Q.

If two numbers are not equal then binary variable will be                          

A. 0
B. 1
C. a
D. b
Answer» A. 0
Explanation: a comparator is a combinational circuit that takes two numbers as input in binary form and results whether one input is greater, lesser or equal to the other input. in a digital comparator, only 3 outputs are possible (i.e. a = b, a >b, a < b). other than this, the output will be 0.
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