SOFTWAREComputer System

Software

System Software

Operating System

Utility

Application Software

Word Processing

Spreadsheet

Presentation

Graphic Editor

System software : Software that is used to control and manage

computer devices and operations. Example :

Operating system (OS) = Windows XP, Linux, Windows 7

Utility Program = Antivirus (AVG, Karspersky)

Application software: Software that is used to help a user perform

a task and solve a problem. Example :

Word Processing (Ms Word) Graphic Software (Adobe Photoshop)

SYSTEM SOFTWARE

OPERATING SYSTEM

LinuxMac OS X

UnixWindows VistaWindows XPWindows 7

UTILITY PROGRAM

Antivirus ( Karpersky)File Manager

Diagnostic UtilityScreen SaversBackup Utility

OPERATING SYSTEM (OS)SYSTEM SOFTWARE

What is OPERATING SYSTEM (OS)?

An operating system is a program designed to run other programs on a computer. A computer’s operating system manage both software and hardware resources.

Operating systems are responsible for everything from the control and allocation of memory to recognizing input from external devices and transmitting output to computer displays. They also manage files on computer hard drives and control peripherals, like printers and scanners.

Function of OS :

1. Starting a computer (booting)2. Provide a user interface

Command line interface Menu driven interface Graphical user interface

3. Managing program4. Managing memory5. Configuring devices

User Interface We interact with software through its user

interface. User interface control how you enter data and instruction and how information is displayed on the screen.

Comman

Command Line Interface

Menu Driven Interface Graphical User Interface (GUI)

Type command or press special key on the keyboard to enter data and instructions that instruct the OS to do.

User do not need to memorize keywords such as copy, paste and syntax. On screen, menu driven interface provide menu as mean for entering command

User friendly.

GUI interact with visual image such as button and icon.

Command Line Interface

Menu Driven Interface

Graphical User Interface (GUI)

Different Interfaces of OSCommand Line

Interface(DOS)

User have to memorize all the syntax to issue

command

Difficult to use

Not user friendly

Take a long time to learn

Graphic User Interface

(Windows/ Linux)User have not to

memorize all the syntax to issues command

Easy to use

User friendly

Take a short time to learn

UTILITYSYSTEM SOFTWARE

What is Utility Program Utility Program, also known as service

programs, is a type of system software that allow user to perform maintenance-type tasks.

Usually related to manage a computer, its device or program.

Two type of Utility Program: Built in ( windows explorer, disk cleanup,

disk defragmenter) Stand-alone utility (winzip, norton utility,

karpersky)

TYPE and USAGE of utility programUtility Program

Usage Example

File Management

•Perform functions related to files and disk management•Eg : you can copy files and programs from one disk to another. You can move, rename or delete file using this utility program.

Windows Explorer

Diagnostic Utility

Diagnostic or troubleshooting utility is a utility program that compiles technical information and certain system software programs and then prepares a report outlining any identified problems

Norton Utility

TYPE and USAGE of utility program

Utility Program

Usage Example

File Compression

•A file compression software is system software that we use to shrink the size of files so they require less storage space and reduce transmission time if we send them over internet

WinZip, WinRar, PKZip

Antivirus Antivirus is a program that protects a computer against viruses by indentifying and removing any computer viruses found in a memory, storage media or incoming files

Norton Antivirus, Kaspersky, AntiVir, AVG, Nod32, Avast

TYPE and USAGE of utility program

Utility Program

Usage Example

Defragmenter

A program that reorganise files and unused space on a computer hard disk.Eliminates fragmented files. Fragmented file is a file allocated to noncontiguous clusters. As you create, edit, and delete files, more and more of them become fragmented

Norton Speed Disk, Disk Defragmenter

Disk Scanner

A utility that detect and corrects both physical and logical problems on a hard disk and searches for and remove unnecessary software

APPLICATION SOFTWARECOMPUTER SYSTEM

What is Application Software?

Software that is used to help a user perform a task and solve a problem.

Type of Application Software

Type of software

Examples

Proprietary Open Source

Word processing

Microsoft Word, Corel Word Perfect, Easy Word, Celframe Word

Kword, OpenOffice Write, AbiWord

Type of Application Software

Type of software

Examples

Proprietary Open Source

Spreadsheet

Microsoft Excel, Corel Quattro Pro, Easy Spreadsheet, Celframe Spreadsheet

Kspread, OpenOffice Calc, GNumeric

Type of Application Software

Type of software

Examples

Proprietary Open Source

Presentation

Microsoft PowerPoint, Corel Presentation, Easy Presentation, Celframe PowerPresentation

Kpresenter, OpenOffice Impress, Agnubis

Type of Application Software

Type of software

Examples

Proprietary Open Source

Graphic Editor

Adobe Photoshop, Adobe Illustrator, Corel Draw, Jasc Paint Shop Pro, Ulead Photoimpact

GIMP, Inkscape, PhotoScape, Paint.Net, CinePaint

Uses of Application SoftwareApplication Software

Function

Word Processing

e.g:

1. Microsoft Word

2. Corel Word Perfect

3. EasyWord4. Celframe

Word5. Kword6. OpenOffice

Write7. AbiWord

Word processing software allows users to create and manipulate documents containing mostly text and sometimes graphics

Word processing software can be used to produce documents such as letters, memos, reports, fax cover, sheet, mailing labels, news letters, and web pages.

Some features of word processing include:1. Creating and editing document2. Defining the size of paper on which to print

and specifying the margin3. Changing the shape and size of characters4. Organizing text in newsletter-style columns5. Incorporating many types of graphical

images6. Spelling checker7. Macro8. Drawing table9. Mail merge

Uses of Application SoftwareApplication Software

Function

Spreadsheet

e.g:

1. Microsoft Excel

2. Corel Quattro Pro

3. Easy Spreadsheet

4. Celframe Spreadsheet

5. Kspread6. OpenOffice

Calc7. GNumeric

Spreadsheet software is an application that allows users to organise and manipulate data in rows and columns. Spreadsheet software that contains cells on which you can insert formulae, labels and perform automatic recalculations.

It produces worksheets that require repetitive calculations – budgeting, maintaining a grade book, balancing account, tracking investment, calculating loan payments.

Features:1. Creating, editing, formatting worksheet2. Containing formulas3. Charts4. What-if analysis5. Make query

Uses of Application SoftwareApplication Software

Function

Presentation

e.g:

1. Microsoft PowerPoint

2. Corel Presentations

3. EasyPresentation

4. Celframe PowerPresentation

5. Kpresenter6. OpenOffice

Impress7. Agnubis

Presentation software is an application that allows users to create visual aids for presentations to communicate ideas, messages and other information to an audience.