CBSE Class 11 Computer Science Syllabus 2026-27 - Updated Curriculum

Distribution of Marks

Unit-wise Syllabus

Unit 1: Computer Systems and Organisation

• Basic Computer Organisation: Introduction to computer system, hardware, software, input/output devices, CPU, memory (primary, cache, and secondary), units of memory (bit, byte, KB, MB, GB, TB, PB)

• Types of Software: System software (Operating systems, utilities, device drivers), programming tools, language translators (assembler, compiler, interpreter), application software

• Operating System (OS): Functions, user interface

• Boolean Logic: NOT, AND, OR, NAND, NOR, XOR, truth tables, De Morgan’s laws, logic circuits

• Number System: Binary, Octal, Decimal, Hexadecimal

• Encoding Schemes: ASCII, ISCI, Unicode (UTF8, UTF32)

Unit 2: Computational Thinking and Programming - I

• Problem-Solving Basics: Analyzing the problem, algorithm design, coding, testing, debugging, using flowcharts and pseudocode

• Python Programming: Introduction, features, writing a simple "hello world" program, interactive/script mode, Python tokens, identifiers, literals, operators, variables, I-value and r-value, comments

• Data Types: Integer, floating point, complex, boolean, string, list, tuple, None, dictionary; mutable and immutable types

• Operators: Arithmetic, relational, logical, assignment, augmented assignment, identity, membership

• Expressions & Conversions: Precedence, type conversions, explicit/implicit conversions, console input/output

• Errors & Flow Control: Syntax/logical errors, run-time errors, indentation, sequential/conditional/iterative flow

• Conditional Statements: if, if-else, if-elif-else, flowcharts, simple programs (e.g., absolute value, sorting 3 numbers)

• Iterative Statements: for loop, while loop, nested loops, generating patterns, sum of series, factorial

• Strings, Lists, Tuples, Dictionary: Introduction, indexing, concatenation, slicing, built-in methods, traversing, linear search, counting frequency of elements

• Python Modules: Importing modules (import module), math, random, statistics modules

Unit 3: Society, Law and Ethics

• Digital Footprints

• Digital Society and Netizen: Net etiquette, communication etiquettes, social media etiquettes

• Data Protection: Intellectual property rights (copyright, patent, trademark), plagiarism, open-source software licensing (Creative Commons, GPL, Apache)

• Cyber Crime & Safety: Hacking, phishing, ransomware, cyber trolling, safe browsing, identity protection, confidentiality

• Malware: Viruses, Trojans, adware

• E-waste Management: Proper disposal of electronic gadgets

• Information Technology Act (IT Act)

• Technology & Society: Gender and disability issues while using computers

CBSE Class 9 Artificial Intelligence Practical Syllabus 2026-27

The practical component of the Class 9 Artificial Intelligence CBSE syllabus carries a total of 30 marks, designed to develop hands-on programming skills, problem-solving ability, and project-based learning. The evaluation is divided into three parts:

Suggested Reading Material

• NCERT Textbook for Computer Science (Class IX)

• Support material available on the CBSE website

Skills Developed Through Computer Science Class 11 Syllabus

By following the CBSE computer science syllabus for class 11, students will:

• Develop logical reasoning and problem-solving skills using computational thinking.

• Learn and implement different data types and algorithms for real-life problem-solving.

• Gain an understanding of computer systems, architecture, and operating systems.

• Become aware of cyber ethics, digital safety, and online privacy.

• Explore the societal impact of technology, including accessibility and inclusivity.

This computer science class 11 CBSE syllabus balances theoretical knowledge with practical skills, preparing students to become proficient programmers and responsible digital citizens.