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How many outputs will a decimal-to-BCD encoder have?(a) 4(b) 8(c) 12(d) 16This question was posed to me in an online quiz.Origin of the question is Encoders in section Combinational Circuits of Digital Circuits

Answer»

Right answer is (a) 4

Explanation: An encoder is a combinational circuit ENCODING the information of 2^n input LINES to n output lines, thus PRODUCING the binary equivalent of the input. Thus, a decimal to BCD encoder has 4 outputs.



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