As with a lot of classroom tech, overhead projectors declined in use as more high-tech options for classroom visual aids became available. In the 1980s, data projectors that could be connected to a TV ...

[Joel] wanted a huge-screen TV on the cheap, so he converted an overhead projector to something he can use with his XBox. Using a bare LCD panel with an overhead projector is a decades-old hack ...

The U.S. Army used a version of the overhead projector for training purposes during World War II, according to the National Museum of American History. A Brief History: A data projector takes signals ...