Exclusive OR (XOR)¶
This logic element performs the Boolean operation:
Y=I1⊕I2 resp. Y = I1 ≠ I2 resp. 
The number of inputs is two and is unchangeable.
The output can be delayed by one integration step by setting propagation delay.
The EXNOR function Y =I1 = I2 (equivalence) is achieved by a subsequent NOT gate.