EX-NOR gate-

EX-NOR gate is an electronic circuit having more than two inputs and only one output. This gate is called by giving output of EX-OR gate to the NOT gate so that output of EX-NOR gate is nothing but compliment of EX-OR gate. The output of these gate is 1 when both the inputs are same. Otherwise output is 0. so these gate is also called as equality detector.