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 ...

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 ...

Making an Overhead Projector Wireless. When you're using a projector to display presentations, videos or other media, you're typically limited to keeping the projector in one static location so ...

overhead projector 2 Articles Converting Transparency Sheets To An LCD Monitor. February 4, 2012 by Brian Benchoff 37 Comments . Apparently, there’s some sort of sporting event being televised ...

On January 15, 1962, Appledorn’s team internally debuted “the first overhead projector with a new Fresnel lens made with a structured-surface plastic.” Because of the plastic lens, the projectors ...

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 ...

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 ...

His solution: Use a projector, a switch he recommends for several reasons. The Overhead Projector: Don't Overlook It (Part 1) (Opinion) Leadership ...