Topic: Digital Logic
A full adder circuit requires
- A. two inputs and two outputs
- B. two inputs and three outputs
- C. three inputs and two outputs
- D. three inputs and one output
Answer: C. three inputs and two outputs
Explanation: A full adder adds two significant bits and an incoming carry bit, hence it has 3 inputs (A, B, Carry-In). It produces a sum and an outgoing carry, hence it has 2 outputs (Sum, Carry-Out).