**10+ Half Adder Block Diagram**. Two input xor gate, two input and gate forms the half adder logic circuit. We can make this circuit using two basic.

We can make this circuit using two basic. Half adders perform a simple binary addition of 2 bits producing 2 outputs, the sum bit (y) and carry bit (c). Alternately 2 xor gates, 2 and gates and 1 or gate.

### Block diagram of half adder.

10+ Half Adder Block Diagram. 16b adder using 4b cla blocks. One is half adder and another one is known as full adder. 3.1 half adder a half adder is used to add two binary digits together, a and b. A half adder does not account for a number carried in.