Touch screen working principle and system composition
May 02, 2018
Touch screen works:
The basic principle of the touch screen: When a touch screen mounted on the front of the display is touched with a finger or other stage, the touched position (in the form of coordinates) is detected by the touch screen controller, and the input information is determined through the interface.
The touch screen system includes:
Touch screen controller + touch detection device
Touch screen controller: receives touch information from a touch point detection device, converts it into contact coordinates, and sends it to the CPU. His colleague can receive commands from the CPU and execute it.
The touch detection device is generally installed at the front end of the display, detects the user's touch position when it is mainly used, and transmits the information to the touch screen controller.
