8421 BCD, Excess-3 Code Conversion || Bcd to excess 3 code converter || Digital logic Design

Introduction

Introduction

In today's class, we are going to learn the concept of how to represent 8421 numbers and how to represent Excess-3 (XS-3) code using the 8421 Binary Coded Decimal (BCD) code.

8421 BCD Code

The 8421 BCD code is widely used and can be simply called a BCD code. Each decimal digit (0-9) is coded with 4-bit binary data. The weights 8, 4, 2, and 1 are attached to it, which is why it is also called the natural binary code.

Representation of Numbers using 8421 BCD

Let’s see how to represent the numbers 0 to 9 using the weights of 8, 4, 2, and 1.