OPERATING SYSTEM I

About Course

An operating system (OS) is a software program that serves as an intermediary between computer hardware and user applications. It provides a set of essential services and functions, managing hardware resources, facilitating user interaction, and ensuring the smooth execution of software applications. The operating system acts as a critical layer of abstraction, simplifying complex hardware interactions for users and application developers.

What Will You Learn?

  • Process Scheduling
  • Process Management
  • Starvation Real Memory Management Early System
  • Paged Memory Allocation

Course Content

DEFINITION AND HISTORY OF OPERATING SYSTEM
An operating system (OS) is a software component that acts as an intermediary between computer hardware and user applications. It provides a platform for managing and coordinating the various hardware and software components of a computer system, facilitating efficient and organized execution of tasks. The operating system plays a crucial role in resource allocation, process management, memory management, and user interaction, ensuring the overall functionality and usability of a computing device.

  • OPERATING SYSTEM STRUCTURE-MONOLITHICS SYSTEMS, LAYERED SYSTEM, VIRTUAL MACHINE
    00:00

CLIENT SERVER MODEL PROCESSES
The client-server model is a distributed computing architecture where tasks or processes are divided between clients and servers. This model enables efficient and scalable interaction between multiple computing entities. In the client-server architecture, clients request services or resources from servers, which respond to these requests. Here is a brief overview of the processes involved in the client-server model

INTER-PROCESS COMMUNICATION
Inter-Process Communication (IPC): Inter-Process Communication refers to the methods and mechanisms by which different processes in a computer system communicate and share data with each other. In a multitasking or multi-process environment, IPC is crucial for coordination, synchronization, and data exchange between concurrently running processes. Several IPC mechanisms are employed based on the specific requirements of the processes involved. Here are some common IPC methods

PROCESS SCHEDULING
Process scheduling is a crucial aspect of operating system design that involves the efficient allocation of the CPU (Central Processing Unit) to processes in a computer system. The primary goal of process scheduling is to optimize system performance, ensuring fair and timely execution of processes while maximizing CPU utilization. Various algorithms and strategies are employed to manage the scheduling of processes.

PROCESS MANAGEMENT
Process management is a fundamental aspect of operating systems that involves the control and coordination of processes in a computer system. A process is an executing instance of a program, and process management is responsible for their creation, scheduling, termination, and communication. This ensures the orderly execution of tasks and efficient utilization of system resources.

STARVATION REAL MEMORY MANAGEMENT EARLY SYSTEM
Starvation in Real Memory Management (Early Systems): In the context of real memory management in early computer systems, starvation refers to a situation where a process is unable to obtain the required memory resources for an extended period, hindering its execution. Real memory (RAM) is a finite resource, and managing its allocation is a critical aspect of operating systems

PAGED MEMORY ALLOCATION
Paged memory allocation is a memory management technique used in computer operating systems to efficiently utilize physical memory. In a paged memory system, the physical memory is divided into fixed-size blocks called "pages," and the logical memory of a process is divided into blocks of the same size, known as "frames." This approach allows for a more flexible and efficient use of memory space.

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