Half adder

Table of contents

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

Introduction

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