Answer:
NOR Gate
Explanation:
NOR gate is a two input gate.
It is defined as the complement of (X or Y), where X and Y are the inputs of the gate.
X Y X+Y Complement(X+Y) NOR
1 1 1 0 0
1 0 1 0 0
0 1 1 0 0
0 0 0 1 1
Ut is an operator which gives a value of 1 only when the bvoth the inputs are 0.