The mouse is the external input device of the computer and the indicator of the vertical and horizontal coordinate positioning of the computer display system, so it is named because it looks like a mouse (Hong Kong and Taiwan are mice).

The mouse was invented by Dr. douglas engelbart of the University of California, Berkeley in 1964, when douglas engelbart was working at Stanford Research Institute (SRI).

Working principle.

The rubber ball is transmitted to the wafer pulse signal sensor through the light emitting diode and phototransistor on the grating wheel.

Light source pulse signal sensor of light-emitting semiconductor and photoelectric sensor irradiated by infrared scattered light spots.

Using DRF technology, the information of mouse movement, key pressing or lifting on the X or Y axis is converted into wireless signals and sent to the host.