plus electronic whiteboard. The design and development process of the WOE board resource library includes five stages: requirements analysis, system design, resource library development, test modification, maintenance and update. The system design includes function analysis, overall structure design, resource content analysis and preparation.. 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.