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In 1-to-4 multiplexer, if C1 = 1 & C2 = 1, then the output will be ____________

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In 1-to-4 multiplexer, if C1 = 1 & C2 = 1, then the output will be ____________

(a) Y0

(b) Y1

(c) Y2

(d) Y3

This question was posed to me in a job interview.

The doubt is from Demultiplexers (Data Distributors) topic in division Combinational Circuits of Digital Circuits

1 Answer

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Best answer
Right choice is (d) Y3

Easiest explanation: It can be calculated from the figure shown below:

For C0 =1 and C1 =1, Y3 will be the output as 0 and 1 are the bit combinations of 1.

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