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ISC Class 11 Computer Science: Chapter-wise Notes and PYQs

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ISC · Class 11 · 2026-27

ISC Class 11 Computer Science: chapter-wise study guide

All 13 chapters of ISC Class 11 Computer Science for the 2026-27 session. Each chapter page explains the ideas, gives tricks to remember them, shows where students lose marks, and links to practice.

  • 13 chapters
  • 26 topic pages
Start with the first chapter

Exam note: Class XI is a school examination: CISCE says the Class XI final examination is conducted internally by schools. The ISC 2028 syllabus sets Paper I (Theory) at 70 marks and 3 hours, with Section A (Hardware) 25, Section B (Java) 30 and Section C (Python and conceptual aspects) 15, and Paper II (Practical, 3 hours) at 30 marks. From 2028 Class XI adds Python and text-file handling. CISCE publishes no Class XI question-paper layout.

Section A: Hardware

  1. System of Numeration

  2. Encodings

  3. Propositional Logic and Logic Gates

Section B: Java

  1. Introduction to Object Oriented Programming using Java

  2. Objects

  3. Primitive Values, Wrapper Classes, Types and Casting

  4. Variables and Expressions

  5. Statements and Scope

  6. Methods and Constructors

  7. Arrays and Strings

  8. Basic Input/Output and Text File Handling

Section C: Python and Conceptual Aspects

  1. Introduction to Python

  2. Trends in Computing and Ethical Issues

Syllabus source: CISCE ISC 2028 Computer Science (868) syllabus (Classes XI and XII), CISCE Regulations for ISC Examination Year 2028