Patent ID: 6801795
Filing Date: 2004-10-05
Classification: H01H,H04M,H05K

Abstract:
A cellular telephone comprising:a housing having a plurality of keys arranged in a second manner on an upper side of the housing; a first circuit board installed inside the housing, the first circuit board having a first connector and comprising a plurality of first key switches arranged in a first manner on the first circuit board; a second circuit board installed inside the housing, the second circuit board having a plurality of second key switches arranged in the second manner for interacting with the plurality of keys to generate corresponding key-pressing signals, and a second connector detachably connected with the first connector for transmitting the key-pressing signals; a processor installed inside the housing and electrically connected to the first connector; and a switch device electrically connected between the processor and the first key switches and the second key switches for switching the processor between the first key switches or the second key switches, wherein when the second connector of the second circuit board is plugged into the first connector of the first circuit board, the switch device will electrically connect the second key switches of the second circuit board to the processor so that the key-pressing signals generated by the second circuit board can be transmitted to the processor, and when the second connector of the second circuit board is not plugged into the first connector of the first circuit board, the switch device will electrically connect the first key switches of the first circuit board to the processor so that the key-pressing signals generated by the first circuit board can be transmitted to the processor.