The working principle of mouse

Rolling ball mouse: The rubber ball is driven to the grating wheel with light-emitting diodes and phototransistor wafer pulse signal sensor.

Optical mouse: a light source pulse signal sensor with light-emitting semiconductors and photoelectric sensors that illuminate particles with infrared scattered light spots.

Wireless mouse: Use DRF technology to convert the information of mouse movement on the X or Y axis, button press or lift into a wireless signal and send it to the host.

The mouse is a very commonly used computer input device. It can position the cursor on the current screen, and operate the screen elements at the position where the cursor passes through the buttons and the scroll wheel device. The originator of the mouse appeared in 1968. American scientist Douglas Englebart made the first mouse in California.

The mouse is divided into mechanical mouse and optical mouse according to its working principle. The mechanical mouse is mainly composed of roller ball, roller and grating signal sensor. When you drag the mouse, the rolling ball is driven to rotate, and the rolling ball drives the roller to rotate. The grating signal sensor installed at the end of the roller collects the grating signal. The photoelectric pulse signal generated by the sensor reflects the displacement change of the mouse in the vertical and horizontal directions, and then the movement of the cursor arrow on the screen is controlled by the processing and conversion of the computer program.