In this learning process, there is a camera with light. The matter, that a teacher wants to show, should be placed on the desk under the camera. The camera captures video image and sends the signal to an LCD projector and finally the matter will be shown on a screen. A teacher can use anything to display on the screen e.g. a printed document, writing on a page, models, circuits etc. The big advantage is that teacher teaches everything sitting on his/her chair and students are getting everything on a screen clearly. If it is acquainted with public address system, it will be amazing to attend a class.

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