GMDSS: Element 3

1. A Produces a logic 1" at its output if any input is logic "1"."
2. B Produces a logic 0" at its output if any input is logic "1"."
3. C Produces a logic 0" at its output if all inputs are logic "1"."
4. D Produces a logic 1" at its output if all inputs are logic "0"."

Tip: press A-D to answer