Because the current presentations a presentation in a format of the image. Audio, video, or a presentation on a projector and other formats in each format, it will be installed in the chassis, which is problematic for the user in the installation of complex installation and portability that not all services the prices of high-priced equipment.That consumers cannot buy applications. But in these devices, it is necessary to use in daily life, especially for teachers who want to offer information designed to make students understand the contents in the teaching of ech still issues that the proposed equipment is not sufficient per the requirements of each school. Only by schools that have the budget to purchase at least. We have invented the device and then using the tools. Help to carry the device, to provide enough product to use, and can be produced for their own use.
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