digital whiteboard for pc. The playback display function is mainly used, and the writing function application is less than the current use status of the electronic whiteboard. In the process of using electronic whiteboard teaching, the player uses the most of the display and display functions, such as playing pictures, videos, ppt, etc., and its writing function, hiding, real-time, coloring, recording function, etc. are not well applied.. The IQAio GR519 is an upgraded lightweight version based on the original IQAio GR511. The original dual-cavity structure was changed to a bottom-edge structure, so that the minimalist design accommodates modern classrooms and conference rooms. With one IQProjector V2 and one IQView E3821, you can achieve flexible and intelligent classroom.