Educators have been using projectors to integrate technology into classrooms since the late 1800s, and today’s projectors maintain the same basic purpose: transmitting images ... of overhead ...

The projector that most of today’s adults would consider most synonymous with their days at elementary, middle and high school is most likely the overhead ... transparency that was a by-product of the ...

[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 ...