CA1102

**Class XI Computer Applications – Chapter 2: Data Representation**

Learn the fundamentals of Data Representation through this educational Android application designed for Class XI Computer Applications students.

**Topics covered**

• **2.1 Introduction** – Understand data representation and how computers store and process information.

• **2.2 Number System** – Learn decimal, binary, octal, and hexadecimal number systems.

• **2.3 Number System Conversions** – Practise converting numbers between different number systems.

• **2.4 Binary Addition** – Understand binary addition rules, sums, and carry operations.

• **2.5 Numeric Representation** – Study sign and magnitude, 1's complement, 2's complement, and floating-point representation.

• **2.6 Character Representation** – Learn ASCII, Extended ASCII, and Unicode.

• **2.7 Multimedia File Formats** – Explore image, audio, and video file formats and their characteristics.

**Learning features**

• Chapter-wise learning resources
• Multiple-choice questions and exam practice
• Interactive questions with answer feedback
• Randomly selected questions for exam practice
• Progress through the topics at your own pace

This application is intended to support classroom learning, self-study, and revision for Class XI Computer Applications.

**Note:** This is an educational learning resource. Students should also follow their prescribed syllabus and classroom instructions.