Asked Jan 29, 2019

How can I use a logic gate to test if two numbers are equal?


Expert Answer

Step 1

The “Exclusive-NOR” gate is a combination of the Exclusive-OR gate and the NOT gate.

Step 2

An output “1” is only obtained if BOTH of its inputs are at the same, either binary “1” or “0”. For example, if the inputs are “00” or “11” then the output will be 1. Thus, XNOR gate can be used to check if two numbers are equal or not. If both the numbers ae equal then the output will be true.

Step 3

The logical expression for XNOR gate is

Q = (A ⊕ B) =...

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