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"
