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Cet 411

The document provides an overview of computer engineering course material for week 1. It defines systems software, program generators, and application packages. It also lists examples of program generators and categorizes different types of software packages.

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ukpeliprecious39
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0% found this document useful (0 votes)
65 views24 pages

Cet 411

The document provides an overview of computer engineering course material for week 1. It defines systems software, program generators, and application packages. It also lists examples of program generators and categorizes different types of software packages.

Uploaded by

ukpeliprecious39
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 24

DELTA STATE POLYTECHNIC, OGWASHI-UKU

COMPUTER ENGINEERING DEPARTMENT

CET 411(COMPUTER APPLICATIONS) LECTURE NOTES


A study guide(not for sale)

Week 1
At the end of Week 1 the Students will be able to:

(i) Explain the difference between Systems Software, Program generators and Application Packages
(ii) Know the different categories of computer Packages
Systems Software:
A System Software is a program that controls and supports operations of a computer system.
System software includes variety of programs such as Operating system, Database
management system; Communications control programs as well as Service and Utility
programs.
Program generators:
These software programs enable an individual to easily create a program of their own with
less effort and programming knowledge. With a program generator a user may only be
required to specify the steps or rules required for his or her program and not need to write any code or
very little code.e.g are Adventure Maker, Alice, Stagecast creator and Yoyo games
Stage Cast creator:
This program generator gives one the power to create an interactive simulations, stories,
games, etc.

Adventure Maker:
This is a program generator that enables users to create point- and click games and virtual
tours for windows.

Yoyo game:
This Program enables individual to come and play, make and share online casual games.

Application Packages:
These are prewritten computer programs designed for special or general purpose tasks. Some
applications packages perform single functions, while others integrate several functions in a
single package

Software Packages
Software packages could be categorized into the following classes:
(i) Word processing Packages
(ii) Electronic spreadsheets
(iii) Database Management Systems (DBMS)
(iv) Desktop publishing Packages (DTP)

Week 2

At the end of week 2, the students will be able to:


(1) Identify the modes of Packages acquisition
(2) State the criteria for Packages Acceptability
(3) Understand Windows

Modes of Packages Acquisition


These are ways the users acquire the software packages for use: Software packages could be
acquired through the following ways:
(i) Buying from Software Developers
(ii) Renting from Software Houses
(iii) Buying from Software Vendors
(iv) Hiring from Software Developers
(2) Criteria for Packages acceptability
(i) Whether the Packages meet the users needs
(ii) Whether the packages meet up with the processing requirements
(iii) Whether the packages are affordable by those who need them
(iv) Whether the packages are reliable
(v) Whether the packages are

(3) Concepts of Windows:


Windows is a graphical multi user interface that uses icons that represent tasks and allows
multitasking operation
What is a Graphical User Interface?
A Graphical User Interface (GUI) is simply an additional part of the operating system that
displays windows and drop down menus, and also enables you to drive your computer using a
mouse. Examples of operating system that use a GUI include Windows and IBM's OS/2.
The advantages of using a GUI
All programs look similar and when you switch from a program supplied by one manufacturer
to one from a different manufacturer

Week3

At the end of week 2, the students will be able to:


(I) Know what Spreadsheet is
(2) Know concept of Spreadsheet
(3) Know advantages and disadvantages of spreadsheet
(4) Know application areas of Spreadsheet
er, you will find the transition very easy.
Application programs work in the same way as the underlying operating system.
The GUI also allows programmers to easily write consistent looking programs
SPREADSHEET
A Spreadsheet is a Programmable Application Package that mostly operates with Rows and
Columns of numbers on the Screen and allows the users to enter Values, Labels and Formulas
for automated calculations of some expected results. As the name suggests, Spreadsheets were simply a
means of spreading figures or numeric data items over a sheet of paper and carrying
out calculations on them.
Typical examples of Spreadsheet Programs include the following:
 Ms Excel
 Lotus 1-2-3
 Multiplan
 Supercalc
 Viewsheet
 Pipedream
 Quattro
 Eureka

WORKBOOK

A Workbook is a File in which users work and store their data. Each Workbook contains
many Worksheets that allow users to organize various kinds of related information in a single
File. Stated in another way, a Workbook is a collection of several Worksheets. Ms Excel
Workbook contains a minimum of one Worksheet and a maximum of two hundred and fifty

A Worksheet is the Primary document that the user uses in Ms Excel to store and work with data. A
Worksheet consists of cells that are organized in Rows and Columns. A typical Worksheet is made up of
256 Columns by 65,536 Rows. It is sometimes called a Spreadsheet.
CELL
A cell is any rectangular box in the Worksheet that is formed as a result of the intersection of a Row and
a Column. A Cell is identified by a Cell name or Address, which is formed by combining a Column name
with a Row name.
RANGE
A range is any rectangular collection of Cells.

LABEL
A Label is any Worksheet data entry that consists of text. A Label cannot be used for Computations or
Calculations but are mostly used for Column heading in the Worksheet.
VALUE
A Value is any Worksheet data entry that consists of numbers. A Value is used for Calculations or
Computations.
FORMULA
A Formula is any Expression that computes a Numeric result. Usually, a Formula begins with the sign of
equality (=).
FUNCTION
A Function is an in-built Formula for automatic calculations. A Function is sometimes refers to as built-in
calculations and data manipulations that perform work on Formulas and Values.
FILL HANDLE
A Fill handle is a cell pointer’s box that you can Click and drag to extend and copy the cell’s contents ive
(255) Worksheets.

WORKSEET
It is also a black square box at the bottom right hand corner of an active cell through which the user can
click and drag to
copy and paste the cell’s contents.
WIZARD
A Wizard is a Step-by-step set of dialogue boxes that guide the user through the creation of a document
or that
guide the user on how to accomplish a specific task.
OFFICE ASSISTANT
An Office Assistant is an Animated cartoon Character that appears on the Screen and offers useful advice
as the
user uses Office Program.
ARGUMENT
An Argument is a value that a Function operates with or it is a value that a Function uses in performing
calculations. Argument usually appears inside a Function’s parentheses.

ABSOLUTE ADDRESS
An Absolute address is an address that references cells using their specific addresses and does not c
cell holding the Formula is copied.
RELATIVE ADDRESS
A Relative Address is an Address that references cells based on the current cell’s location and will c
cell holding the Formula is copied.

ADVANTAGES OF SPREADSHEET
 Spreadsheet automates most of the manual computations using Formulas and Functions.
 Spreadsheet comes with a large worksheet editing area for the User’s work.
 There is inclusion of Facility for creating sophisticated and Professionally looking charts.
 There is inclusion of Database Management Facility for the user’s need.
 Communication is possible between Spreadsheet Programs and other Windows - based Pro
 With Spreadsheet, Financial documents and other confidential documents can be protected
unauthorized access.
 Spreadsheet is a Flexible and a User Friendly Application Package.

DISADVANTAGES OF SPREADSHEET
 Protected documents (Pass worded documents) cannot be retrieved if the name of the Password is
forgotten.
 Corrupted Spreadsheet files can cause draw back to Managers since it can lead to lose of
information.
 Despite its popularity, flexibility and ease of use many Users can still not afford to acquire
Package.
 Hidden Source code makes it quite impossible for the user to modify the Program to include
Facilities or Features he/she may need to work with.

TASKS SUITABLE FOR SPREADSHEET AUTOMATION


The following tasks are particularly suitable for Spread Automation:
 Payroll Calculations
 Invoicing

 Budget Preparations/Calculations &

 Sales Analysis & Forecasting


 Inventory Control
 Investments Plans
 Examinations Results Processing
 Balance Sheet Preparation
 Journals and Ledgers Transactions
 Preparation of various Accounts

Week4

At the end of week 2, the students will be able to:


(I) Know what Word processor is
(2) Know concept of Word processing
(3) Know advantages and disadvantages of spreadsheet
(4) Know major features of a Word processor
Word processor:
This is an Application software package that enables the user to type, edit, format, store,
retrieve and print mainly text-based document. Put in another way, this package turns an
electronic computer into an electronic typing machine. Examples of Word processors include:
(i) Ms Word
(ii) MultiMate
(iii) AmiPro
(iv) Word Perfect
(v) Note pad
(vi) Word star
(vii) Letter Perfect

(2) Concepts of Word Processing:


Word processing is the activities of typing, editing, formatting, storing, retrieving and printing
mainly text-based document with computer

Software
What is an Operating System?
• The operating system is a special type of program that loads automatically when you start
your computer. The operating system allows you to use the advanced features of a modern
computer without having to learn all the details of how the hardware works. There are a
number of different types of operating system in common use. The IBM PC (Personal
Computer) was introduced way back in 1981 and was originally supplied with an
operating system called DOS (Disk Operating System). This operating system was very
basic, and you had to be a bit of a computer expert just to understand how to use it. It was
NOT user-friendly. Later on, Microsoft introduced Windows and this is the operating
system that is most widely used on PCs today. To complicate matters further, there are a
number of different types of Windows. The first widely used version of Windows was
called Windows 3.1. This was more powerful than DOS and far easier to use. It had a
Graphical User Interface (GUI), i.e. you could 'drive' it using a mouse and drop down
menus. Later versions of Windows include Windows 95, Windows NT, Windows 98,
Windows 2000 and Windows XP. The good news is that later versions of Microsoft
Windows look almost identical to each other and are all much easier to use than Windows
3.1.

Main functions of an operating system


• The operating system is a special type of program that loads automatically when you start
your computer. The operating system allows you to use the advanced features of a modern
computer without having to learn all the details of how the hardware works. There are a
number of different types of operating system in common use. The IBM PC (Personal
Computer) was introduced way back in 1981 and was originally supplied with an
operating system called DOS (Disk Operating System). This operating system was very
basic, and you had to be a bit of a computer expert just to understand how to use it. It was
NOT user-friendly. Later on, Microsoft introduced Windows and this is the operating
system that is most widely used on PCs today.
To complicate matters further, there are a number of different types of Windows. The first
widely used version of Windows was called Windows 3.1. This was more powerful than
DOS and far easier to use. It had a Graphical User Interface (GUI), i.e. you could 'drive' it
using a mouse and drop down menus. Later, different releases of Windows were
introduced. The good news is that later versions of Microsoft Windows look almost
identical to each other and are all much easier to use than Windows 3.1.
IBM produced an operating system called OS/2 but this was largely ignored and is only
used by a few companies.

UNIX and Linux are other examples of operating systems that may be run on PCs

Other types of computers, such as those manufactured by Apple have a completely


different operating system.

What is a Graphical User Interface?


A Graphical User Interface (GUI) is simply an additional part of the operating system that displays
windows and drop down menus, and also enables you to drive your computer
using a mouse. Examples of operating system that use a GUI include Windows and IBM'OS/2.
advantages of using a GUI
All programs look similar and when you switch from a program supplied by one
manufacturer to one from a different manufacturer, you will find the transition very easy.
Application programs work in the same way as the underlying operating system.
The GUI also allows programmers to easily write consistent looking programs.

What is an application program?


An application program is the type of program that you use once the operating system has been loaded.
Examples include word-processing programs (for producing letters, memosetc), spreadsheets (for doing
accounts and working with numbers), databases (for
organizing large amounts of information) and graphics programs (for producing pictures,advertisements,
manuals etc).
rd processing
A word processing program (such as Microsoft Word) allows you to easily produce
letters, memos, etc. You can easily mail merge a list of names and addresses to produce
mass mailers, individually addressed to customers or subscribers.

Spreadsheets
A spreadsheet program (such as Microsoft Excel) allows you to work out a company’s
income, expenditure and then calculate the balance. It enables you to make 'what if' type
projections of how the company will fair in the future and to forecast how changes in prices will affect
profits.

Databases
A database program (such as Microsoft Access) allows you to compile information and
then to search this information to extract just the information you require. For instance, ifyou have a
database of all the equipment housed within an office you can very simply
produce a report listing only the equipment above a certain value.

Presentation
A presentation program (such as Microsoft PowerPoint) allows you to produce
professional looking presentations, which can be printed out directly onto slides for use
with an overhead projector. Alternatively, you can display your presentations directly on computer
screen.

Web browsing
These applications allow you to view and interact with the World Wide Web (WWW).
Web authoringThese applications allow almost anyone to create a web site, quickly and easily.

Week 5

Getting to Know Windows

Understanding Windows XP

What is Windows XP?

· Windows XP is the newest Microsoft operating system. Based on Windows 2000

Professional and powered by the new Windows Engine, Windows XP is said to be more

reliable, efficient, secure, and easy to use. Features new to Windows XP include: an

updated user interface; new multimedia, communications, and networking features; a new

Help and Support Center; plus other new and improved experiences.

Note: Windows XP is available in Home and Professional editions. This training manual

covers Windows XP Professional.

The New Windows Engine

· Windows XP is built on the code base of Windows 2000 and Windows NT that feature a

32-bit computing architecture and a fully protected memory model. Enhancements added to Windows
XP include improved document recovery, improved application and hardware compatibility, system
memory protection, and system stability.
Windows XP System Requirements

To use Windows XP Professional, your system must have:

· 300 megahertz or higher processor clock speed (minimum 233 megahertz).

· 128 megabytes RAM or higher (minimum 64 megabytes).

· 1.5 gigabytes available hard disk space.

· Super VGA (800x600) or higher resolution video adaptor and monitor.

· CD-ROM or DVD Drive.

Note: To use certain features in Windows XP, your system will require additional functionality. For
example, Internet and e-mail functionality requires an Internet connection.

Using the Microsoft Web Site

· The Microsoft Windows XP Professional Web site provides Windows XP users with

support, downloads, tips, and product information. You can visit their Web site at

http://www.microsoft.com/windowsxp/pro/default.asp.

Getting to Know the Windows XP Environment

Working with the New Windows XP Interface

· Windows XP offers a bright new visual design. The Start menu, taskbar, and other desktop elements all
have new looks. Features new to Windows XP keep the desktop and taskbar less cluttered and the Start
menu personalized to your preferences.
Using the Start Menu
· The Start menu provides access to the most useful items on your computer including all
programs, most recent documents, help and support, and other items on your computer.
Windows XP includes more Start menu customization options.
To access the Start menu:
· Click the Start button at the bottom-left of the screen:

Using Icons
· Files, folders, and programs are represented by icons. A file's icon is represented by the
program the file was created in. Folder icons usually look like a folder. Some folders can
have a customized icon applied to them. The name of the file, folder, or program is
displayed under the icon.
· The Recycle Bin is the only folder displayed on the desktop when you first start Windows
XP:
To open a file, folder, or program:
· Double-click on the file, folder, or program icon.
Using Windows
· Windows are frames on the desktop that contain the contents of opened files, folders, and
programs:
Accessing the Most Frequently Used Programs
· The most frequently used programs are automatically displayed at the beginning of the
Start menu. Although only five programs are displayed at the beginning of the Start
menu when you use Windows XP for the first time, the Start menu will display up to six
frequently used programs by default.
Accessing Internet and E-mail Programs
· By default, Internet and e-mail programs are displayed above the most frequently used
programs. You will notice that a separator line divides the two sections. The top section
above the most frequently used programs is known as the pinned items list. The pinned
items list is static and does not change or update like the most frequently used programs.
To access Internet and e-mail programs:
· Click the Start button.
· Select the Internet or e-mail program you want to open:

Note: Customizing the pinned items list is discussed later in this chapter.
Accessing All Programs
· Clicking on All Programs in the Start menu opens a list of applications available on your
computer.
To access All Programs:
· Click Start > All Programs.
· Select the application you want to open:

To add applications to the Startup folder:


· Click Start > All Programs.
· Right-click on Startup.
· From the pop-up menu, select Open:

· This opens the Startup window.


· Create a shortcut of the application you want to add to the Startup folder.
· Cut and paste the shortcut into the Startup window.
Note: Creating shortcuts and cutting and pasting files, folders, and programs, is discussed
in more detail later in this training manual.
Running Programs and opening Folders and Documents
· The Run command on the Start menu allows you to run programs, open folders and
documents, or go to a Web site.
To display the Run command:
· Click Start > Run. This opens the Run dialog box:

Type the name of the program, folder, document, or Web site you want to run or open.
· Click OK.
Customizing the Start Menu
Selecting a Start Menu Style
· The Windows XP Start menu has a new design and layout. For those users that prefer the
Start menu style of older Windows versions, the Start menu can be changed to the
Classic Start menu.
Selecting a Start Menu Icon Size

· In the Start menu, an icon is displayed to the left of each program, folder, or file,
providing a visual representation of the corresponding program, folder, or file. The size of
the icons can increase or decrease the overall size of the Start menu.
To increase or decrease the size of Start menu icons:
· Right-click on the Start button.
· From the pop-up menu, select Properties. This opens the Taskbar and Start Menu
Properties dialog box.
· Click the Customize button.
· Select the Large icons or Small icons option button in the Select an icon size for
programs area:
Changing the Number of Programs Displayed in the Start Menu
· The Start menu displays six frequently used programs by default. When you remove a
program from the frequently used programs list, it is replaced by another program.
To customize the number of frequently used programs displayed in the Start menu:
· Right-click on the Start button.
· From the pop-up menu, select Properties. This opens the Taskbar and Start Menu
Properties dialog box.
· Click the Customize button.
· Click the up and down arrows on the Number of programs on Start menu box in the
Programs area:
· Click OK.
· Click OK again to exit the Taskbar and Start Menu Properties dialog box.
Note: To clear all programs displayed in the frequently used program list, click the Clear
List button.

Displaying Recent Documents


· The My Recent Documents folder displays the most recent documents you have opened.
The My Recent Documents folder is located among the Start menu items with a blue
background:

Customizing the Desktop and Taskbar


Customizing the Desktop
Applying a Desktop Theme
· A desktop theme affects the whole look of your desktop, including the desktop
background, screen saver, window appearance, pointers, and sounds. You can choose
between the Windows XP or Windows Classic theme, or create your own theme. By
default, the Windows XP theme is applied the first time you start Windows XP:

Applying a Desktop Background


· The desktop background can be customized with a picture, texture, or color. You can
choose from Windows XP backgrounds or use your own images.
To apply a desktop background:
· Right-click on the desktop.
· From the pop-up menu, select Properties. This opens the Display Properties dialog box.
· Click the Desktop tab.
· Select a background from the Background list.
· Click OK.
Applying your own Image to the Desktop Background
· Select the picture in the My Pictures folder that you want to apply as the desktop
background.
· Click the Set as desktop background link in the task panel:

Applying a Screen Saver


· A screen saver is activated automatically after your computer has been idle for the number
of minutes specified in the Wait box. The screen saver will automatically return you to
your work unless you have password protected the screen saver.
To apply a screen saver:
· Right-click on the desktop.
· From the pop-up menu, select Properties. This opens the Display Properties dialog box.
· Click the Screen Saver tab.
· Select a screen saver from the Screen Saver drop-down menu.
· Click the Preview button to preview the screen saver.
· Click OK.
Note: To change screen saver settings, such as the color or speed of a screen saver, click
the Settings button.
OR
· Click Start > Control Panel > Appearance and Themes.
· Click Choose a screen saver in the Pick a Task area. This opens the Display Properties
dialog box at the Screen Saver tab.
· Select a screen saver from the Screen Saver drop-down menu.
· Click the Preview button to preview the screen saver.
· Click OK.
Password Protecting a Screen Saver
· Right-click on the desktop.
· From the pop-up menu, select Properties. This opens the Display Properties dialog box.
· Click the Screen Saver tab.
· Check the On resume, password protect box.
· Click OK.
Note: Your password is the same password with which you log on to Windows XP.
OR
· Click Start > Control Panel > Appearance and Themes.
· Click Choose a screen saver in the Pick a Task area. This opens the Display Properties
dialog box at the Screen Saver tab.
· Check the On resume, password protect box.
· Click OK.
Changing Window Appearance
· Colors schemes and font sizes can be modified to customize the appearance of windows.
To change window appearance:
· Right-click on the desktop.
· From the pop-up menu, select Properties. This opens the Display Properties dialog box.
· Click the Appearance tab.
· Make the windows customizations you want.
· Click OK.
Week 6
Working with Accessories
Using Notepad
About Notepad
· Notepad is a Windows XP accessories program that is used for creating simple text
documents.
Opening Notepad
· Click Start > All Programs > Accessories > Notepad.
Entering Text in Notepad
· Begin typing in the Notepad window:

Wrapping Text
· When you type in Notepad, your text stays on one line so the Notepad document gets
wider and wider to accommodate the amount of text. To view all text, you need to use the
horizontal scroll bar.
· To have lines wrap at the end of a line and begin a new line when your text reaches the
end of the document window, you need to turn on Word Wrap.
To turn on Word Wrap:
· From the Notepad main menu, select Format > Word Wrap.
Note: Text will move to different lines when you resize your Notepad window.
Saving a Notepad Document
· From the Notepad main menu, select File > Save. The first time you save a new
Notepad document, you will be prompted for a file name and a file location.
· Select a file location.
· Enter a file name.
· Click Save.
Printing a Notepad Document
· From the Notepad main menu, select File > Print. This opens the Print dialog box.
· Click Print.
Exiting Notepad
· From the Notepad main menu, select File > Exit.
Using Paint
About Paint
· Paint is a Windows XP accessories program that is used to create drawings and make
basic edits to images.
Opening Paint
· Click Start > All Programs > Accessories > Paint:

Drawing a Line with a Pencil


· Click the Pencil button on the Tool Box:
· Click and drag your mouse on the drawing canvas:
Note: To change the color of a drawing tool, click a color in the Color Box.
Drawing a Line with a Brush
· Click the Brush button on the Tool Box:
· Click and drag your mouse on the drawing canvas.
Drawing a Line with an Airbrush
· Click the Airbrush button on the Tool Box:
· Click and drag your mouse on the drawing canvas.
Adding Text
· Click the Text button on the Tool Box:
· Click and drag your mouse on the drawing canvas to create a text box.
· Begin typing.
Adding Shapes
· Click on one of the shape buttons on the Tool Box:
· Click and drag your mouse on the drawing canvas.
Filling Shapes with Color
· Click the Fill button on the Tool Box:
· Select the color you want from the Color Box.
· Click inside the shape you want to fill:
Erasing a Drawing
· Click the Eraser/Color Eraser button on the Tool Box:
· Click and drag your mouse over the drawings you want erased.
Opening an Existing Image
· From the Paint main menu, select File > Open.
· Locate and select the image you want to open.
· Click Open.
Saving an Image
· From the Paint main menu, select File > Save. The first time you save a new Paint
document, you will be prompted for a file name and a file location.
· Select a file location.
· Enter a file name.
· Click Save.
Exiting Paint
· From the Paint main menu, select File > Exit.
Using the Clock
About the Clock
· Your computer clock is automatically synchronized with a network time server or Internet
time server depending on whether your computer is a member of a domain.
Displaying the Clock
· Double-click on the clock in the taskbar notification area. This opens the Date and Time
Properties dialog box:
To set the time:
· Click the up and down arrows next to the time box.
To set the date:
· Select the month from the month drop-down menu in the Date area.
· Click the up and down arrows next to the year box in the Date area to set the year.
· Click a date on the calendar in the Date area to set the day.

Using the Calculator


About the Calculator
· Calculator is a Windows XP accessories program that is used to calculate equations. The
calculator can be viewed as a standard calculator for simple calculations or a scientific
calculator for complex calculations.
Displaying the Calculator
· Click Start > All Programs > Accessories > Calculator:
Switching between the Standard and Scientific Calculator

\
Using the Number Pad
· Click the calculator buttons on the calculator number pad to enter equations
OR use the number pad on your keyboard to enter equations.
Exiting Calculator
· Click the Close button on the Calculator title bar.

Using the Command Prompt


About the Command Prompt
· Command Prompt is a Windows XP accessories program that is used for typing MSDOS
commands.
Opening the Command Prompt
· Click Start > All Programs > Accessories > Command Prompt:

Exiting the Command Prompt


· Type exit at the Command Prompt.
· Press the Enter key on your keyboard.
Using My Computer
· The My Computer folder displays all hard disk drives and removable storage devices
connected to your computer:

· Double-clicking on a drive or removable storage device displays its contents.


To open the My Computer folder:
· Click Start > My Computer.

Using My Documents
· The My Documents folder provides a place to store all of your files. When you save a
document, the default save location is the My Documents folder:

To determine file types


· Within the Windows Explorer window each file will be marked with a small icon, as
illustrated. In the example shown the first file displays an icon representing Microsoft
Word, and if you look along the line of information about this file, it clearly states
(assuming that you are using the details mode to view the files) that the file is indeed a
Microsoft Word Document. The second file is marked as a Microsoft PowerPoint
Presentation file in the same way.

This indicates that somehow Windows knows what a Word file is and what a PowerPoint
file is. This is because when Word and PowerPoint were installed onto the PC the
installation program gave Windows information about files that would be created using
these packages.
If you were to double click on say, the Word file, the Word program would open up, and the data file
that you double clicked on would be displayed within the Word program. To
use the jargon, files created within Word are "associated" with Microsoft Word and all
Word document files have a file extension of .doc
· In some cases Windows does not have detailed information about certain file types. In the
example illustrated, there are two files and the icons used to display them are the generic
Windows default icons. This means that if you were to double click on these files they
would not run or be displayed within a program, for the simple reason that Windows does
not know what to do with these files. There is no "file association" for these particular
files.

Week 13
Working with System Tools
Viewing System Information
· System Information displays information for local and remote computers including
hardware configurations, computer components, software, and drivers.
To view system information:
· Click Start > All Programs > Accessories > System Tools > System Information.
· Click the Close button on the System Information window when you have finished
viewing system information.
Using the Backup or Restore Wizard
· The Backup or Restore Wizard helps you back up or restore files and settings on your
computer.
To use the Backup or Restore Wizard:
· Click Start > All Programs > Accessories > System Tools > Backup.
· Click Next.
· Select Back up files and settings or Restore files and settings.
· Complete the wizard steps according to the selection made.
Running the Disk Defragmenter
· The Disk Defragmenter allows your computer to save and run files more efficiently by
consolidating fragmented files and folders.
To run the Disk Defragmenter:
· Click Start > All Programs > Accessories > System Tools > Disk Defragmenter. This
opens the Disk Defragmenter window:
· Select the drive you want to defragment.
· Click the Defragment button.
Note: To analyze a drive before defragmenting it, click the Analyze button and review
the report.
Week 14
Working with System Tools
Viewing System Information
· System Information displays information for local and remote computers including
hardware configurations, computer components, software, and drivers.
To view system information:
· Click Start > All Programs > Accessories > System Tools > System Information.
· Click the Close button on the System Information window when you have finished
viewing system information.
Using Disk Cleanup
· Disk Cleanup frees up space on selected drives by displaying temporary files, Internet
files, and unnecessary program files that can be deleted.
To use Disk Cleanup:
· Click Start > All Programs > Accessories > System Tools > Disk Cleanup.
· Select the drive you want to clean from the drop-down menu.
· Click OK. This runs Disk Cleanup:
· Check the files you want to delete.
· Click OK.
· Click Yes to delete the files.
Using the Backup or Restore Wizard
· The Backup or Restore Wizard helps you back up or restore files and settings on your
computer.
To use the Backup or Restore Wizard:
· Click Start > All Programs > Accessories > System Tools > Backup.

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