touch screen display stands.When there is no touch on the??transmitted signal and received signal waveforms , the received signal waveform is exactly the same as the reference waveform. When a finger or other object capable of absorbing or blocking the sound wave energy touches the screen, the sound wave energy that the X axis passes upwards through the finger part is partially absorbed, reflecting that the waveform has an attenuation gap on the receiving waveform, that is, at a certain time position.

touch screen display stands.When there is no touch on the??transmitted signal and received signal waveforms , the received signal waveform is exactly the same as the reference waveform. When a finger or other object capable of absorbing or blocking the sound wave energy touches the screen, the sound wave energy that the X axis passes upwards through the finger part is partially absorbed, reflecting that the waveform has an attenuation gap on the receiving waveform, that is, at a certain time position. 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.