Class 11 Computer Science

Hardware and software, the CPU, primary/cache/secondary memory and its units, and what an operating system actually does for you.

Binary, octal and hexadecimal, converting between them, and how ASCII, ISCII and Unicode turn characters into numbers.

NOT, AND, OR, NAND, NOR and XOR, truth tables, De Morgan's laws and reading a logic circuit. A syllabus topic with no NCERT chapter of its own.

Analysing a problem, writing the algorithm before the code, flowcharts and pseudocode, decomposition, then testing and debugging.

Your first program, interactive vs script mode, tokens and variables, every data type, all six operator families, and the three kinds of error.

Indentation as syntax, if/elif/else, for with range() and while, break and continue, and nested loops that draw patterns.

Slicing, traversal and every built-in method the syllabus names — from capitalize() and find() through strip(), join(), partition() and split().

Indexing, slicing and nested lists, append vs extend vs insert, sort vs sorted, and linear search and frequency counts written out.

Why a tuple is immutable and a dictionary is not, tuple assignment and nesting, and looking data up by key instead of by position.

import and from, and the three modules the syllabus examines: math, random and statistics. NCERT prints this inside its Functions chapter.

Digital footprints, net etiquette, IPR and plagiarism, cyber crime and safety, malware, e-waste and the IT Act.

Artificial intelligence, big data, IoT, cloud and grid computing, and blockchain. Worth reading; not worth revising for the exam.

In your NCERT textbook, but in no unit of the CBSE 2025-26 syllabus.

Writing your own functions, parameters and arguments, return values and scope. Class 11 keeps only the modules half of this chapter.

Moved to Class 12 — the CBSE 2025-26 Class 11 syllabus examines only built-in methods and modules.