A slide
show is a series of pictures or pages of information, often displayed
on a large screen using a video projector. The first slide shows were
done with pictures on pieces of glass, to be later replaced photographic
film slides in the 1940s. As the technology improved, overhead
projectors began to be used to project a picture on a screen and the
slides were made with transparent slide media, about the size of a piece
of paper. Printers could print text and images on this media or
dry-erase markers could be used to write and draw on the media.
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