Operating System Handwritten Notes PDF Download | Complete OS Notes for Students

What is an Operating System?

An Operating System is a software that acts as an interface between the user and the computer hardware. It controls and coordinates the use of hardware among various application programs. Examples include Windows, Linux, macOS, and Android.

Functions of Operating System

• Process Management: Manages running processes and CPU scheduling.
• Memory Management: Allocates and deallocates memory spaces.
• File Management: Handles data storage, retrieval, and organization.
• Device Management: Manages I/O devices and drivers.
• Security: Protects system resources and user data.

Types of Operating Systems

• Batch Operating System
• Time-Sharing Operating System
• Distributed Operating System
• Real-Time Operating System
• Network Operating System
• Mobile Operating System

CPU Scheduling Algorithms

• First Come First Serve (FCFS)
• Shortest Job Next (SJN)
• Round Robin (RR)
• Priority Scheduling
• Multilevel Queue Scheduling

Memory Management Techniques

• Paging and Segmentation
• Swapping
• Virtual Memory
• Demand Paging
• Page Replacement Algorithms

File System Concepts

The file system organizes and stores data on storage devices. It provides the structure and naming conventions for managing files and directories efficiently.

Why Download Operating System Handwritten Notes?

• Easy to understand handwritten format
• Covers all important OS concepts
• Useful for BCA, B.Tech, and IT students
• Perfect for quick revision and exam preparation

Tips to Study Operating System Effectively

• Understand the architecture and components clearly.
• Draw process and memory management diagrams.
• Practice scheduling and memory allocation problems.
• Revise algorithms and system calls regularly.

These Operating System handwritten notes provide a complete understanding of OS concepts in a simplified way. Download now to strengthen your computer science fundamentals.