| 摘要 |
A communications device 10 e.g. mobile telephone comprises a keypad 18 having an input key 22 having associated with it a first input function 42 and a second input function 43, and a mode selector 20, e.g. mode shift key. In response to an activation of the input key, the device performs one of the first and second input functions (e.g. entry of lower or upper case letters) in dependence of the state of the mode selector. A shift lock mechanism may be employed. For convenience, the mode selector 20 maybe located on the side of the device. In one embodiment, the user may select which of two keys (e.g. located on opposite sides of the device, Fig. 4) should function as the mode shift key, e.g. corresponding to whether the user is right- or left-handed. |
