CBSE Class 11 Computer Science Syllabus 2025-26

Unit-Wise Details of CBSE Class 11 Computer Science Syllabus 2025-26

Here’s a clear explanation of each unit in the syllabus. These topics are carefully selected to build your interest and skills in computer science

Unit 1: Computer Systems and Organisation (10 Marks)

This unit introduces students to the basic parts of a computer, such as input and output devices, memory, CPU, and types of software (system and application). Students also learn about number systems like binary and decimal, logic gates (AND, OR, NOT, etc.), and encoding systems like ASCII and Unicode.

Unit 2: Computational Thinking and Programming – 1 (45 Marks)

This is the most important unit in the CBSE Class 11 Computer Science Syllabus 2025-26. It helps students learn how to solve problems using computers. Key topics include:

• Problem-solving steps (analysis, algorithm, flowchart)
• Introduction to Python programming
• Variables, data types (number, string, list, dictionary, tuple, boolean)
• Operators and expressions
• Conditional statements (if, if-else, if-elif)
• Loops (for, while, nested loops)
• String, List, Tuple, and Dictionary operations
• Importing modules (like math, random, statistics)

By the end of this unit, students will be able to write basic Python programs and understand how computer logic works.

Unit 3: Society, Law and Ethics (15 Marks)

This unit teaches how to be safe and responsible while using the internet. Topics include:

• Cyber safety and cybercrime
• Intellectual property rights (copyright, plagiarism
• Malware like viruses, trojans
• E-waste and how to dispose of gadgets safely
• Importance of gender and disability inclusion in tech

The CBSE Class 11 Computer Science Syllabus 2025-26 helps students become smart and responsible digital citizens.

CBSE Class 11 Computer Science Syllabus 2025-26 Practical (30 Marks)

Practical knowledge is as important as theory. The practical exam includes:

Suggested Python Programs:

• Welcome message display
• Find bigger number among two/three inputs
• Display number patterns using loops
• Sum of series like 1 + x + x^2 + ... + x^n
• Check for palindrome, Armstrong, or perfect number
• Fibonacci series
• Count vowels and consonants in a string
• Dictionary for storing student names and marks

These programs help students apply what they learn and get confident in using Python.

Tips to Prepare for CBSE Class 11 Computer Science Syllabus 2025-26

These tips will help you stay on track and score well in both theory and practicals.

Focus on Programming: Practice Python regularly. Start with basic programs and move to loops and functions.

Understand the Basics: Don’t just memorize—understand how the logic and code work.

Revise Theory: Read the NCERT textbook and make short notes for revision.

Do the Practicals: Perform all the practical programs given in the syllabus.

Stay Updated: Follow cyber laws and safety topics, as questions can be scenario-based.

The CBSE Class 11 Computer Science Syllabus 2025-26 is designed to be practical, relevant, and future-focused. It equips students with programming skills, logical thinking, and an ethical approach to using technology. 

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