A data projector can cost between twice and 10 times as much as an overhead projector, as of July 2013. Lamp prices likewise exceed those of analog projection equipment, coming in at $300 for a ...

[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 we ...

In The Overhead Projector: Don’t Overlook It (Part 1), I explained why it’s better to use a projector (be it an old-fashioned overhead or LCD) than to write on the board. Now we turn to how to ...

How to Fix a Shadow in an Overhead Projector. Overhead projectors use a bright lamp and mirrors to display text or images from a transparency sheet on a wall or screen. If your projector ...

The ipico Hand-held Projector costs $129 and works with phones older than the iPhone 5 (such as the 4s, 4 and 3GS. It comes with a short USB cable for charging the integrated Li-Ion battery.

A lot has been said and written about the earmark Barack Obama sought for a new $3 million overhead projector at the Adler Planetarium since John McCain raised it in Tuesday night’s debate. And ...

A lot has been said and written about the earmark Barack Obama sought for a new $3 million overhead projector at the Adler Planetarium since John McCain raised it in Tuesday night’s debate. And ...

The second-best way: It's an all-in-one computer with a touch mat that acts as a second screen, and an overhead projector/camera that can scan 3D images. It starts at $1,899, and ships next month.

The Overhead Projector: Don’t Overlook It (Part 1) ... It’s much easier for students to see and read notes projected onto an overhead screen than those scrawled onto the board.