Computer Science for IGCSE & O level - Boolean Logic (Section 5 - No. 23)
What are the main components of a Full-adder?
Two half-adders and an OR gate.
Two AND gates, one OR gate.
Two NOT gates and an AND gate.
Two XOR gates and an AND gate
Explication
A Full adder needs a carry and sums hence needs 2 half adders and an OR gate.