Entrance-projection interactive whiteboards Have got a online video projector before the whiteboard. A drawback of front-projection whiteboards is that the presenter, standing before the monitor, have to lengthen his / her arm with or with out a stylus to prevent casting a shadow. To start out select a topic, then https://yealink-meeting-board-8692457.bloginder.com/34832354/everything-about-interactive-whiteboard