What type of device is a projector?

A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen

Explanation:

A projector is an output device that projects an image onto a large surface, such as a white screen or wall. It may be used an alternative to a monitor or television when showing video or images to a large group of people.

Explanation:

Most projectors can be used for either front or rear projection. The difference is the screen, which is opaque white for front projection and semi-transparent grey for rear projection. Front projection sends the image from the position of the audience to the front of the screen. This is by far the most common method since it does not require an empty space behind the screen.

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