Contents

Preface

Acknowledgement

Chapter 1 Digital Systems

Digital transmission

Multiple Choice Questions

Descriptive Questions

Chapter 2 Numbering Systems

Introduction

Decimal number system

Binary numbering system

Octal numbering system

Hexadecimal numbering system

Conversion of numbers from one base into another

Arithmetic in number system

Binary subtraction

Negative binary numbers

Binary multiplication

Binary division

Number codes

Gray code

Alphanumeric codes

Parity method for error detection

Multiple Choice Questions

Descriptive Questions

Chapter 3 Logic Gates

Introduction

Positive and negative logic

AND gate

OR gate

NOT gate

Universal gates

NAND as a universal gate

Operation of a NAND gate

NOR gate

Operation of NOR gate

The EXCLUSIVE-OR ...

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