The blackboard adopts silver nanowires film, full-lamination technology, high definition, high sensitivity, built-in dual OS, which is a multi-functional teaching device integrating interactive teaching, digital demonstration, multimedia speech, touch operation and handwriting input.The operation is easy and intuitive, fully digital and intelligent control. It can be written, modified and deleted on the screen by fingers or any opaque objects. It is an ideal tool for modern education. Compatible with projector, plug-in OPS computer, video booth, electric curtain, classroom lighting and other peripheral equipment to meet the needs of different teaching scenarios. It features the functions of writing, display and remote teaching, breaks the tanglesome constraints of traditional teaching, realizes the interactive teaching between teachers and students in a cinch, and brings efficient teaching methods.