Writing5

                                                    Operating system

Hi everybody. My name is Khulan. I am going to school Mongolian University Since Technology.Do you know operating system is five types.

The operating system (OS) is the most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs and applications.
          Now we are going to explain the basis of an operating system.This is an interface between a computer user and hardware.It's very important as it works as a middleman making sure both hardware and soft ware correctly There are 4 essential managers of every OS and they all work together like tern to get jobs completed.

         Memory management is the function that controlling and coordinating memory location and either allocated or free blocks to various programs to optimize overall system performance. There are 4 types of technique ways to manage memory.

1.      Single contiguous allocation

2.      Partitioned allocatio

3.      Paged memory management

4.      Segmented memory management

All this techniques has their own advantages on their own. In hardware memory management involves components that physically store data, such as RAM (Random Access Memory ), VRAM (Virtual RAM), GRAM (Graphical RAM), chips, memory caches and flash based SSDs (Solid Star Drives)

         The basic unit of software that the operating system deals with in scheduling the work done      by the processor is either a process or a thread , depending on the operating system.It is processes rather than applications, that the operating system controls and schedules for execution by the  CPU. In a single –tasking system, the schedule is straight forward.The operating system allows the application to begin running, suspending the execudion only long enough to deal with internepts and user input process management is an integral part of any modern day operating system the OS must allocate resources the processes, enable processes to share and exchange information product the resources of each process from other processes and enable synchronization among process. To meet these requirement is the as must  mountain a data structure for each process, which describes the state and resource ownership of that process, and which enables the OS to exert  control over each process.We are know five types management. In other words Device manager, Memory manager, Process manager, File manager, and Network manager.

Example;

     Device manager is control panel applet in Microsoft Windows operating systems it allows users to view and control the hardware attached to the computer. Hardware devices typically provide the ability to input data into the computer output data from the computer. Device manager is a feature of Microsoft Windows that detects and lists hardware devices and their status information. Device Manager is available in Microsoft Windows 95, 98, ME, 2000, 2003, XP, Vista, 7, 8, and 10.Device management does the following activities for device manager.Keeps track of all devices, decides which process gets the device allocates way, de-allocated device. Device manager important to make sure it’s well designed.

         An operating system is simple term it's the chief programm that manages all of the hardware and software. It wooks as their bass and makes sure they are all in harmony