| 摘要 |
An apparatus and method for controlling keys of a mobile terminal are disclosed. An interface chip for performing conversion between parallel data and serial data is provided between a controller and a key input unit. The serial data is converted into parallel data through the interface chip and outputted to the key input unit, and the parallel data of the key input unit is converted into serial data through the interface chip and transmitted to the controller. Thus, the key input unit having a large number of keys can be controlled by using with a small number of controller pins, and thus, it is easy to design a mobile terminal. |
