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  2. New iPhone charging feature turns itself on by default. What ...

    www.aol.com/news/iphone-charging-feature-turns...

    A feature in a recent iOS update for iPhone, introduced in October, is suddenly being noticed. And not everyone likes it.The goal of clean energy charging, introduced in iOS 16.1, is so iPhone ...

  3. Notification LED - Wikipedia

    en.wikipedia.org/wiki/Notification_LED

    A notification LED on a smartphone. A Notification LED is a small RGB or monochrome LED light usually present on the front-facing screen bezel (display side) of smartphones and feature phones whose purpose is to blink or pulse to notify the phone user of missed calls, incoming SMS messages, notifications from other apps, low battery warning, etc., and optionally to facilitate locating the ...

  4. Power-on self-test - Wikipedia

    en.wikipedia.org/wiki/Power-on_self-test

    The keyboard itself was an intelligent device and had its own processor and 4 kilobytes of RAM for keeping a buffer of the sequence of keys that were being pressed, thus can communicate with the user if a fault is found by flashing its main LED in sequence:

  5. Emergency light - Wikipedia

    en.wikipedia.org/wiki/Emergency_light

    An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. In the United States, emergency lights are standard in new commercial and high occupancy residential buildings, such as college dormitories , apartments , and hotels .

  6. Lighting control system - Wikipedia

    en.wikipedia.org/wiki/Lighting_control_system

    The LED (light-emitting diode) market is expected to reach $5 billion in 2007, and the solid-state lighting market is predicted to be $50 billion in 15–20 years, as stated by E. Fred Schubert, [18] Wellfleet Senior Distinguished Professor of the Future Chips Constellation at Rensselaer.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Liquid-crystal display - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_display

    The LCD itself is only a light valve and does not generate light; the light comes from a backlight that is either fluorescent or a set of LEDs. Brightness is usually stated as the maximum light output of the LCD, which can vary greatly based on the transparency of the LCD and the brightness of the backlight.

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