Projectors are display devices and optical equipment you can use to project video, slides, and images onto a screen, particularly in a classroom setting. Most people are familiar with overhead projectors that project the contents of see-through laminates that size of bond paper.

Why do we use projector?

A projector is an output device that can take images from a computer and display them on a screen, wall or another surface. The surface projected onto is usually large, flat and lightly colored. There are either still (slides) or moving images that can be produced by projectors.

Why do we use projector and the uses of it?

Projectors reflect light; TVs emit light. Reflected light is less straining, more comfortable. Projectors produce bigger images. Larger images create easier viewing, less strain.