All involve using a device that takes data from the VGA port of your personal computer. First, many schools already have a projection system that can display information from a personal computer. Basically, anything that can be shown on the computer screen can be displayed through the projection system. Second, you can use a device that sits on top of an overhead projector to display your screen shows. In essence, this device makes a transparency of what ever is on the display screen of the computer.
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This cost will be recovered, of course, as students enroll in your classes and buy the manuals. Other purchasing options and our return policy.