E7A10 (C) 
What logical operation does a NOR gate perform?
A. It produces a logic "0" at its output only if all inputs are logic "0"
B. It produces a logic "1" at its output only if all inputs are logic "1"
C. It produces a logic "0" at its output if any or all inputs are logic "1"
D. It produces a logic "1" at its output only when none of its inputs are logic "0"
