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TV Signals Roundup

How Remote Controls Work

A universal remote can control all of your electronics.
©iStockphoto.com/slobo

In WWII, remote controls detonated bombs for the first time. Now some of us spend an hour looking for the remote before we remember there are buttons on the TV. Find out the difference between a "universal" and a "learning" remote and check out some of the other high-tech features you can find on remotes today.

Learn How Remote Controls Work.

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