14. To implement AB using XOR with three inputs, the third input should be a) Ground b) To one of inputs (A,B) c) +5V d) Answers b or c 15. Which one of these called universal gate: a) NAND only b) NAND, NOR c) AND, OR, NOT d) OR, AND, NOT, NOR,X XNOR, NAND 16. What is the output of XOR with two inputs A,B, if A is connected to +5v : a) Always zero b) Always one c) B d) B