| 主权项 |
1. A light emitting keyboard, comprising:
a plurality of keys, wherein each of the plurality of keys has a light source, an electric pad and at least one electric contact; a controller; a plurality of switches, electrically connected with the controller; a first circuit, wherein the first circuit includes a plurality of scanning circuits, each scanning circuit is electrically connected with the electric contacts of parts of the keys and the controller, and the controller scans all of the keys to detect, via the scanning circuits in order or at random, which electric contact and electric pad of which key are electrically connected with each other in a high frequency; a second circuit, wherein each light source of the plurality of keys is electrically connected with the controller through respective one of the plurality of switches; wherein the controller is for turning on and off the light source of each of the plurality of keys, and none of the light source is turned on as none of the plurality of keys is pressed; wherein as any one of the plurality of keys is pressed by a user and the electric pad of the pressed key contacts the at least one electric contact of the pressed key, a first signal from the pressed key is transmitted to the controller through the first circuit, and the controller activates the switch which is electrically connected with the light source of the pressed key to turn on the light source of the pressed key. |
