How to operate the touch screen

- Apr 17, 2019-

Now you may find in many public places, a kind of computer input device that everyone can use, which is the computer that allows users to directly operate the screen with their fingers. This computer is actually the touch screen that people often talk about.The touch screen is not only suitable for China's national conditions of multimedia information inquiry, but also has many advantages such as durability, quick response, saving space and easy communication.Using the touch screen, our users can operate the host computer as long as they lightly touch the figures or words on the computer screen with their fingers, thus making human-computer interaction more straightforward. This technology greatly facilitates those users who do not understand computer operation.Many Banks, hospitals, hotels, shopping malls, sales halls, schools, libraries, museums, theaters, exhibitions, railway stations, large bookstores, tourist resorts, communities and other large public places now use touchscreen technology.So do you know how touch screens work?Are you familiar with the operation of touch screen?


Generally speaking, when we operate the touch screen, we must first touch the touch screen installed in the front of the display with a finger or other objects, and then the system will locate and select information input according to the icon or menu position of the finger touch.The touch screen is composed of touch detection component and touch screen controller.The touch detection part is installed in front of the display screen to detect the user's touch position.The main role of the touch screen controller is to receive touch information from the touch point detection device, and convert it into contact coordinates, and then sent to the CPU, it can also receive commands from the CPU and execute.

1, if you are using a capacitive touch screen, so it is recommended that you use for the first time, first to correctly installed according to the requirements of specification required for capacitive touch screen driver, and then, in turn, click on "start" on the screen with your fingers "program"/" Microtouch Touchware "to run the screen calibration procedures, calibration is complete, the system will automatically after the calibration data stored in the register of the controller, then reboot the system after it without calibration screen again.

2. If the display resolution or display mode of the touch screen is changed again during operation of the capacitive touch screen, or the refresh frequency of the touch screen controller is adjusted by itself, and the cursor and the touch point are not corresponding, the touch screen system must be re-calibrated.

3, in order to ensure the normal operation of the touch screen system, in addition to ensuring the correct installation of the system software, we must also remember not to install two or more than two kinds of touch screen drivers on a host computer, which will easily lead to conflicts in the operation of the system, so that the touch screen system can not be used normally.

4, when using resistive touch screen, if it is found that the cursor up or only move in the local area, you can check the touch area of the touch screen is pressed by other touch objects is always the main, for example, once the touch screen was pinned under a display shells or cabinet housing, have been touched is equivalent to a certain point, then feedback to the controller the coordinates of the location is not accurate, the cursor is, of course, also can't correct positioning.If the cabinet housing presses the touch area, you can increase the distance between the cabinet and the display screen. If the display housing presses the touch area, you can try to loosen the screw of the display housing to have a try.

5, the author has mentioned, once the system is changing the display resolution, adjust the screen size, and installation for the first time have appear no or drift, click to start the application in the positioning of the program, but everybody when positioning, best to use more fine pen or fingertip to locate, such comparison.

6, surface acoustic wave touch screen work environment demand is higher, it must work in a clean, no dust pollution of the environment, but also touch screen periodically clean the dirt on the surface, otherwise, the dust cover on the reflection stripe around the touch screen or transducer, will influence the correct positioning of the system.

7, do not let the surface of the touch screen water droplets or other soft things stuck to the surface, otherwise the touch screen is easy to think that hand touch caused by the surface of the sound screen is not allowed.In addition, when cleaning the dirt on the touch screen surface, you can carefully wipe it from the center of the screen with a soft cloth or cleaner, or use a piece of dry soft cloth dipped in industrial alcohol or glass cleaning liquid to clean the touch screen surface.

8, if use your hands to touch or other touching surface acoustic wave touch screen, touch screen is very slow, it shows that most likely touch screen system is obsolete, the internal clock frequency is too low, or is due to the touch screen surface is water in the mobile, restore fast response to touch screen, must replace or upgrade system, or use dishcloth dry the water on the surface of the touch screen.

9. The touch screen generally USES the serial port for signal transmission, and takes the signal from PS/2 port, while the TPS screen takes the power directly from the host power supply.If the indicator light is not on, it means no signal has been received. The PS/2 line on the control box may be broken.If the light is on but still does not flash, the control box is broken, so we have to replace the control box.If the replacement of the control box still fails, it may be that the screen is pressed too tightly, and the screws around it need to be loosened a little, because the touch screen is made of special materials, and it is not easy to damage itself.If the serial port is bad or disabled, the driver cannot be installed because it will automatically look for the serial port when the driver is installed.Even if it can be installed, the mouse will not move or cannot be located.It is best not to use the mouse to determine the quality of the serial port, may be 9 for them to use a different way.If the screen is pressed, or the ground wire is not properly connected, it will not be able to locate.If some areas cannot be clicked or the response is slow, it may be dust influence, need to open the shell to remove dust.

10. When touching a certain position of the capacitive touch screen with your finger and the touch screen has no response, it is likely that the ITO coating on the position should be touched is damaged or scratched, and the only way is to buy a new touch screen.

11, when a finger touch the surface acoustic wave touch screen of a certain position, touch screen without any reaction, it is likely to be touched position the reflection stripe scraped the local be overwritten or hard objects, for the former one as long as with a soft cloth to wipe off the touch location is ok, for the latter case, we can only buy a new touch screen.

12, if the user is operating the touch screen, the direction of the touch is to the left, but the system cursor is moving to the right, the failure may be due to the control box and the touch screen connected to the joint or the touch screen left and right position installed in the reverse, the user only need to change the direction of the good.

13. When it is confirmed that the connection line to the keyboard port of the host computer is correctly connected and the serial port number selected in the driver installation process and the serial port number actually connected to the touch screen are correct, the hard disk can be reformatted and the latest driver required by the system can be installed when the touch screen of the surface acoustic wave screen still fails to work.

14. When calibrating the surface acoustic touch screen, make sure that the MOUSEWARE software installed in the system cannot conflict with the touch screen driver, otherwise the calibration operation will not be correct.

15, user on capacitive touch screen operation, if found system no response, can be to check if touch screen attachment, check first to take the supply part through a keyboard header will be a head of even the keyboard port on the host, and then connect the other end computer keyboard, and will pick up to 5 v power supply a serial port communication adapter inserted into the host.