An electronic apparatus, characterized by: a display for displaying information; an input interface disposed adjacent to the display, the input interface comprising: a first, rectangular, touch sensing region having a plurality of touch pads (231, 232, 233, 234, 235) arranged in a radial array therein; a second touch sensing region adjacent to a side of the first touch sensing region, the second touch sending region having a plurality of touch pads (241, 242, 243, 244, 245, 246, 247, 248, 249) arranged in a matrix array therein; and a third touch sensing region adjacent to another side of the first touch sensing region, the third touch sensing region having a plurality of touch pads (251, 252, 253, 254, 255, 256, 257, 258, 259) arranged in a matrix array therein; wherein the first touch sensing region is positioned between and touches the second touch sensing region and the third touch sensing region, and the first touch sensing region, the second touch sensing region and the third touch sensing region as a whole form a substantially rectangular shape; a controller, electrically coupled to each touch pad (231, 232, 233, 234, 235, 241, 242, 243, 244, 245, 246, 247, 248, 249, 251, 252, 253, 254, 255, 256, 257, 258, 259) in the input interface, for detecting a user input on the input interface and generating a plurality of sensing signals according to the user input; and a processor, electrically coupled to the controller, for executing a corresponding function according to the plurality of sensing signals. a display for displaying information; an input interface disposed adjacent to the display, the input interface comprising: a first, rectangular, touch sensing region having a plurality of touch pads (231, 232, 233, 234, 235) arranged in a radial array therein; a second touch sensing region adjacent to a side of the first touch sensing region, the second touch sending region having a plurality of touch pads (241, 242, 243, 244, 245, 246, 247, 248, 249) arranged in a matrix array therein; and a third touch sensing region adjacent to another side of the first touch sensing region, the third touch sensing region having a plurality of touch pads (251, 252, 253, 254, 255, 256, 257, 258, 259) arranged in a matrix array therein; wherein the first touch sensing region is positioned between and touches the second touch sensing region and the third touch sensing region, and the first touch sensing region, the second touch sensing region and the third touch sensing region as a whole form a substantially rectangular shape; a first, rectangular, touch sensing region having a plurality of touch pads (231, 232, 233, 234, 235) arranged in a radial array therein; a second touch sensing region adjacent to a side of the first touch sensing region, the second touch sending region having a plurality of touch pads (241, 242, 243, 244, 245, 246, 247, 248, 249) arranged in a matrix array therein; and a third touch sensing region adjacent to another side of the first touch sensing region, the third touch sensing region having a plurality of touch pads (251, 252, 253, 254, 255, 256, 257, 258, 259) arranged in a matrix array therein; a controller, electrically coupled to each touch pad (231, 232, 233, 234, 235, 241, 242, 243, 244, 245, 246, 247, 248, 249, 251, 252, 253, 254, 255, 256, 257, 258, 259) in the input interface, for detecting a user input on the input interface and generating a plurality of sensing signals according to the user input; and a processor, electrically coupled to the controller, for executing a corresponding function according to the plurality of sensing signals.