magnetic whiteboard paper. hold. The "three-piece" library stores a large amount of multimedia teaching resources. Therefore, the access and storage technology of large-capacity storage devices and multimedia databases is one of the technical foundations of the "three-piece" idea; the speed of computer processors is accelerating Input, access, processing, output, etc.. 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.