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  2. Amazon’s Portable Projector With 25,000 Reviews Is Marked ...

    www.aol.com/amazon-portable-projector-25-000...

    This portable projector features an HDMI, VGA, AV, and USB output, so you can connect it to your phone, USB drive, gaming console and more. It stores easily thanks to its small size and it comes ...

  3. The best portable projector I've ever used is down to a ... - AOL

    www.aol.com/lifestyle/best-portable-projector...

    "Elfin," indeed! This mini projector stands less than two inches high, but delivers crisp 1080p video and comes with Android 10.0 built in. (Photo: Xgimi)

  4. Projector - Wikipedia

    en.wikipedia.org/wiki/Projector

    A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers .

  5. Document camera - Wikipedia

    en.wikipedia.org/wiki/Document_camera

    Portable and desktop models allow a working environment similar to an overhead projector. Many document camera users appreciate the added flexibility regarding the variety of objects that can be displayed to an audience.

  6. Overhead projector - Wikipedia

    en.wikipedia.org/wiki/Overhead_projector

    An overhead projector works on the same principle as a slide projector, in which a focusing lens projects light from an illuminated slide onto a projection screen where a real image is formed. However some differences are necessitated by the much larger size of the transparencies used (generally the size of a printed page), and the requirement ...

  7. Things Boomers Took for Granted That are Obsolete Now

    www.aol.com/things-boomers-took-granted-obsolete...

    Overhead Projectors. ... which introduced the first USB port — and dropped support for the aging floppy disk. ... Google Just Killed Portable GPS Devices." The second article was right. Advances ...

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