communication device includes a PCB, a grounded electrostatic protection element and an antenna. The PCB includes a ground and an antenna clearance portion. The ground portion includes a ground layer. The antenna clearance portion overlaps the antenna and includes a plurality of second key contacts, a plurality of ground contacts and a plurality of microstrips. The second key contacts are placed on a top surface of the PCB. The ground contacts and the microstrips are placed on a bottom surface of the PCB and corresponding to the second key contacts. The plurality of microstrips connect the plurality of ground contacts to the ground layer. The electrostatic protection element connects the second key contacts to protect them from electrostatic interference.

Abstract: An electronic device includes a keypad including a plurality of keys, a display screen, a user interface module, a storage module, a detection module, a timer, and a comparison module. The storage module stores a scrolling key input interval, and a plurality of predetermined key sequences and corresponding scrolling events. The detection module detects and temporarily stores key inputs. The timer times intervals between neighboring key inputs. The comparison module determines if the intervals between the neighboring key inputs exceed the scrolling key input interval and if the key inputs match with one of the plurality of predetermined key sequences. The user interface module scrolls a current image according to a scrolling event from the comparison module and controls the display screen to display the scrolled image.