Class 11 Computer Science (CBSE 083)
“Don't just memorise it — see it, build it, master it”
A complete, exam-ready Class 11 Computer Science course built as a learning experience, not a notes dump. Every concept pairs CBSE theory with interactive simulators — convert number systems live, flip logic gates, run real Python — plus bilingual explanations, projects and chapter tests. Free forever, aligned to CBSE Subject Code 083 (70 theory + 30 practical).
🧪 Simulators
Convert number systems and flip logic gates live — don't just read the truth table, build it.
🐍 Real Python
Run Python in the browser, no install — see variables and loops execute step by step.
🇮🇳 Bilingual
Explanations in English and Hindi, tuned to the CBSE 083 syllabus.
📝 Exam-ready
CBSE theory, chapter tests and projects mapped to the 70+30 marks pattern.
Module 1 · Computer Systems & Organisation
How a computer is built, how it stores data, and the logic underneath it all.
Hardware & Software
Inside the CPU — ALU, Control Unit, registers and the instruction cycle, with an animated data-flow.
Cache, RAM (SRAM/DRAM), ROM, SSD/HDD, and the bit→YB units — drag the memory hierarchy into order.
System vs application software, assemblers/compilers/interpreters, and what an OS actually does.
Data & Logic
Binary, octal, decimal & hex — convert any number live and watch every step, with a built-in simulator.
How text becomes numbers — ASCII, ISCII and the Unicode (UTF-8/16/32) schemes.
Every logic gate, truth tables and De Morgan's laws — flip the inputs and watch the output live.
Module 2 · Computational Thinking & Python
The core: think like a programmer and master Python from first print() to data structures.
Problem Solving
Python Basics
Interactive vs script mode, keywords, identifiers, literals — and your first live Python run.
Arithmetic, relational, logical, assignment, identity and membership operators.
if / elif / else, for & while loops, break/continue — with a step-by-step loop visualizer.
Data Structures
Immutability, indexing, slicing and every string method — build a Password Strength Checker.
Mutable sequences, every list method, and nested lists / matrices.
Immutable sequences, packing/unpacking, and when to choose a tuple over a list.
Key-value mapping and every dict method — build a Student Result Manager.
Module 3 · Society, Law & Ethics
Be a safe, ethical, responsible digital citizen.
Digital Citizenship
Active vs passive footprints and the etiquette of being online.
Copyright, patents, trademarks, plagiarism, piracy and open-source licences (GPL, CC, Apache).
Phishing, malware, identity theft, cyberbullying — and the IT Act that protects you.
E-waste hazards and responsible disposal & recycling.