Also known as the physical display platform, when it is connected with the projector and TV, it can clearly display materials, handouts, physical objects and slides, and it is one of the indispensable teaching equipment in multimedia classrooms. An ordinary video display platform consists of three parts: camera, light source and desktop. There are also a series of interfaces on the back of the display platform. Some high-end display platforms also include infrared remote controllers, computer image acquisition adapters, liquid crystal displays and other accessories. The video display stand can be used for teaching in various subjects: liberal arts can put a wide variety of teaching materials and various teaching books directly on the desktop, which can be clearly displayed through the application of lighting and the adjustment of amplification function; Chemistry and physics subjects can be tested directly on the display platform for each student to observe clearly; Biology and medicine can observe the magnified images of objects through the cooperation of lenses (microscopes, etc.). ) On the display stage. Then it can be used with output and input devices such as multimedia projector, large-screen rear projection TV, ordinary TV, liquid crystal display, video recorder, vcd, DVD player and microphone. Video display stands are widely used in information technology teaching.