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  • What is an Operating System?

Operating System

What is an Operating System?

An Operating System (OS) is a crucial piece of software that acts as an intermediary between the user and the computer hardware. It manages computer hardware resources and provides services to application software, allowing users to interact with the machine seamlessly. Without an OS, users would need to write programs directly to control hardware, which is highly complex. The OS simplifies this interaction by providing a user-friendly interface and managing system resources effectively.

Importance of Operating Systems

Operating systems are essential for the functioning of computers and mobile devices. They control all basic functions of a device, such as:

  • Process Management: Managing the execution of processes.
  • Memory Management: Handling memory allocation and deallocation.
  • File System Management: Organizing and managing data on storage devices.
  • Device Management: Communicating with hardware devices.
  • Security and Access Control: Ensuring authorized access to the system.

Popular operating systems include Windows, Linux, macOS, Android, and iOS. Each of these systems is designed to cater to different types of devices, ranging from personal computers to mobile phones and servers.

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Operating System Tutorial

Operating System Tutorial

MODULE 1 : Introduction to OS
lessonWhat is an Operating System?
lessonIntroduction to Operating System
lessonEvolution of Operating Systems
lessonTypes of Operating Systems
MODULE 2 : Process and Multithreading
lessonOperating System Processes
lessonProcess Scheduling
lessonCPU Scheduling
lessonFirst Come First Serve
lessonShortest Job First(SJF)
lessonPriority Scheduling Algorithm
lessonRound Robin Scheduling Algorithm
lessonMultilevel Queue Scheduling
lessonMultilevel Feedback Queue Scheduling Algorithm
lessonComparison of CPU Scheduling Algorithms
lessonIntroduction to Threads
lessonProcess Synchronization
lessonClassical Synchronization Problems
lessonBounded Buffer Problem
lessonDining Philosophers Problem
lessonReaders Writer Problem
lessonSemaphores in OS
lessonDeadlocks
lessonClassical Problems of Synchronization
lessonDeadlock Prevention in OS
lessonDeadlock Avoidance in OS
lessonDeadlock Detection and Recovery
MODULE 3 : CPU Scheduling
lessonHRRN Scheduling
lessonShortest Remaining Time First
lessonLongest Job First Scheduling
lessonLongest Remaining Time First Scheduling
MODULE 4 : Memory Management
lessonPartition Allocation Methods
lessonMemory Management
lessonVirtual Memory
lessonFile System
lessonBanker's Algorithm
lessonSecondary Storage in OS
lessonResource Allocation Graph in Operating System
lessonSystem Calls in Operating System
lessonMemory Management in OS
lessonLogical and Physical Address in OS
lessonSwapping in OS
lessonContiguous Memory Allocation in OS
lessonPaging in OS
lessonStructure of Page Table in OS
lessonSegmentation in Operating Systems
lessonPaging vs Segmentation in OS
lessonContiguous vs Non-Contiguous in OS
lessonPaging vs Swapping in OS
lessonInternal vs External Fragmentation in OS
lessonVirtual Memory in OS
lessonDemand Paging in OS
lessonCopy-on-Write in OS
lessonPage Fault in OS
lessonPage Replacement Algorithms in OS
lessonThrashing in OS

Operating System Tutorial

MODULE 1 : Introduction to OS
lessonWhat is an Operating System?
lessonIntroduction to Operating System
lessonEvolution of Operating Systems
lessonTypes of Operating Systems
MODULE 2 : Process and Multithreading
lessonOperating System Processes
lessonProcess Scheduling
lessonCPU Scheduling
lessonFirst Come First Serve
lessonShortest Job First(SJF)
lessonPriority Scheduling Algorithm
lessonRound Robin Scheduling Algorithm
lessonMultilevel Queue Scheduling
lessonMultilevel Feedback Queue Scheduling Algorithm
lessonComparison of CPU Scheduling Algorithms
lessonIntroduction to Threads
lessonProcess Synchronization
lessonClassical Synchronization Problems
lessonBounded Buffer Problem
lessonDining Philosophers Problem
lessonReaders Writer Problem
lessonSemaphores in OS
lessonDeadlocks
lessonClassical Problems of Synchronization
lessonDeadlock Prevention in OS
lessonDeadlock Avoidance in OS
lessonDeadlock Detection and Recovery
MODULE 3 : CPU Scheduling
lessonHRRN Scheduling
lessonShortest Remaining Time First
lessonLongest Job First Scheduling
lessonLongest Remaining Time First Scheduling
MODULE 4 : Memory Management
lessonPartition Allocation Methods
lessonMemory Management
lessonVirtual Memory
lessonFile System
lessonBanker's Algorithm
lessonSecondary Storage in OS
lessonResource Allocation Graph in Operating System
lessonSystem Calls in Operating System
lessonMemory Management in OS
lessonLogical and Physical Address in OS
lessonSwapping in OS
lessonContiguous Memory Allocation in OS
lessonPaging in OS
lessonStructure of Page Table in OS
lessonSegmentation in Operating Systems
lessonPaging vs Segmentation in OS
lessonContiguous vs Non-Contiguous in OS
lessonPaging vs Swapping in OS
lessonInternal vs External Fragmentation in OS
lessonVirtual Memory in OS
lessonDemand Paging in OS
lessonCopy-on-Write in OS
lessonPage Fault in OS
lessonPage Replacement Algorithms in OS
lessonThrashing in OS

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HCL GUVI (Grab Your Vernacular Imprint) Geek Network Private Limited is a leading online learning and skills development company, incubated by IIT Madras and IIM Ahmedabad.

Established in 2014 and acquired by the HCL Group in 2022, HCL GUVI is dedicated to providing effective and high-quality learning and skilling programs that transcend language barriers in technology education. HCL GUVI today is trusted by over 3 million learners and 2000+ corporate partners.

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HCL GUVI (Grab Your Vernacular Imprint) Geek Network Private Limited is a leading online learning and skills development company, incubated by IIT Madras and IIM Ahmedabad.

Established in 2014 and acquired by the HCL Group in 2022, HCL GUVI is dedicated to providing effective and high-quality learning and skilling programs that transcend language barriers in technology education. HCL GUVI today is trusted by over 3 million learners and 2000+ corporate partners.

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