Abstract: The present invention is related to a light-emitting keyboard, comprising: a light guide having a light entrance surface, a bottom surface and a light exit surface; a light source provided adjacent to the light entrance surface of the light guide; a first reflector disposed underneath the bottom surface of the light guide to reflect the light originated from the light source to enter into said light guide; a second reflector disposed on top of said light exit surface of the light guide; a membrane circuit board disposed on top of said second reflector, said membrane circuit board being provided with an elastic member; a supporting plate disposed on top of the membrane circuit board; a scissor assembly engaged with said supporting plate and provided thereon; and a keycap supported by said scissor assembly.

Abstract: The present invention is related to a light-emitting keyboard, comprising: a light guide having a light entrance surface, a bottom surface and a light exit surface; a light source provided adjacent to the light entrance surface of the light guide; a first reflector disposed underneath the bottom surface of the light guide to reflect the light originated from the light source to enter into said light guide; a second reflector disposed on top of said light exit surface of the light guide; a membrane circuit board disposed on top of said second reflector, said membrane circuit board being provided with an elastic member; a supporting plate disposed on top of the membrane circuit board; a scissor assembly engaged with said supporting plate and provided thereon; and a keycap supported by said scissor assembly.

Abstract: A wireless mouse with a power-saving display is disclosed. The wireless mouse has a power-detection module disposed therein to detect a power status of a power supply module inside the wireless mouse. Then, the wireless mouse can learn the power status of the power supply module and display the power status on an e-paper display module disposed in the wireless mouse. As a result, the user of the wireless mouse may be informed of the status of the wireless mouse in real time based on a messages displayed on the e-paper display module.

Abstract: A key structure comprises a base, a key support structure consisting of a first frame and a second frame, and a key cap, characterized in which a paired pivots are disposed on the first frame, and a paired duplex bearing members are configured beneath the key cap for jointing the paired pivots of the first frame.

Abstract: A detachable wrist rest for a keyboard has a generally U-shaped body with the recessed portion conformed to and firmly attached to the lower part of keyboard by a pair of snap based mechanisms each provided between a side junction contacting keyboard and wrist rest including a first snap member on an outer surface of the keyboard and a second snap member on an inner surface of the wrist rest. Disposition of first and second snap members may be reversed. Various snap based mechanisms are disclosed.

Abstract: A water-proof keyboard, wherein proper grooves are installed on the upper cover of the keyboard, and a plurality of drain holes are installed on the front edge of each groove. The drain holes are penetrated to the bottom of the upper cover and drain tubes are connected therebelow. A plurality of sleeves with respect to the drain tubes are installed on the seat of the keyboard. Within each sleeve is formed with a respective through hole each drain tube inserts into the respective through hole within the sleeve. In the water-proof keyboard of the present invention, the liquid flowing into the keyboard may drain out rapidly so that the liquid flowing into the circuit unit can be prevented effectively. Therefore, the circuit will not short or destroyed.

Abstract: A digital/analog sound synthesizing circuit comprises an RC oscillator outputting a system basic frequency, a timing generator converting the basic frequency into timing signals, a sound synthesizer producing sound numerical code data, and a digital/analog converter outputting an analog signal to drive a speaker. A voltage stabilizing circuit controls the RC oscillator and the digital/analog converter to eliminate sound frequency and volume instability.