Q.

How is an encoder different from a decoder?

A. the output of an encoder is a binary code for 1-of-n input
B. the output of a decoder is a binary code for 1-of-n input
C. the output of an encoder is a binary code for n-of-1 output
D. the output of a decoder is a binary code for n-of-1 output
Answer» A. the output of an encoder is a binary code for 1-of-n input
Explanation: an encoder is a combinational circuit encoding the information of 2n input lines to n output lines, thus producing the binary equivalent of the input. it performs the opposite operation of a decoder which results in 2n outputs from n inputs. thus, an encoder different from a decoder because of the output of an encoder is a binary code for 1-of-n input.
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