How System Units Communicate With Each Other Computer Science

Explain the function of the different system unit component and how they communicate with each other with diagram.

The control circuitry pulls data in via the various ports, directs it along data buses, stores it within the memory, performs calculations on it and sends the results of processing to a VDU screen, to a printer or to a secondary storage device for more processing at a later date.

Task 2: P2

Linux:

Purpose

Features

Function

give people a totally free alternative to Windows

formatting the device in the ext2 filesystem on a single partition and making it work. This is intended for situations where the device will be used exclusively on Linux machines;

formatting the device on a dual partition in the ext2 and vfat filesystems and making it work. The purpose of this is for situations where Linux + Linux and Linux + Windows are possible;

making the device more user friendly;

maintaining the filesystem of the device;

using additional features of Linux-2.6.x.

Linux has evolved to have the following features as an outstanding operating system which is strong in security and networking.

• Multitasking: Several programs can run at the same time.

•Multiuser: Several users can logon to the same machine at the same time There is no need to have separate user licenses.

• Multiplatform: Linux runs on many different CPUs, that means it supports multiprocessor machine.

• Multithreading: Linux has native kernel support for multiple independent threads of control within a single process memory space.

•Crash proof: Linux has memory protection between processes, so that one program can't bring the whole system down.

Linux has CD-ROM file system which reads all standard formats of CD-ROMs.

Linux performs well with TCP/IP networking, including ftp, telnet; NFS

Linux is user friendly as Netware client and server

Linux also runs as Lan Manager/Windows Native (SMB) client and server

Linux also runs as Lan Manager/Windows Native (SMB) client and server 

Shared copy-on-write pages among executables: This means that multiple processes can use the same memory to run in. When one tries to write to that memory, that page (with 4KB piece of memory) is copied somewhere else. Copy-on-write has two benefits: increasing speed and decreasing memory use. 

Demand loads executables: Linux only reads from those parts of a program that are actually used on the disk

•Crash proof: Linux has memory protection between processes, so that one program can't bring the whole system down. 

Linux has CD-ROM file system which reads all standard formats of CD-ROMs. 

Windows XP

PurposeFeaturesFunction

Microsoft Windows is an operating system for computers. It acts as an interface between the hardware and the user. The purpose of Windows is to improve on other operating systems by making it easy to understand for users of all backgrounds. It also try to make the best use of the computer hardware possible by managing its memory effectively.

Enjoy Music & Video with Windows Media Player

Explore Digital Photography with Windows XP

Learn more about Gaming with Windows XP.

Create Home Movies with Windows Movie Maker.

Find out more about Windows XP Professional operating system.

Learn about the ultimate Photo, Music, & Movie Pack for XP

Protect your new Computer.

Web browsing and e-mail

Digital photography

Music and video

TV and multimedia

Making movies

Networking

Setup and maintenance

Working remotely

Pen and ink

Games for windows

Accessibility Instant messaging

Explain use of two different software utility: P3

Disk checkers can scan the contents of a hard disk to find files or areas that are corrupted in some way, or were not correctly saved, and eliminate them for a more efficiently operating hard drive.

Disk cleaners can find files that are unnecessary to computer operation, or take up considerable amounts of space. Disk cleaner helps the user to decide what to delete when their hard disk is full.

Task3: P5

A routine maintenance task will be specified by your instructor:

1. Go to Start > Control Panel then click on scheduled tasks.

2. Click on add scheduled task then:

3. Select a program to use then click next.

4. Click on when the program will start. e.g. 3:45PM every Tuesday, or you can also make it start when you open up the computer.

5. When you have finished, click Finish.

To achieve G, explain the importance of undertaking the routine maintenance :

My routine maintenance consists emptying the temporary folders and files, uninstalling programs not being used anymore, and defragging. My computer does not get infected by spyware or ad ware surprisingly.

I use routine maintenance to avoid the risks of viruses and increase the speed of my computer and make it very useful. Is an essential part of running arising and to save time when diagnosing and fixing faults. It can also extend the life of your PC.

To achieve E, give an example of another routine maintenance task.

Use online tools to prevent viruses from infecting virus

Optimization system using the windows support tools

Regular disk defragmentation and disk files scanned

Task 5: M1

Install and configure the device provided by your instructor:To achieve G, install and configure one deviceTo achieve E, follow all safety procedure during installation, you will observed by your instructor.

Use antistatic wrist straps when working on computers

Use proper screw drive

Clean, organized and proper lit workspace

Keep the workspace clean

Keep most solvents area

Properly returned all the tools used for task

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