Writing 5

Operating System

Now, I’m going to explain the basics off an operating system. 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 software correctly.Operating systems provide a software platform on top of which other programs called application programs, can run. The application programs must be written to run on top of a particular operating system. Your choice of operating system, therefore, determines to a great extent the applications you can run. For PCs, the most popular operating systems are DOS, OS/2 and Windows, but others are availbale, such as Linux.

     First, 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  OSmust 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.

Next, Popular operating systems

The three most popular types of operating systems for personal and businesses computing include Linux, windows and Mac

·       Linux operating systems

Linux is a freely distributed open source operating system that runs on a number of hardware platforms. The Linux kernel was developed mainly by Linus Torvalds and it is based on Unix.

·        Mac Operating Systems

Mac OS is official name of the Apple Macintosh operating system. Mac OS features a graphical         user interface (GUI) that utilizies windows, icons and all applications that run on a Macintosh             computer have a similar user interface.

·         Windows operating system

Microsoft Windows is a family of operating systems for personal and business computers. Windows dominates the personal computer world, offering a graphical user interface (GUI), virtual memory management, multitasking and support many peripheral devices

Then, There are four  essential managers of every OS and they all work together like team to get jobs completed. An operating system is simple term it’s chief program that manages all of the hardware and software . It is works as their bass and makes sure they are all working in harmony.

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

1.      Single contiguous allocation

2.      Partitioned 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 RAM), GRAM (Graphical RAM), chips, memory caches and flash based SSDs (Solid Star Drives)

2.    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.

3.    A file manager or file browser is a computer program that providers a user interface to  and folders.It has limited capalities and is designed to manage individual or group files, such as special office documents and records. A file management sustems is also known as a file manager.File manager is a software program that helps a user manage all the files on their computer.For example, all the managers allow the user to view, edit, copy and delete the files on their computer.

4. Network management is the process of administering and managing the computer networks of one or many organisations. Various services provided by network managers include fault analysis, performance management, provisioning of network and network devices.

5.     The Process manager  is an integral part of any modern-day operating system (OS). The OS must allocate resources to processes, enable processes to share and exchange information, protect the resources of each process from other processes and enable synchronization among processes.

Ø    

Finally, Operating systems provide a software platform on top of which other programs called application programs, can run. It is very important as it works as a middleman making sure both hardware and software correctly. Without an operating system, a computer useless.