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CBSE Class 11 Computer Science — Revision Notes

CBSE Class 11 Computer Science revision notes, chapter by chapter across 11 chapters. Follows the CBSE syllabus.

How to Revise Effectively

  • Active recall: cover the notes, try to recall the key points, then check.
  • Spaced repetition: revise each chapter again after a day, then after a few days, then after a week or two.
  • Write, don't just read: writing key points and formulas out by hand helps them stick.
  • Teach someone: explaining an idea to a friend is a good test of whether you understand it.

Chapter-Wise Revision Notes — 11 Chapters

1

Computer System

4 topics
  • 1. Computer System and CPU
  • 2. Evolution of Computer and Architecture
  • 3. Computer Memory and Units
  • 4. Data Transfer and Bus System
A computer system includes the computerThe CPU is the electronic circuitryThe ALU performs arithmetic and logicRegisters are small local memory unitsPrimary memory is directly accessed by
Read the Computer System notes
2

Encoding Schemes and Number System

4 topics
  • 1. Encoding Schemes
  • 2. ASCII, ISCII, and Unicode Examples
  • 3. Number Systems and Positional Value
  • 4. Binary, Octal, and Hexadecimal Number Systems
Encoding is the mechanism of convertingASCII stands for American Standard CodeISCII stands for Indian Script CodeUNICODE is a standard developedThe decimal number system is
Read the Encoding Schemes and Number System notes
3

Emerging Trends

4 topics
  • 1. Artificial Intelligence, Machine Learning, and Natural Language Processing
  • 2. Immersive Experiences: Virtual Reality and Augmented Reality
  • 3. Robotics, Sensors, Drones, and Humanoids
  • 4. Big Data and Data Analytics
Artificial Intelligence is the attemptMachine Learning is a subsystemNatural Language Processing deals with interactionVirtual Reality is a threeAugmented Reality adds computer
Read the Emerging Trends notes

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Revision notes with diagrams and examples for all 11 chapters in Super Tutor.

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Frequently Asked Questions

Where can I find CBSE Class 11 Computer Science Revision Notes?

This page has revision notes for 11 chapters of CBSE Class 11 Computer Science for the 2026-27 session. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Browse Revision Notes by Chapter

11 chapters

1

Computer System

2

Encoding Schemes and Number System

3

Emerging Trends

4

Introduction to Problem Solving

5

Getting Started with Python

6

Flow of Control

7

Functions

8

Strings

9

Lists

10

Tuples and Dictionaries

11

Societal Impact

More Computer Science Resources

CBSE Class 11

Practice Quiz

Test yourself with quick quizzes

Important Questions

Exam-style questions with answers

Formula Sheet

The formulas of each chapter in one place

Chapter Summary

Understand each chapter at a glance

Concept Maps

Diagrams showing how topics connect

Study Plan

Week-by-week preparation schedule

Flashcards

Quick-fire cards for active recall practice

Syllabus

Chapter list and the topics in each

NCERT Solutions

Every textbook exercise solved step by step

Other CBSE Class 11 Subjects

PhysicsChemistryMathematicsBiologyEnglishAccountancyBusiness StudiesEconomics