Explain The Purpose Of Operating Systems Computer Science Essay

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The purpose of an operating system (OS) is to arrange and manage hardware as well as software in order that the device it is located in performs well in a supple and expected manner. The OS is the initially loaded on a computer; if the OS is not included then the computer is hopeless. The OS is significant software required to activate programs as well as handle data and files on PC. The OS carries out jobs like identifying input peripherals, such as the mouse as well as showing the output information through screens that permits the user of the computer to start up programs as well as manage devices or even interact with other PC's. For numerous computers, laptops, PDAs, etc, the OS provides the skill to:

Provide a range of uses

Communicate with other users by numerous methods

Maintain the requirements, which alter after a while


Operating Systems:

Windows by Microsoft - Windows is an operating system that is created by Microsoft, Windows, which makes good regular use of GUI (graphical user interfaces) that enables it to be user-friendly Microsoft Windows is used on the IMB-compatible PC's. Instead of entering instructions, the user nowadays points out their choice by clicking on an option on the menu either by pushing a button or finishing of a range of option boxes on a form. The Windows OS can cope with data varying from 16 to 64 bits, which depends on the year it was made, also it very efficient in support of multi-users. http://www.dl4all.com/jwv/tag/windows+blinds+collection.html

Apple MAC OS - is a corresponding system of software's intended for users who prefer not to pursue the IBM-PC hardware suite. The MAC OS also contains a GUI; this operating system is sold under the name of the Apple Inc. The Apple MAC OS is well-known because of its easiness to use as well as it being able to perform a set of tasks at the same time; it can cope with data up to 32 bits as well as compatible with multi-user systems. http://www.seeklogo.com/tag.html?q=O.Ge.Bus&Page=2&Sort=Name-Asc

LINUX - contains the UNIX-type of OS that was developed by a man named Linus Torvalds with help from other software developer around the world. The LINUX is compatible with a variety of devices such as computers to PDAs (Personal Digital Assistant) as well as game consoles. The source code for LINUX is accessible to any users that have internet connection it can deal with data from 32 bits to 64 bits also it is compatible with multi-user systems. http://ebiquity.umbc.edu/blogger/category/general/

DOS (Disk Operating System) - This particular OS can only cope with data as small as 16 bits, which is just for lone users, which can only carry out one job at a time. The DOS was for users that have good understanding of how to use this kind of OS, above all knowing how to use the DOS language to provide instructions. The DOS is used in many computers that supply perception as well as handling secondary storage appliances also the data within them.


Operating System Functions and Services

The OS contains a variety of programs that provide machine as well as peripheral supervision security as well as file supervision in support of disk cleanup and disk defragmenter that offer methods of cleaning as well as organising your disk space.

Machine and Peripheral management - the OS is in charge of the input as well as the output appliances of PC and carries it out to the user in order for them to access as well as start up applications.

Security and File Management - the function of the security on an OS is to look after the important data and keep it away from harms reach, such as hackers and viruses, whereas it is still reachable to the authorised users. The OS organises as well as manages the data stored into the system by creating as well as erasing the data and the location of where the data had been placed as well as the backing of data stored in the computers or a protected storage medium.

Device Drivers - all peripheral devices need a device driver to interact among the processor and other peripherals, the driver operates as decipher in order for data to be converted properly. It is compulsory to install device drivers when a brand new hardware is fitted in.


Ability to Customize - users are able to change the ways of how their operating system works

Support for Connectivity of Portable Media - the operating system offers ways for portable devices to be connected to a computer to transfer data from one computer to another via attaching the devices to the ports the computer contains.

Security - the operating system provides protection to the user's valuable data as well as personal information so no unauthorised users are able to obtain it or even view it.

Stability and Reliability - the OS provides consistency and good services to the user by offering many ways of accessing data as well as offering many programs place data in.

Ease of Management - the OS allows users to organise as well as handle their files neatly in order for them to access them quickly as well as having the awareness of where the files are.

Associated Utilities - the OS provides many associated programs to perform a set of tasks or to do a routine check for unwanted data that need to erase from the system to free up space, scan for viruses, etc.

Support for the User - the OS provides support to the user encase they are finding it hard to completing a task or difficulties in using some applications by offering step by step guidance, which gives them an idea of how to use the application or to complete a task.