Set-top boxes

A set-top box (STB) or set-top unit (STU), or nowadays known as a cable box is an information appliance device that generally contains a TV-tuner input and displays output to a television set and an external source of signal, turning the source signal into content in a form that can then be displayed on the television screen or other display device. They are used in cable television, satellite television, and over-the-air televisionsystems, as well as other uses.

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