The document cameras involve video camera projects documents, objects and images on a variety of display devices such as interactive whiteboard, screen, and television set. Document cameras are most popular ICT (information and communication technology) based teaching aid among teachers these days in the schools, colleges and the universities after interactive whiteboards. The use of Document cameras for teaching enhances the productivity of the lessons and efficiency of the instructors to deliver lessons. Students can watch their teacher writing on a sheet of a paper or displaying a two or three dimension object onto the projection screen or the interactive whiteboard with the help of Document cameras. Projector Document camera have a number of connections to the projector, interactive whiteboard, computer and television. Document cameras can capture images of the documents, 2D or 3D objects and any thing in the real time. The zoom feature of the document cameras allows the students to view the flower components, mould and rocks in minute details. The 2D, 3D objects and other scientific samples can be visually explored as a whole class by the Projector Document camera. Document cameras have side LED lights and base LED lights for viewing the things in dark room, converting the positives into the negatives, transparencies and slides. Document cameras come with remote control having controls such as zoom, color, and positive/negative, save and recall enhancing the presentations. The instructor can display books, notes and documents to the entire class with the document cameras. Projector Document camera are amazing teaching tool that can display images of static and moving object in real time onto the interactive whiteboard. With the software of the document cameras, instructor can capture these static and moving objects, and use them into their presentations. Some Projector Document camera have a facility to attach microscope eyepiece. They don’t require transparencies and displays the crystal clear images with zooming facility to view tinest details.Document cameras are replacing the overhead projectors with the advancement of the ICT (information and communication technology) in to the education field.
