touch screen lcd olx.The initial idea of ??the basic working principle of the capacitive screen is: a person is an artificial ground (zero potential body), and a very low voltage is applied to the working surface. When the user touches the screen, a small current is absorbed by his finger. This The current points flow from the electrodes on the four corners or four sides of the touch screen, and the current flowing through the four electrodes is theoretically proportional to the distance from the finger to the four corners. The controller calculates these four current ratios accurately by Touch the location of the point.

touch screen lcd olx.The initial idea of ??the basic working principle of the capacitive screen is: a person is an artificial ground (zero potential body), and a very low voltage is applied to the working surface. When the user touches the screen, a small current is absorbed by his finger. This The current points flow from the electrodes on the four corners or four sides of the touch screen, and the current flowing through the four electrodes is theoretically proportional to the distance from the finger to the four corners. The controller calculates these four current ratios accurately by Touch the location of the point. 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.