Chapter-wise notes for basic Computer Science

 Notes for basic Computer Science 

🖥️ Unit I: Computer Systems and Organisation

📘 Chapter 1: Basics of Computer Organisation

• Input Devices: Keyboard, Mouse, Scanner

• Output Devices: Monitor, Printer, Speakers

• Memory Units: Bit, Byte, KB, MB, GB, TB

• Primary Memory: RAM, ROM

• Secondary Storage: HDD, SSD, USB

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📘 Chapter 2: Software Concepts

• System Software: Operating System, Compilers, Device Drivers

• Application Software: MS Word, Excel, Browsers

• Open Source vs Proprietary Software

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📘 Chapter 3: Boolean Logic and Number Systems

• Boolean Operators: AND, OR, NOT

• Truth Tables

• Number Systems:

  • Binary to Decimal

  • Decimal to Binary

  • ASCII and Unicode characters

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💻 Unit II: Computational Thinking and Programming – I

📘 Chapter 4: Introduction to Python

• Python Features: Simple, interpreted, free, versatile

• Variables and Data Types: int, float, str, bool

• Comments: # for single-line, ''' for multi-line'''

• Input/Output: input(), print()

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📘 Chapter 5: Operators and Expressions

• Arithmetic Operators: +, -, *, /, //, %, **

• Relational Operators: <, >, <=, >=, ==, !=

• Logical Operators: and, or, not

• Assignment Operators: =, +=, -=

• Operator Precedence

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📘 Chapter 6: Control Flow

• Conditional Statements: if, if-else, if-elif-else

• Loops: for, while

• Loop Control: break, continue, pass

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📘 Chapter 7: Strings

• String Creation: 'Hello', "World"

• String Operations: Concatenation (+), Repetition (*)

• Slicing: s[1:4]

• Built-in Functions: len(), lower(), upper(), find()

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📘 Chapter 8: Lists and Tuples

• List: Mutable collection a = [1, 2, 3]

• List Methods: append(), insert(), remove(), pop()

• Tuple: Immutable t = (1, 2, 3)

• Accessing Elements: Indexing, slicing

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📘 Chapter 9: Dictionaries

• Dictionary Creation: d = {'name': 'John', 'age': 17}

• Access Elements: d['name']

• Methods: keys(), values(), get(), update()

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🌐 Unit III: Society, Law and Ethics – I

📘 Chapter 10: Cyber Safety

• Digital Footprint

• Cyberbullying, Phishing, Identity Theft

• Password Security, Privacy Protection

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📘 Chapter 11: Ethics & Legal Issues

• Intellectual Property Rights (IPR)

• Open Source vs Proprietary Software

• Digital Rights & Responsibilities

• Plagiarism and Fair Use