samsung interactive touch screen display.The figure shows the PCB emission top (TX) receiving layer and the bottom (RX) layer , in its interior , clock chip when a 240-kHz square wave , it is from TX layer transmission to the RX layer. A capacitor is formed between these two layers. When a grounded finger approaches the plastic mask , some capacitor edge areas are bypassed , which will cause current changes to the ADC or CDC . The CDC then measures the change in current based on the change in capacitance caused by finger movement.

samsung interactive touch screen display.The figure shows the PCB emission top (TX) receiving layer and the bottom (RX) layer , in its interior , clock chip when a 240-kHz square wave , it is from TX layer transmission to the RX layer. A capacitor is formed between these two layers. When a grounded finger approaches the plastic mask , some capacitor edge areas are bypassed , which will cause current changes to the ADC or CDC . The CDC then measures the change in current based on the change in capacitance caused by finger movement. 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.