why interactive displays classroom.Let's talk about infrared touch screens now. Among the large-sized touch screens, this type is the most commonly used in the world. It is also relatively mature now. Generally, it is not a problem for three to five years. There are also common small problems, such as disconnected cables, Individual areas are not identified, etc. In general, the repair rate of disconnection should be the highest, even large foreign manufacturers are unavoidable. Once the disconnection is not recognized at all, repair and repair, it is OK to return to the factory and change a line It's just going back and forth. But now there are some new technologies that seem to have improved. For example, Lianghua science and education equipment seems to use dual USB interfaces, just like the side wiring of NOKIA mobile phones. Both ends are fixed well, and they are also plug-and-plug for cleaning and maintenance. The other type is that the individual area is not recognized. This problem is not easy to solve. It is caused by the red line inside the screen that damages the tube. It is not easy to repair. The manufacturer generally does not return and is troublesome. It is important to buy an infrared screen depending on whether it is a domestic tube or an imported tube. South Korea is generally better, and the price is not cheap. In order to save costs, some manufacturers use the Guangzhou side, it will not be long before there is a problem.