qomo interactive screen. 2. Absolute coordinate system. The touch screen is an absolute coordinate system, you can click where you want to choose. The essential difference with a relative positioning system such as a mouse is the intuitiveness of once in place. The characteristic of the absolute coordinate system is that each positioning coordinate is not related to the last positioning coordinate. The touch screen is physically a set of independent coordinate positioning systems. The data of each touch is converted to the coordinates on the screen through calibration. Regardless of the circumstances, the output data at the same point of the control screen is stable. If it is unstable, then the touch screen cannot guarantee absolute coordinate positioning, and the point is not accurate. This is the most feared problem of touch screen: drift. In principle, any touch screen that cannot guarantee that the same sampling data is touched every time will inevitably drift. But for the touch screen with good performance and quality, the drift situation is not very serious.

qomo interactive screen. 2. Absolute coordinate system. The touch screen is an absolute coordinate system, you can click where you want to choose. The essential difference with a relative positioning system such as a mouse is the intuitiveness of once in place. The characteristic of the absolute coordinate system is that each positioning coordinate is not related to the last positioning coordinate. The touch screen is physically a set of independent coordinate positioning systems. The data of each touch is converted to the coordinates on the screen through calibration. Regardless of the circumstances, the output data at the same point of the control screen is stable. If it is unstable, then the touch screen cannot guarantee absolute coordinate positioning, and the point is not accurate. This is the most feared problem of touch screen: drift. In principle, any touch screen that cannot guarantee that the same sampling data is touched every time will inevitably drift. But for the touch screen with good performance and quality, the drift situation is not very serious. 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.