interactive whiteboards in the classroom price. Reduce the software procurement cost: use the cloud terminal only needs to install a desktop virtualization software on the server side, and the server end uniformly manages the cloud terminal user, that is, the student terminal, all the student terminals share the server software and hardware resources, so the cloud image cloud terminal network only needs A server software certification; and how many of them are used: How many software certifications must be purchased, which increases the cost of the software.. 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.