Notes for every year of Computer Science
Chapter-wise notes for Class 9, Class 10 and NEB Class 11, written to match the government syllabus. Pick your class below and jump straight to the chapter you need.
Class 9 Computer Science Notes
Covers the foundational units students meet first: how a computer works, how it stores numbers, and the basics of software and networks.
Number System
Decimal, binary, octal and hexadecimal, with conversions between them.
Read notes → UNIT 02Introduction to Computers
What a computer is, its parts, and how data moves through it.
Read notes → UNIT 03Computer Software
System software versus application software, and what each one does.
Read notes → UNIT 04Internet and Networking
Basic networking terms and how the internet connects computers.
Read notes →Class 10 Computer Science Notes
Built for SEE preparation, with a stronger focus on networking, programming, and the web.
Communication and Computer Network
Data communication, network types, and how the internet applies them.
Read notes → UNIT 02Programming in QBASIC / C
Variables, conditions, and loops, with worked examples for exams.
Read notes → UNIT 03Database Concepts
Tables, records, and the reasons a database beats a plain file.
Read notes → UNIT 04Computer Security and Ethics
Digital literacy, cyber law, and the risks students should know about.
Read notes →NEB Class 11 Computer Science Notes
Deeper units for NEB Grade 11, covering systems, logic, and databases at exam depth.
Introduction to Computer Systems
Hardware, software layers, and how a system fits together.
Read notes → UNIT 02Boolean Logic and Number Systems
Logic gates, truth tables, and number system conversions.
Read notes → UNIT 03Database Management System
DBMS concepts, keys, and basic query ideas.
Read notes → UNIT 04Web Technology
How the web works, from HTML basics to how pages get served.
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