digital whiteboard skype for business. ????In practice, using the electronic whiteboard can adjust the student's brain excitement, reduce fatigue, rejuvenate, and let them use their unintentional attention to accept knowledge happily. The feedback and record of the electronic whiteboard re-energize their learning spirit, maintain their good learning mentality, achieve the purpose of expanding thinking and improving the efficiency of practice, so that the main role of students can be played in the classroom, so that all students can ??eat?? Get enough, "eat well." . 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.