touch screen display small.The principle of the infrared touch screen is very simple, just add a light spot distance frame to the display, there is no need to add a coating on the screen surface or connect the controller. Infrared emitting tubes and receiving tubes are arranged on the four sides of the light spot from the frame, forming an infrared net on the screen surface. When a user touches a certain point on the screen with his finger, he will block the two infrared rays passing through the position, and the computer can calculate the position of the touch point in real time. Because the infrared touch screen is not affected by current, voltage and static electricity, it is suitable for some harsh environmental conditions. Its main advantages are low price, easy installation, no need for cards or any other controller, and it can be used on computers of all grades. However, because the frame is only added to the ordinary screen, the infrared transmitting tube and receiving tube around the frame are easily damaged during use.

touch screen display small.The principle of the infrared touch screen is very simple, just add a light spot distance frame to the display, there is no need to add a coating on the screen surface or connect the controller. Infrared emitting tubes and receiving tubes are arranged on the four sides of the light spot from the frame, forming an infrared net on the screen surface. When a user touches a certain point on the screen with his finger, he will block the two infrared rays passing through the position, and the computer can calculate the position of the touch point in real time. Because the infrared touch screen is not affected by current, voltage and static electricity, it is suitable for some harsh environmental conditions. Its main advantages are low price, easy installation, no need for cards or any other controller, and it can be used on computers of all grades. However, because the frame is only added to the ordinary screen, the infrared transmitting tube and receiving tube around the frame are easily damaged during use. IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.