8 окт 1950 г. - OHP Projector
Описание:
An overhead projector, like a film or slide projector, uses light to project an enlarged image on a screen. In the overhead projector, the source of the image is a page-sized sheet of transparent plastic film with the image to be projected either printed or hand-written/drawn.
Добавлено на ленту времени:
Electronic Period
Дата:
Изображения:
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