For operational convenience, people use a touch screen instead of a mouse or keyboard. When working, the touch screen installed on the front of the display is first touched with a finger or other object, and then the system selects the positioning information input according to the icon or menu position touched by the finger. The touch screen is composed of a touch detection component and a touch screen controller; the touch detection component is installed in front of the display screen to detect the user's touch position and accept the evacuation touch screen controller; and the touch screen controller mainly receives touch from the touch point detection device. Information, and convert it into contact coordinates, and then sent to the CPU, it can accept the command sent by the CPU and execute it.
In order to better help everyone operate the touch screen, the following are some methods and techniques:
If the capacitive touch screen is operated in the middle, the display resolution or display mode of the touch screen is changed again, or the refresh frequency of the touch screen controller is adjusted by itself, and the cursor and the touch point cannot be matched, the touch screen system must be re-performed. Calibration operation.
In order to ensure the normal operation of the touch screen system, besides ensuring the correct installation of the system software, it is necessary to remember not to install two or more touch screen drivers on a host computer. This may easily lead to conflicts during system operation. As a result, the touch screen system cannot be used normally.
Do not allow water drops or other soft objects on the surface of the touch screen to adhere to the surface, otherwise the touch screen may easily mistakenly believe that the surface acoustic wave screen is inaccurate due to hand touch. Also, when removing dirt from the surface of the touch screen, you can use a soft, dry cloth or cleaner to carefully wipe it from the center of the screen, or use a soft, dry cloth dipped in industrial alcohol or a glass cleaner to clean the touch screen surface. If the surface acoustic wave touch screen is touched with a hand or other touching object, the touch screen response is very sluggish. This indicates that the touch screen system is old, the internal clock frequency is too low, or the water droplets on the surface of the touch screen are moving, and it is necessary to let The touch screen recovers quickly and you must replace or upgrade the system, or wipe the water droplets on the surface of the touch screen with a rag. If the user operates the touch screen, the direction of the touch movement is to the left, but the cursor of the system is moved to the right. This kind of failure may be due to the connection of the control box and the touch screen being reversed or the left and right positions of the touch screen being reversed. It would be nice to re-direct the direction.
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