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  2. Display resolution standards - Wikipedia

    en.wikipedia.org/wiki/Display_resolution_standards

    A chart showing the number of pixels in different display resolutions. A display resolution standard is a commonly used width and height dimension (display resolution) of an electronic visual display device, measured in pixels. This information is used for electronic devices such as a computer monitor.

  3. LCD projector - Wikipedia

    en.wikipedia.org/wiki/LCD_projector

    The LCD system did not have a light source of its own: it was built on a large "plate" that sat on top of the projector in place of transparencies. This provided a stop-gap solution in the era when the computer was not yet a universal display medium, creating a market for LCD projectors before their current main use became popular.

  4. Projection screen - Wikipedia

    en.wikipedia.org/wiki/Projection_screen

    An overhead projector projecting onto a pull-down screen. Pull-down screens (also known as manual wall screens) are often used in spaces where a permanently installed screen would require too much space. These commonly use painted fabric that is rolled in the screen case when not used, making them less obtrusive when the screen is not in use.

  5. Fix problems reading or receiving AOL Mail

    help.aol.com/articles/fix-problems-reading-or...

    You may need to check any filters you've created to make sure your messages are correctly organized. Check your block settings. Make sure the option "Block All Senders Except Contacts" under "Mail Settings --> Block Senders" is unchecked. If checked, you will not receive messages from anyone not in your contacts. Learn about delivery delays

  6. 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 .

  7. How and why to buy a projector in 2019 - AOL

    www.aol.com/news/2019-09-25-the-best-projector...

    A 100-inch 4K screen? To get that the usual way you might be looking at paying close to six figures. Luckily, there's another option that can get you even more, up to a 150-inch screen for a ...

  8. Screen-door effect - Wikipedia

    en.wikipedia.org/wiki/Screen-door_effect

    The screen-door effect (SDE) is a visual artifact of displays, where the fine lines separating pixels (or subpixels) become visible in the displayed image. This effect can be seen in digital projector images

  9. Overhead projector - Wikipedia

    en.wikipedia.org/wiki/Overhead_projector

    In the early 1980s–1990s, overhead projectors were used as part of a classroom computer display/projection system. A liquid-crystal panel mounted in a plastic frame was placed on top of the overhead projector and connected to the video output of the computer, often splitting off the normal monitor output.