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What do the terms analog transmission, digital transmission, and high-definition mean?

April 26, 2017analog digital mean terms transmission

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What do the terms analog transmission, digital transmission, and high-definition mean?

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Analog transmits video signal as electronic waves. Digital transmission converts the signal into a series of 0s and 1s using less of the bandwidth spectrum than analog transmission. Some TV sets have a built-in digital tuner (DTV) which allows them to receive digitally transmitted signals. These sets may or may not be high-definition TVs. HDTV (high-definition) offers the highest quality picture available. Both a high-def TV set and high-def signal are needed to view in HD.