EST0240Z05WBX00
The basic principle of a touch screen is that when touching the touch screen installed on the front end of the display with a finger or other object, the position touched (in coordinate form) is detected by the touch screen controller and sent to the CPU through an interface (such as RS-232 serial port) to determine the input information A touch screen system generally includes two parts: a touch screen controller (card) and a touch detection device The main function of the touch screen controller (card) is to receive touch information from the touch point detection device, convert it into contact coordinates, and send it to the CPU. It can also receive commands from the CPU and execute them. The touch detection device is generally installed at the front end of the display, and its main function is to detect the user’s touch position and transmit it to the touch screen control card
EST0240Z05WBX00
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EST0240Z05WBX00
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