Essay 6

                                                                Operating system

         Now we are going to explain the basics of OS.This is an interface between a computer user and hardware.It is very important as it works as a middleman making sure both hardware and sogtware.Correctly there are 4 essential managers of every OS and they all coork together like team to get jobs completed.

          First, Memory managment is the function that controlling and coordinating memory location and either allowsted or free blocks to varoius programms to optimize overall system perpormance.These are 4 types of technique ways to manage memory

       1. Single configous allocation.

       2. Partiction allocation 

       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 Random Access Memory), GRAM(Graphic Random Access Memory) chips, memory caches and flash based SSPs(Sold Store drives)

         Next.The basic unit of software that the operating system   with in scheduling work done by the processor is either a process or a thread depending on the OS.It is processes rather than applications to begin running suspending the execution only long enough to deal with the interrupts and user input. Process management is an integral port of any modern-day operating system the OS must allocate resources to processes enable processes to share and exchange information protect the resources of each process from the processes and enable synchronization among process.To meet these requirements the OS must mountain the data .Structure for each process, which describes the state and resource owner ship of that process and which enables the OS to exert control over each process.

         After that Device manager is Control Panel applet in Microsoft Windows operating system. It allows user 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 management 

does the following activities for device manager keep track of all devices, decides.this process gets the device.allocates the devices in the efficent way de-allocated devices.Device manager important to make sure. It's well designed.

Device drivers 

Device detection 

asynchronous I/O

Power managment 

Userspace exposure

Exciting driver interface

          Next. A file manager or file file browser is a computer programm that provides a user interface to manage files and folders.It has limited capalities and is designed to manage individual or group files such as special office documents and records.File managment describes the fundamental methods for meming storming and handling files.by using appropriate file and folder making strategies along with good practice and catalog software.You can make the most of your image collection.

          Finally. An OS is simple term. It's the chief program that manager all of the hardware and software,It;s coocks as their bass and makes sure they all working in harmony.