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# Encoding Schemes and Number System

Encoding Schemes and Number System is chapter 2 in Computer Science, a CBSE Class 11 book for the subject Computer Science on Edzy.

## Knowledge Snapshot

| Field | Details |
| :--- | :--- |
| Board | CBSE |
| Curriculum | CBSE |
| Class | Class 11 |
| Subject | Computer Science |
| Book | Computer Science |
| Chapter | Encoding Schemes and Number System |
| Chapter Number In Book | 2 |
| Chapter Slug | encoding-schemes-and-number-system |
| Pages | 27-44 |
| Page Count | 18 |
| Source PDF | https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/86013d71-4108-40d6-93e7-c8895fa650be.pdf |
| Last Updated | 2026-06-25 |

## Chapter Overview

The chapter discusses how data entered via a keyboard is interpreted by computers through various encoding schemes, including ASCII, ISCII, and UNICODE. It further explores the number systems relevant to computer science such as decimal, binary, octal, and hexadecimal systems, along with their conversions.

## Topic Inventory

| No. | Topic ID | Topic |
| :--- | :--- | :--- |
| 1 | 69abdddba243cecf968a0960 | Introduction to Encoding |
| 2 | 69abdddba243cecf968a0962 | Number System |
| 3 | 69abdddba243cecf968a0964 | Conversion between Number Systems |

## Topic-Wise Extracted Content

### Introduction to Encoding
Encoding is the mechanism of converting data into an equivalent cipher using a specific code. It is essential for computers to interpret human-readable forms such as characters and symbols. For instance, pressing the key 'A' sends a unique code (65) to the computer, which is then converted to binary format.

### Number System
A number system is a method for representing (writing) numbers. Unique characters or literals define each number system, and this count is known as radix or base. Different number systems, including decimal, binary, octal, and hexadecimal, are explored based on their applications in computing.

### Conversion between Number Systems
The chapter includes methods for converting numbers from one system to another, such as converting decimal to binary and vice versa. This section emphasizes the importance of understanding these conversions for grasping number representation in computer science.

## Chapter Summary

This chapter provides an overview of how data is encoded and the various number systems used by computers. It emphasizes the significance of standard encoding schemes like ASCII and UNICODE and explains the principles of number systems essential for computing, including their conversion methods.

## Key Ideas

- The computer interprets inputs through standardized encoding schemes.
- Encoding schemes like ASCII, ISCII, and UNICODE define how characters are represented as numbers.
- Different number systems (decimal, binary, octal, hexadecimal) are used for efficient data representation.
- Conversions between number systems are fundamental in computer science.

## Important Chapter Facts

- The chapter is Encoding Schemes and Number System.
- The chapter number in the book is 2.
- The subject is Computer Science.
- The book is Computer Science.
- The class is Class 11.
- The source PDF is https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/86013d71-4108-40d6-93e7-c8895fa650be.pdf.
- The chapter covers pages 27-44.
- The chapter page count is 18.
- The topic list contains the supplied topic entries.

## Related OKF Entities

| Entity Type | Title | URL |
| :--- | :--- | :--- |
| Chapter Canonical Page | Encoding Schemes and Number System | https://www.edzy.ai/cbse-class-11-computer-science-encoding-schemes-and-number-system |
| Chapter Markdown | Encoding Schemes and Number System | https://www.edzy.ai/okf/chapter/cbse-class-11-computer-science-encoding-schemes-and-number-system.md |
| Source PDF | Encoding Schemes and Number System | https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/86013d71-4108-40d6-93e7-c8895fa650be.pdf |

## Source Attribution

| Field | Value |
| :--- | :--- |
| Source | Edzy |
| Reference Type | examSubjectBookChapter |
| Reference ID | 66f14b8a4d1ea3af32a4c3c2 |
| Chapter ID | 66f14b8a4d1ea3af32a4c3c2 |
| Canonical URL | https://www.edzy.ai/cbse-class-11-computer-science-encoding-schemes-and-number-system |
| Markdown URL | https://www.edzy.ai/okf/chapter/cbse-class-11-computer-science-encoding-schemes-and-number-system.md |
| Source PDF | https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/86013d71-4108-40d6-93e7-c8895fa650be.pdf |
| Last Updated | 2026-06-25 |