XNOR gate

XNOR gate truth table
Input Output
A B A XNOR B
0 0 1
0 1 0
1 0 0
1 1 1

The XNOR gate (sometimes ENOR, EXNOR, NXOR, XAND and pronounced as Exclusive NOR) is a digital logic gate whose function is the logical complement of the Exclusive OR (XOR) gate.[1] It is equivalent to the logical connective () from mathematical logic, also known as the material biconditional. The two-input version implements logical equality, behaving according to the truth table to the right, and hence the gate is sometimes called an "equivalence gate". A high output (1) results if both of the inputs to the gate are the same. If one but not both inputs are high (1), a low output (0) results.

The algebraic notation used to represent the XNOR operation is . The algebraic expressions and both represent the XNOR gate with inputs A and B.

  1. ^ "Exclusive-NOR Gate Tutorial". Retrieved 6 May 2018.