The touch screen is a positioning device. The user can directly input coordinate information into the computer by hand. It is an input device like a mouse and a keyboard. The touch screen has many advantages, such as sturdiness and durability, fast response, space saving, and easy communication. Using this technology, you can operate the host by gently touching the icon or text on the computer display with your finger, so that the human-computer interaction is more direct. This technology greatly facilitates those who don't understand. Computer-operated users. The application range of touch screen is very broad, mainly for public information query, such as business query of telecommunications bureau, tax bureau, bank, electric power and other departments; information query on city streets; in addition, it can also be widely used in corporate office, industrial control, military command , Video games, ordering songs and dishes, multimedia teaching, real estate pre-sales, etc. In the future, touch screens will also enter the home.
Touch screen type
One: From the installation method, the touch screen can be divided into: plug-in type, built-in type and integral type. The plug-in touch screen is to install the touch detection device of the touch screen system directly in front of the display device. This kind of touch screen is easy to install and is very suitable for temporary use. The built-in touch screen is to install the touch detection device in the casing of the display device, in front of the picture tube. When manufacturing the display device, the touch detection device is made on the picture tube, so that the display device directly has the touch function, which is the integral touch screen.
Two: Differentiating touch screens from technical principles can be divided into five basic categories: vector pressure sensing touch screens, resistive touch screens, capacitive touch screens, infrared touch screens, and surface acoustic wave touch screens. Among them, the vector pressure sensing technology touch screen has withdrawn from the stage of history; the infrared technology touch screen is inexpensive, but its frame is fragile, prone to light interference, and distortion in the curved surface; the capacitive technology touch screen has a reasonable design concept, but its image distortion problem is difficult to obtain Fundamental solution; the resistive technology touch screen has accurate positioning, but its price is quite high, and it is easy to be scratched; the surface acoustic wave touch screen solves the various defects of the previous touch screen, is clear and not easy to be damaged, suitable for various occasions, the disadvantage is the screen surface If there are water droplets and dust, the touch screen will become dull, or even not work. According to the working principle of the touch screen and the medium for transmitting information, the touch screen is divided into four types, which are resistive type, infrared type, capacitive sensing type and surface acoustic wave type.
How to operate the touch screen effectively
In order to better help you operate the touch screen, here are some operating methods and techniques:
If you change the display resolution or display mode of the touch screen again during the operation of the capacitive touch screen, or adjust the refresh frequency of the touch screen controller by yourself, and feel that the cursor cannot correspond to the touch point, you must perform the touch screen system again. Calibration operation.
In order to ensure the normal operation of the touch screen system, in addition to ensuring the correct installation of the system software, you must also remember not to install two or more touch screen drivers on a host, which will easily cause conflicts during system operation. As a result, the touch screen system cannot be used normally.
Do not let water droplets or other soft things stick to the surface of the touch screen, otherwise the touch screen is easy to mistakenly believe that the surface acoustic wave screen is inaccurate due to hand touch. In addition, when removing dirt on the surface of the touch screen, you can wipe the surface of the touch screen carefully with a soft dry cloth or detergent from the center of the screen, or use a dry soft cloth dipped in industrial alcohol or glass cleaning fluid to clean the surface of the touch screen. If you touch the surface acoustic wave touch screen with your hands or other touch objects, the touch screen response is very slow, which means that the touch screen system is probably out of date, the internal clock frequency is too low, or the water droplets on the surface of the touch screen are moving. The touch screen resumes quick response, and the system must be replaced or upgraded again, or the water droplets on the surface of the touch screen must be wiped with a rag. If the user is operating the touch screen, the direction of touch movement is to the left, but the cursor of the system moves to the right. This failure may be caused by the reverse connection of the control box and the touch screen or the left and right positions of the touch screen. The user only needs to Just change the direction again.
