Functions Of Operating Systems

Operating system is the program, which often installed in to the computer by way of a boot program. It handles all the programs in computer. Sometimes it also called as "OS". These programs also known as applications. The application uses the operating-system by making demands for services through API (Request Program Software). Sometimes users can directly use the operating system through GUI (Graphical Users User interface) or command language. Operating-system is an application which allows you to work with hardware and software on your computer. Quite simply, there are two ways to make use of operating system on your computer. The two ways are as follows: 1. for ex. , DOS, you type a text message commands and computer give respond to you regarding to your command line. That is called command collection operating-system. 2. Having a GUI (Graphical User Interface) operating-system (ex. , glass windows). You connect with the computer through graphical user interface with pictures and switches by using the mouse and keyboard.

An operating system is software that permits the computer hardware to speak and function with the software applications. Most desktop or notebooks come or preloaded with Microsoft house windows. Macintosh computers contain Mac pc OS. Many computers or servers use the Linux or UNIX operating system. The operating system is the initial thing loaded on the computer- without operating system (OS) the computer is inadequate and we can not do any functions on it. Now at the moment, os's have started to use OS in small computers as well. If we mess with gadgets, we can easily see the operating system in many of the devices, which we use every day, from mobile phone to wireless access tips. The computer used in these little devices is more powerful and they can simply run operating-system and applications of it.

The main aim of the operating-system is to arrange and control the hardware and software so that the device behaves in a adaptable way. All personal computers will not having os's, for ex - the computer that controls the microwave oven in your kitchen, does not need operating system to work because it has only one set of job to do. The most frequent window operating systems developed by Microsoft. You will discover other hundreds of other operating system available for special-purpose applications, including creation, robotics, and mainframes etc.


As we speak about operating system, it does a couple of things at the simplest level

It handles the hardware and software resources of the machine. In desktop personal computers these resources such as processors, memory space disk space plus more.

It provides stable, regular way of applications to deal with the hardware without having the full details of the hardware.

The first process, taking care of the hardware and software resources and it is very important. The many programs and source methods complete for the interest of the Central Control Device (CPU) and demand recollection, storage and input/output (I/O) bandwidth for his or her own purposes. In this capability the operating-system plays the nice role of an good parent or guardian, and making sure that each software gets the necessary resources while participating in efficiently with all other applications, as well as it performs good role of husbanding the limited capacity of the machine.

The second process is mainly important if there is several of a specific kind of computer using the operating-system. A constant software program user interface (API) allows software to create an application on one computer and have a confidence to create a same software on other computer of the same type, even if the amount of the storage or the quantity of storage is different on the two machines. When computer is unique, an operating system can ensure that applications continue to run when hardware improvements and updates take place. This is because of the operating-system not the applications. One of the challenges facing developers is keeping their os's flexible enough to run hardware from the thousands of vendors manufacturing computer equipment.


Within the family of operating system, there are four types of operating-system based on the types of computers. The categories are

Real-time operating-system (RTOS) - Real-time operating-system used to regulate machinery, scientific equipment and industrial system. An RTOS scarcely have little user-interface capacity, and no end-user utilities. An essential part associated with an RTOS is managing the house of the computer so that particular operations executes in same timeframe. In a complex machine, having a component move more quickly because system resources are available may be just like catastrophic as having it may not move by any means because the system is busy.

Single-user, single process - As the name suggests, this operating-system is designed to manage the computer so that you end user can do a very important factor at a time. The Palm Operating-system for Hand handheld computer systems is good example of modern single consumer, single task operating system.

Single-user, multi tasking - That is very popular operating system; most people utilize this operating system on their desktop and laptop today. Microsoft's Windows and Apple's Apple pc Operating-system are both exemplory case of single end user, multi tasking operating-system. It'll let an individual end user have several programs in procedure at same time. For example, it's possible in Windows to create a not in Microsoft word while downloading a file from the web while printing the text on e-mail communication.

Multi- consumer - A multi customer operating-system allows many users to consider good thing about the computer resources simultaneously. The operating-system ensure that the requirements of the many users are well balanced, and each one of the program they are using has sufficient and split resources so that the condition with one users doesn't impact the community of the users. UNIX, VMS and main framework operating systems, such as MVS, are the examples of the os's. It's important to differentiate multi individual operating system and single user operating-system that support networking. Windows 2000 can support hundreds or thousands of networked users.

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