| 摘要 |
A mobile communication device, and a method of reading key presses and backlighting a mobile communication device, are disclosed. The method of reading key presses and backlighting a mobile communication device includes providing a mobile communication device including a plurality of marked keys resident on a flip module separate from a main module, and switching, by the mobile communication device, between a first positive voltage to the flip module when the plurality of marked keys are backlit, and a first negative voltage when the plurality of marked keys are not backlit, according to a switch command from the main module. The mobile communication device includes a main module, a flip module electrically connected to the main module, wherein the flip module includes thereon a plurality of marked keys, and a voltage switch which places a first positive voltage on a two wire interface to allow for a reading of a pressed of at least one of the plurality of keys by the main module, and which places a first negative voltage on the two wire interface to prevent the reading of a pressed of at least one of the plurality of keys by the main module.
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