Question

Differentiate between Half Adder and Full Adder. Draw the logic circuit diagram for a Full Adder.

Answer 1

S.No	Half Adder	Full Adder
1.	A combinational circuits that performs the addition of two bits is called a half adder	A combinational circuit that performs the addition of three bits (two bits are significant and one is a previous carry) is called a full adder
2.	The half adder circuits needs two binary inputs and two binary outputs.	It consists of three binary inputs and two binary outputs.
3.	Half adder does not have carry in input.	Full adder has carry in input.

Full adder circuit diagrams :