Transparencies is also a kind of AV option . it gives professional appearance with little practice . it is an easy task to prepare , maintain and update. it locate reliable equipment and limit information shown at one time. but on the other side it appear to some as an outdated presentation method. hold speaker captive to the machine. it mostly provide poor and worse reproduction of photos and some graphics.So this provide the lower quality output , which put bad impression on the presentation.
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