Learn Operating System

Learn Operating System terms, definitions and etc.Anytime Anywhere Free!

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. All computer programs, excluding firmware, require an operating system to function.

Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.

For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware,[1][2] although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computer – from cellular phones and video game consoles to web servers and supercomputers.

Learn Operating System covers following content

OS - Getting Started

Process

OS - Process

OS - Process State Transitions

Exercise on Process

Exercise on Process Schedule

OS - Concurrent Process

Exercise on Concurrent Process

Threads

OS - Threads

CPU Scheduling

OS - CPU Scheduling

OS - FCFS CPU Scheduling Algorithm

OS - SJF CPU Scheduling Algorithm

OS - Priority CPU Scheduling Algorithm

OS - Round Robin CPU Scheduling Algorithm

Multilevel Queue & Multilevel Feedback Queue Scheduling

Process Synchronization

OS - Introduction to Process Synchronization

OS - Critical Section Problem

OS - Mutual Exclusion Using Critical Region

OS - Introduction to Semaphore

OS - Record Based Semaphore & Binary Semaphore

OS - Deadlock & Starvation in Semaphore

OS - Bounded Buffer Problem

OS - Dining Philosopher Problem

OS - Readers & Writers Problem

OS - Readers & Writers Problem Algorithm

Deadlocks

OS - Deadlocks Introduction

OS - Resource Allocation Graph

OS - Necessary Conditions & Deadlock Prevention

Deadlock Avoidance, Banker's Algorithm with Example

OS - Resource Request Algorithm

OS - Deadlocks Detection

OS - Deadlocks Recovery

Memory Management

OS - Memory Management

OS - Dynamic Loading, Linking & Overlay

OS - Logical Vs Physical Address Space

OS - Single & Multiple Partition Allocation Schemes

OS - Memory Management Using Paging

Exercise on Paging

OS - Multilevel Paging and Inverted Page Table

OS - Memory Management Using Segmentation

Exercise on Segmentation

Virtual Memory

OS - Virtual Memory

OS - Page Fault in Virtual Memory

OS - Thrashing

OS - Allocation Algorithm

File System

OS - File System I-Node

Exercise 1 on I-Node

Exercise 2 on I-Node

Exercise on File System

Input Output System

OS - Input Output Management

OS - I/O Kernel Subsystem

OS - Direct Memory Access (DMA)

Exercise 1 on DMA

Exercise 2 on DMA

OS - Interrupts

Exercise 1 on Interrupt

Exercise 2 on Interrupt

Exercise I/O Handling

Disk Management

OS - Disk Management

Protection

OS - Protection

Security

OS - System Security

OS - Security Problems and Security Threads

OS - Encryption & Possible Program Threads

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