The principle of work.4 composition is composed of computer, projector, program and the board. The computer is connected with projector and interactive board which can be continued through the late USB to computer or some models can be connected through. Bluetooth or infrared (Wireless) for the projector to display from the computer screen to the board to protect genius. The action on the display board is the skin intelligent signal transmission data with computers ผ่านการเชื่อมต่อ line USB or connections. Wireless and interpretation through the program installed on the work. The computer system through the touch board surface genius immediately. To lack something, not by plucking, lack active board or Interactive White Board that we be able to control the computer screen by using the. Pen, fingers, and other equipment, touch to active board or Interactive White Board.
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