Half adder

Table of contents

  1. Introduction
  2. Block diagram
  3. Truth table
  4. Circuit diagram
  5. Half adder from universal gates


Half adder is a combinational logic circuit with two inputs and two outputs. The half adder circuit is designed to add two single bit binary number A and B. It is the basic building block for the addition of two single-bit numbers. This circuit has two outputs carry and sum.

Block diagram

Truth table

Circuit diagram

Half adder from universal gates