What is Encoder ? ( 4:2 Encoder )

What is  Encoder ? 

Ans-   It is a combination logic circuit which convert decoded information to binary signal.
                      OR
An encoder is a digital circuit that performs the inverse operation of a decoder.
                   



Note- A encoder has
input lines and "n" output lines.

        4:2 Encoder
      Truth table of 4:2 Encoder:-




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