CBSE Class 11 Computer Science

Class 11 CS Chapter Modules

Select any chapter module below to read complete study guides, diagrams, solved examples, and revision questions.

All Chapters

Computer System and Organisation

Unit I: Computer Systems and Organisation

Basic computer organisation, CPU architecture, ALU, control unit, registers, memory hierarchy, I/O devices, system bus.

Number System and Conversion

Unit I: Computer Systems and Organisation

Binary, octal, decimal, hexadecimal number systems and conversion techniques, binary arithmetic.

Encoding Schemes

Unit I: Computer Systems and Organisation

ASCII, ISCII, Unicode, UTF-8, UTF-16, UTF-32 encoding standards.

Types of Software

Unit I: Computer Systems and Organisation

System software, application software, utility software, programming tools, open source vs proprietary.

Operating System Basics

Unit I: Computer Systems and Organisation

Functions of OS, types of OS, process management, memory management, file management.

Basic Computer Organisation

Unit I: Computer Systems and Organisation

Von Neumann architecture, CPU components, registers, instruction cycle, memory hierarchy, I/O organisation.

Boolean Logic

Unit I: Computer Systems and Organisation

Logic gates, truth tables, Boolean algebra laws, De Morgan's laws, expression simplification.

Introduction to Python

Unit II: Computational Thinking and Programming

Python features, installation, tokens, variables, data types, input/output, comments.

Python Fundamentals

Unit II: Computational Thinking and Programming

Keywords, identifiers, variables, data types, type conversion, operators, expressions, input/output functions.

Operators and Expressions

Unit II: Computational Thinking and Programming

Arithmetic, relational, logical, assignment, bitwise, identity, membership operators; operator precedence and associativity.

Flow of Control

Unit II: Computational Thinking and Programming

Sequential, selection (if, if-else, elif, nested if), iteration (for, while, nested loops), break, continue, pass.

Strings in Python

Unit II: Computational Thinking and Programming

String creation, indexing, slicing, immutability, operators, methods, formatting, Unicode, escape sequences.

Lists in Python

Unit II: Computational Thinking and Programming

List creation, indexing, slicing, mutability, methods, nested lists, list comprehension, copying.

Tuples in Python

Unit II: Computational Thinking and Programming

Tuple creation, indexing, slicing, immutability, methods, packing/unpacking, nested tuples, list vs tuple.

Dictionary in Python

Unit II: Computational Thinking and Programming

Dictionary creation, accessing/modifying values, methods, traversal, keys, nested dictionaries, comprehension.

Sorting Algorithms

Unit II: Computational Thinking and Programming

Bubble sort, selection sort, insertion sort with Python implementations, complexity analysis, comparison.