whiteboard 7 feet.The interactive whiteboard can communicate with the computer, connect the electronic whiteboard to the computer, and use the projector to project the contents of the computer onto the electronic whiteboard screen. With the support of a dedicated application, a large screen can be constructed and interacted with. Collaborative meeting or teaching environment. Using a specific stylus instead of a mouse to operate on a whiteboard, you can run any application that can edit, annotate, save, etc. any operation that can be done on the computer using the keyboard and mouse. Interactive whiteboards can be divided into five categories according to the principle: electromagnetic induction, infrared, ultrasonic, resistance pressure, CCD, etc. Each technology has different characteristics and advantages and has a certain share in the market. According to the analysis report of the international authoritative market research institute, in recent years, the electronic whiteboard of pressure sensing technology has dominated the market in the international market, accounting for about 2/3 of the market share, followed by ultrasound and infrared technology, accounting for about 1/6. Market share.