What Is Encoder, How It Function?

What Is Encoder, How It Function?
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Answer :

An encoder is a device used to change a signal (such as a bitstream) or data into a code. The code may serve any of a number of purposes such as compressing information for trmission or storage, encrypting or adding redundancies to the input code, or trlating from one code to another.

This is usually done by me of a programmed algorithm, especially if any part is digital, while most analog encoding is done with analog circuitry.
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