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Purpose And Function Of Operating Systems Computer Science Essay

What is an operating system well an operating system is system software that allows you to control and manage a computer system as just application software for example Microsoft office cannot talk to the computer’s hardware as for example the hardware speaks Spanish and the hardware speaks German so it needs the operating system to translate/ interpret the language so that you can print, email, scan etc. to sum it all up in a nut shell an operating system allows the computer software to communicate with the system software and the system software to the computer’s hardware.

Also the operating system provides the user with an interactive interface that allows the computer user to interact with the computer’s hardware, system software and the programs and it allows the user to configure and manipulate the computers peripherals and the devices attached.

Different types and versions of operating systems

There are different types and versions of operating systems such as; Windows XP, Windows 2000, Windows 7 etc.

Windows XP Windows Vista Windows 7

Professional SP3 Ultimate SP1 Ultimate

Microsoft Windows Operating systems are licenced per computer for the home user or have a VLK (Volume Licence Key) that are used by businesses.

Cost?

Well the cost of Microsoft Windows is not cheap like some of the other operating systems for example; for students Windows 7 Ultimate costs from £38 from software4students.com. for businesses and members of public anything from £199 - £499 depending where you buy it from.

Linux, there are different versions e.g. Red hat, SuSE, Debian

Linux is an open source operating system that can be modified and sold with licences for between £25 -£90. For example Red Hat Linux has a yearly subscription from £80 - £399 per desk top computer

Apple Macintosh, there are different versions e.g. Snow Leopard, Tiger

Apple Mac’s are licenced system software that normally comes with the apple mac when you buy them but you can purchase an upgrade of the operating system software from £25 - £499 depending on which version you buy

GUI (Graphical User Interface) Vs Command Line Prompt

Windows Power Shell Command Line Prompt Graphical User Interface

GUI works on a point and click system and command line you have to type in everything you want to do so for example if I want to find a file in gui I would go to start my documents and click on the file and it would open but in dos I will have to type it in for example:

C:\Users\James cooper\Documents\cooper.doc and it will open in the appropriate program.

Why is a command line more efficient then gui?

Ok so for a start it can save you money for example you can type “IPCONFIG” and your ip status will show and allow you to configure it but in GUI you would have to purchase a separate costly peace of software going in to the hundreds and/or thousands of pounds

CMD is also used a lot by ict technicians, Admins and programmers as they can do and access more than you can in GUI

Ok so I have explained GUI but and a tiny bit about Command line but what really is command line prompt?

Well the command line prompt is an operating system that is integrated into windows and all of the Microsoft windows operating system. The command line does not contain any icons or a cursor and does not work on a point and click system

Features

There are different features on the Microsoft Windows XP operating system

Task Manager

Task manager is a utility that allows you to see the live current system status (services, performance and networking) and the programs that are running this utility can be used to stop programs and you can access this program by holding down CTRL+ALT+DEL or right clicking on the task bar and selecting task manager

Control Panel

Control panel is a utility that can and is used to manage at alter the system settings such as adding users to configuring you network adapter to access the control panel click start and then control panel

Add printer wizard

The add printer wizard will help you to set up your computers printer to access this you can go to control panel or go to start printer and faxes and then click add printer

Accessibility

wizard

Accessibility wizard allows disabled users to use the computer for example if the user is blind you can set up speech recognition and voice over text so then you are moving the mouse it tells you where you are to access this go to start all programs accessibility ease of use

Remote assistance & desktop

This utility allows to ask for help from eather Microsoft or a friend

Security centre

Security centre allows you to manage you computers security and you can access this by going start control panel and security center

M1 – Compare the features and functions of different operating systems

Features and Functions

Brief Description

Windows XP Professional

Windows 7 Ultimate

Task Manager

Task manager is a utility that allows you to see the live current system status (services, performance and networking) and the programs that are running this utility can be used to stop programs and you can access this program by holding down CTRL+ALT+DEL or right clicking on the task bar and selecting task manager

Yes Windows XP

Contains Task Manager

Yes Windows 7 Contains Task manager there are no real differences in the windows 7 version except it looks smarter and it runs a bit quicker

Control Panel

Control panel is a utility that can and is used to manage at alter the system settings such as adding users to configuring you network adapter to access the control panel click start and then control panel

Yes Windows XP Contains Control Panel

Yes Windows 7 contains the control panel but there have been a few changes to the way it looks for example the add or remove programs has been replaced by programs and features

Windows Gadgets

Windows gadgets are utilities that can be set up by the user and for example instead of making a note in work you can put a virtual post it on the desktop

No Windows XP does not have this feature

Yes windows 7 does have this feature but the win7 gadgets can be moved around the desktop where as in windows vista they were lock to the side of the desktop

Windows Defender

Windows defender was introduced with windows and a digital download became available for windows XP users

Yes but not all features work

Yes but if you have Microsoft security essentials then windows defender will not function

Microsoft Paint

Ms paint is a graphics package that is built in the Microsoft windows operating system

Yes but very basic

Yes ms paint now includes new file formats and now includes the windows ribbon

P3 – Explain the purpose of different software utilities

….WITNESS STATEMENT AND VIDEO PRESENTATION….

…Saved to Paul Clews iPhone…

D1 – Explain how software utilities can improve the performance of computer systems

….NOT ATTEMPTED….

P4 – Recommend a computer systems for a given business purpose

M2 – justify choice of computer systems to meet a given business purpose

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