Early LCD systems are used in conjunction with the Overhead Projector LCD system has its own light source, but a system that was used to create the image and rely on light source from the Overhead Projector, because the projection on the need to use two pieces is an LCD system used to create the image (the system that was used to create the picture, LCD or LCD Panel, which called at that time, the size is quite large) and used in the Overhead Projector, which is light used in the projector to the screen image, easy to use, until in the end. The yearly production and cancelled.
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