The XOR gate is very useful circuit in many type of combinational circuit. In this tutorial we will discuss about XOR gate. The XOR gate are also known as EX-OR gate or Exclusive-OR gate. It is not frequently use as OR gate, it has own significance. In previous tutorial we all ready discuss the AND […] Learn about the XOR gate, a digital logic gate that gives a true output when the number of true inputs is odd. See the truth table, the symbols, and the different ways to implement the XOR gate using MOSFETs, transmission gates, and other gates. The EX-OR gate also known as the Exclusive-OR gate is widely used in digital circuits. The XOR gate outputs high when its inputs are at different logic levels with respect to each other. For the two input XOR gates, the gate output is high if the input is either 01 or 10, and the gate output is low if the input is either 11 or 00. The two-input “Exclusive-OR” gate is basically a modulo two adder, since it gives the sum of two binary numbers and as a result are more complex in design than other basic types of logic gate. The truth table, logic symbol and implementation of a 2-input Exclusive-OR gate is shown below. The Digital Logic “Exclusive-OR” Gate 2-input Ex-OR Gate