CBSE Class 11 Computer Science (083) Syllabus 2026-27

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Download the official CBSE syllabus

This is CBSE's own Senior Secondary Curriculum 2026-27 (see the Class 11 Computer Science section), straight from cbseacademic.nic.in:

Official CBSE Curriculum 2026-27 (PDF)

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Marks at a glance

100 marks total = 70 theory (3-hour written exam) + 30 practical (lab test, practical file, project and viva).

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Unit-wise syllabus & marks

Unit & topics	Marks
Unit 1: Computer Systems and Organisation Basic computer organisation: Introduction to Computer System, hardware, software, input/output devices, CPU, memory (primary, cache, secondary), units of memory (bit, byte, KB, MB, GB, TB, PB); Types of software: system software (operating systems, system utilities, device drivers), programming tools and language translators (assembler, compiler, interpreter), application software; Operating Syste	10
Unit 2: Computational Thinking and Programming - I Introduction to Problem-solving: steps (analyzing, algorithm, coding, testing, debugging), flowchart, pseudocode, decomposition; Basics of Python: features, hello world, interactive vs script mode, character set, tokens (keyword, identifier, literal, operator, punctuator), variables, l-value/r-value, comments; Data types: Number (integer, float, complex), boolean, sequence (string, list, tuple), N	45
Unit 3: Society, Law and Ethics Digital Footprints; Digital Society and Netizen: net/communication/social media etiquettes; Data Protection: intellectual property rights (copyright, patent, trademark), violation of IPR (plagiarism, copyright/trademark infringement), open source software and licensing (Creative Commons, GPL, Apache); Cyber Crime: hacking, eavesdropping, phishing, fraud emails, ransomware, cyber trolls, cyber bull	15
Theory total	70

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Practical (30 marks)

Component	Marks
Lab Test - Python program (60% logic + 20% documentation + 20% code quality)	12
Report File (minimum 20 Python programs)	7
Viva voce	3
Project (using most of the concepts learnt)	8

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Related free resources

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Common questions

What is the CBSE Class 11 Computer Science (083) syllabus for 2026-27?+

The 2026-27 syllabus has Unit 1: Computer Systems and Organisation (10 marks), Unit 2: Computational Thinking and Programming - I (45 marks), Unit 3: Society, Law and Ethics (15 marks), totalling 70 theory marks, plus a 30-mark practical.

How many marks are theory and practical in Class 11 Computer Science?+

Class 11 Computer Science (083) is 100 marks: 70 marks theory (3-hour written exam) and 30 marks practical (lab test, practical file, project and viva).

Which unit carries the most marks in Class 11 Computer Science?+

Unit 2: Computational Thinking and Programming - I carries the most, 45 of 70 theory marks.

Where can I download the official CBSE Class 11 Computer Science syllabus 2026-27?+

CBSE publishes it in the Senior Secondary Curriculum 2026-27 on cbseacademic.nic.in; the official PDF is linked at the top of this page.

CBSE Class 11 Computer Science Syllabus 2026-27