The touch screen is the touch screen. Touchscreen (touchscreen), also known as "touchscreen" or "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts. When touched on the on-screen graphic button, the touch on the screen The feedback system can drive various connection devices according to a pre-programmed program, which can be used to replace the mechanical button panel and create a live-action audio and video effect through the liquid crystal display. As the latest computer input device, the touch screen is the simplest, most convenient and natural way of human-computer interaction. It gives multimedia a new look and is an attractive new multimedia interactive device. Mainly used in public information inquiry, leadership, industrial control, military command, electronic games, ordering a la carte, multimedia teaching, real estate pre-sales.