What is an overhead projector ?

Question

What is an overhead projector ?

asked Jan 28, 2022 by anonymous

1 Answer

Answer :

An overhead projector is a type of device that can be used to present a fixed image in a slide form on a specific screen. It was first used in the American military during World War II in the last century to present various war tactics or situations to the military. Since then it has been used in other meetings , councils , business meetings etc.

answered Jan 28, 2022 by anonymous

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