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How DVR Works

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The DVR, or digital video recorder, makes recording television programs simple. Learn about DVR, HD DVR and DVR tricks.

How Cell-phone Implants Work

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But even though they're a lot smaller than they used to be, modern cell phones are still far to big to fit inside your body. Learn how developers have modified existing cell phone designs to create a complete, working cell-phone implant.

How Noise-canceling Headphones Work

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Noise-canceling headphones are designed to maximize your listening experience. Learn how noise-canceling headphones keep ambient noise out without sacrificing your music's sound quality.

Can you use a cell phone as a credit card?

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Can you use a cell phone as a credit card? Yes. Nokia revealed the first fully integrated mobile-payment cell phone in 2007. See how these phones work.

How Wireless Power Works

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Unless you are particularly organized and good with tie wrap, you probably have a few dusty power cord tangles around your home. Find out how methods of wireless power transmission could cut the clutter or lead to clean sources of electricity.

What Is a Brushless Motor?

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Discover the differences between the "normal" electric motor and a brushless electric motor that make brushless electric motors more efficient.

Is Wibree going to rival Bluetooth?

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Nokia announced a new short-range wireless technology, Wibree, in October 2006.

How Digital Cameras Work

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Digital cameras produce instant photos that you can print or share online. Learn how digital cameras work and read reviews of the best digital cameras.

How Xbox 360 Works

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Xbox 360 is a top-of-the-line, next generation game console. Learn about Xbox 360 specs and controllers, and read game reviews and find good prices.

Where can I recycle my old electronics?

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If you're lucky enough to unwrap a sweet new smartphone or PS3 this year, what are you going to do with that relic you've been using up to now? Learn about electronics recycling.