1. CHAPTER 2: COMPUTER
SYSTEMS

2. At the end of the lesson, student should
be able to:
 State types of software
i) System software
ii) Application software
 Describe the differences between the system
software and application software

3. Software
 Software is a program
which consists of a set
of instructions that tells
the computer how to
perform a specific
operation.
 A computer is just a
machine with no
special benefits
without software.

5. Categories of Software
1) System Software 1) Application Software
 used to control and manage  used to help a user to
computer device and perform a task and solve a
operations problem
 Type of system software is  Examples of application
the computer’s operating software are Microsoft
system which enables the Word, Microsoft Excel,
computer to start Microsoft Excess and
Internet Explorer.

6. The differences between System
Software and Application Software
System Software Application Software
Enables the computer to Usage Enables user to work
function properly efficiently with documentation
such as letters, accounting
reports and presentation
Compulsory Need Optional
Each computer only needs one Number of Software Each computer can have more
system software than one application
Independent Dependency software
Dependent
Provides the environment in Function Provides the environment to
which the applications run enable users to accomplish
specific tasks

7. The Types of Application Software
Type of Software Examples
Proprietary Open Source
1. Word processing Microsoft Word KWord
Corel Word Perfect OpenOffice Writes
EasyWord AbiWord
Celframe Word
2. Spreadsheet Microsoft Excel KSpread
Corel Quattro Pro OpenOffice Calc
EasySpreadsheet GNumeric
Celframe Spreadsheet
3. Presentation Microsoft PowerPoint KPresenter
Corel Presentation OpenOffice Impress
EasyPresentation Agnubis
Celframe PowerPresentation
4. Graphic editor Adobe Photoshop GIMP
Adobe Illustrator InkScape
Corel Draw PhotoScape
Jasc Paint Shop Pro Paint.Net
Ulead Photoimpact CinePaint

8. Uses Of Application Software
Application Software Function
 allow users to create and manipulate
Word Processing documents containing mostly text and
sometimes graphic
Eg:
 can be used to produce documents such as
5.Microsoft Word
letters, memos, reports, cover and others
6.Corel Word Perfect
7.EasyWord  some features of word processing include:
8.Celframe Word Creating and editing document
9.KWord Defining the size of paper on which to print
10.OpenOffice Writes and specifying the margin
11.AbiWord Changing the shape and size of characters
Organizing text in newsletter-style columns
Incorporating many types of graphical
images
Inserting header and footer in a document

9. Application Software Function
 allow users to organize and manipulate data
create and manipulate
Spreadsheet
Word Processing in rows and columns mostly text and
documents containing
sometimes graphic
Eg:  it contains cell on which you can insert
 can be used to produce documents such
formulae, labels and perform automatic as
5.Microsoft Excel
Word
recalculation
letters, memos, reports, cover and others
6.Corel Quattro Pro
Word Perfect
7.EasySpreadsheet
7.EasyWord  some features of word processing include:
8.Celframe Spreadsheet
Word Creating, and editing document worksheet
Creating editing and formatting
9.KSpread
9.KWord Defining columns
in rows and the size of paper on which to print
10.OpenOffice Calc
Writes Containing formulae which can perform
and specifying the margin
11.GNumeric
11.AbiWord Changing the shape in the worksheet
calculations on the dataand size of characters
Making charts in newsletter-style columns
Organizing text
Make a querymany types of graphical
Incorporating
images
Inserting header and footer in a document

10. Application Software Function
 allow users to create visual aids for
and manipulate
Presentation
Word Processing presentations to communicate text and
documents containing mostly ideas, message
and other information to an audience
sometimes graphic
Eg:
 some features of word processing include:
can be used to produce documents such as
5.Microsoft PowerPoint
Word Providing a variety of cover and others
letters, memos, reports, predefined
6.Corel Presentation
Word Perfect presentation formats that define the
7.EasyPresentation
7.EasyWord  some features of word background, text and
complementary colors for processing include:
8.Celframe PowerPresentation
Word Creating and editing slides
graphical accents on the document
9.KPresenter
9.KWord Inserting image, video andon which to print
Defining the size of paper audio clips
10.OpenOffice Impress
Writes Setting the slide marginso that the
and specifying the timing
11.Agnubis
11.AbiWord Changing the shape and size of the next
presentation automatically displayscharacters
Organizing text delay
slide after a preset in newsletter-style columns
Providing a variety of layouts for each
Incorporating many types of graphical
individual slide such as title slide, a chart,
images
Inserting header
picture or animationand footer in a document

11. Application Software Function
 allow users to work with drawing, photo
create and manipulate
Graphics
Word Processing and pictures
documents containing mostly text and
sometimes graphic
Eg:  provide the user the ability of creating,
 can be used to produce documents
manipulating and printing graphics such as
5.Adobe Photoshop
5.Microsoft Word
letters, memos, reports, cover and others
6.Adobe Illustrator
6.Corel Word Perfect  some features of word processing include:
7.Corel Draw
7.EasyWord  some features of word processing include:
6.Drawing picture, shape and other graphical
8.Jasc Paint Word Pro
8.Celframe Shop Creating and editing document
images
9.Ulead Photoimpact
9.KWord Defining the contrast and on which to print
7.Modifyingthe size of paper brightness of an
10.GIMP
10.OpenOffice Writes image
and specifying the margin
11.InkScape
11.AbiWord Changing the shape and size
8.Cropping unwanted objects of characters
Organizing text in
9.Removing “red eye”newsletter-style columns
12.PhotoScape
Incorporating many types of graphical
10.Adding special effects such as shadows and
13.Paint.Net
glows
images
14.CinePaint Inserting header and footer in a document