E7A07 (D)
What logical operation does a NAND gate perform?
A. It produces logic 0 at its output only when all inputs are logic 0
B. It produces logic 1 at its output only when all inputs are logic 1
C. It produces logic 0 at its output if some but not all inputs are logic 1
D. It produces logic 0 at its output only when all inputs are logic 1
