The document discusses different types of system software, including operating systems and utility programs. It describes three types of operating systems - standalone, server, and embedded/mobile. It also lists 12 key functions of operating systems like starting and shutting down computers, managing programs and memory, and providing security. Finally, it identifies seven common types of utility programs such as file managers, disk cleanups, anti-virus software, and backup/restore utilities, and explains their basic functions.

1. Computer System
2.6 Software
2.6.1 System Software
2.6.1.1 Operating System
2.6.1.2 Utility Program
2.6.2 Application Software
1
Chapter
PDT - 2017/2018

2. Software
•
Software (also called a program), is a set of
instructions that tells the computer what tasks
to perform and how to perform them
2

3. Mapping of Software
3
Software
Utility
Program
Operating
System
Application SoftwareSystem Software

4. 4
Open Source Versus Proprietary
Open source software
(OSS)
Proprietary software
● Source code is available to
user
● Software provided for
use, modification and
redistribution
● User can install software
freely into any computer
● Source code is not
available to user
● Software cannot be
modify or redistribution
● Users must have a
license (with cost) from
vendor before install
into the computer

5. 1
Computer System
2.6.1.1 Operating System
At the end of this topic, students
should be able to:
a)Identify types of operating
system
b)Explain the functions of
operating system
Chapter
PDT - 2017/2018

6. Operating System Software
● An operating system (OS) is a set of programs
containing instructions that work together to
coordinate all the activities among computer
hardware resources
2

7. :
3
Examples of Operating System Software
Type of OS Proprietary Software Open Source Software
Stand alone Operating
System
• Windows
• Mac OS X
• Unix
• Linux
Server Operating
System
• Windows Server 2008
• Netware
• Unix
• Linux
• Solaris
Embedded / Mobile
Operating System
• Windows Embedded CE
• Windows Phone 7
• iPhone OS
• Palm OS
• BlackBerry
• Google Android
• Embedded Linux
• Symbian OS

8. :
4
Type Description
Stand alone
Operating System
A stand-alone operating system is a
complete operating system that works on
a desktop computer, notebook computer,
or mobile computing device
Server Operating
System
An operating system that is designed to
support a network
Embedded / Mobile
Operating System
An embedded operating system resides on
a ROM chip on a mobile device or
consumer electronic device
Type of Operating System Software
● 3 types of System Software

9. Function of Operating Systems
5
1. Start and shut down
computer
2. Provide a user
interface
3. Manage program
4. Manage memory 5. Coordinate tasks 6. Configure device
7. Establish an Internet
connection
8. Monitor performance 9. Provide utilities
10. Automatically
update
11. Control a network 12. Administer security

10. Functions of Operating System
1. Start and Shutdown a Computer
● The process of starting or restarting a
computer is calling booting
6
Warm boot
● Using the
operating
system to
restart a
computer
Cold boot
● Turning on a
computer that
has been
powered off
completely

11. ● A user interface controls how you enter data
and and instructions and how information is
displayed on the screen
● 2 types of user interface
I. Graphical user interface (GUI) - user interact
with the software using text, graphics, and visual images
such as icon
II.Command line interface - user uses the keyboard
to enter data and instruction
7
Functions of Operating System
2. Provide a user interface

12. Graphical User Interface (GUI)
8

13. Command-line Interface
9

14. ● How an operating system handles programs
directly affects your productivity
● An OS manages multiple programs and
processes while you use the computer
10
Functions of Operating System
3. Manage Program
➔ Single user / Single tasking - OS allows only 1 user to run 1 program at a time
➔ single user / Multitasking - OS allows a single user to work on 2 or more program at
a time
➔ Multiuser - OS enables 2 or more users to run programs simultaneously
➔ Preemptive multitasking - OS interrupts a program that is executing and pass control
to another program waiting to be executed
➔ Multiprocessing - OS supports 2 or more processors running programs at the same
time

15. ● Operating system allocates data and
instructions to memory while they are being
processed, monitors the content of memory
and release from memory when the processor
no longer required them
● Memory management optimizes the use of
RAM
11
Functions of Operating System
4. Manage Memory

16. ● The operating system determines the
order in which tasks are processed
This figure illustrate three document in the queue with one document printing 12
Functions of Operating System
5. Coordinate Task

17. 13
Functions of Operating System
6. Configure Device
● Short for device driver - a small program that tells the
OS how to communicate with a specific device
● Most device and OS support plug and play
A driver is a small program
that tells the operating
system how to
communicate with a specific
device
Eg : printer, scanner
(these devices will not function
without their correct drivers)
Plug and play automatically
configures new device as you
install them
Eg : USB Flash Drive
(devices that connect to a USB port on
the system unit typically are Plug and
Play

18. This figure illustrate to connect to a network using
windows
14
Functions of Operating System
7. Establish an Internet Connection
● OS typically provide a
means to establish
Internet connection.
● Eg : Windows automatically
configures some broadband
Internet connections as soon
as you connect to broadband
line

19. ● A performance monitor is a
program that assesses
and reports information
about various computer
resources and devices
15
Functions of Operating System
8. Monitor Performance

20. Managing
files
Searching
files
for Viewing
images
Securing a
computer
Uninstalling
programs
Cleaning
disks
up Diagnosing
problems
Defragmenting
disks
Backing up
files and
disks
Setting up
screen savers
16
Functions of Operating System
9. Provide File Managements and Other Utilities
● Operating Systems often provides users with the
capability of :

21. 17
Functions of Operating System
10. Automatically Update
● Automatic update automatically provides updates to the
program

22. ● Some operating systems are designed to work with a
server on a network
● A server Operating System organizes and
coordinates how multiple users access and share
resources on a network
● A network administrator uses the server OS to :
I. add and remove users, computers and other
devices
II. install software and administer network
security
18
Functions of Operating System
11. Control a Network

23. 19
Functions of Operating System
12. Administer Security
● Computer and network
administrators typically have
an administrator account that
enables them to access all
files and programs on the
computer or network, install
programs and specify settings
that affect all users on a
computer or network
● Each user account consist of
a username/user ID and
password

24. 1
Computer System
2.6.1.2 Utility Program
At the end of this topic, students
should be able to:
Identify types of utility programs
Explain the functions of utility
programs
Chapter
PDT - 2017/2018

25. Utility Programs
● Utility program is a type of system software
that allows a user to perform maintenance-
type task such as :
2
1.File Manager 4.Anti-Virus Program
7.Backup and
Restore
2.Disk Cleanup 5.Spyware Remover
3.Compression
Tools
6.Disk Defragmenter

26. ● To provide routine file management tasks :
➔ Displaying a list of files
➔ Organizing files in folders
➔ Copying, renaming, deleting moving, and sorting files
and folders
➔ Creating shortcuts
Proprietary Software Open Source Software
• WIndows Explorer
• Windows File Manager
• Avira Antivirus
1. File Manager
Types of Utility Programs
2

27. 3
● A disk cleanup utility searches for and removes
unnecessary files :
➔ Downloaded program files
➔ Temporary Internet files
➔ Deleted files
➔ Unused program files
Proprietary Software Open Source Software
• Microsoft Disk Cleanup • CCleaner
2. Disk Cleanup
Types of Utility Programs

28. 3. Compression Tools
● To shrinks the size of a file/s.
● A compressed files takes up less storage space than
the original file
● Compressing files frees up room on storage media
and improves system performance
Proprietary Software Open Source Software
• WinZip
• WinRAR
• 7ZIP
• PKZIP
Types of Utility Programs
4

29. ● Anti-virus program protects a computer
against viruses by identifying and removing
any computer viruses found in memory, on
storage media or incoming files
Proprietary Software Open Source Software
• Norton Antivirus
• Kapersky Antivirus
• Avira Antivirus
4. Anti-virus Program
Types of Utility Programs
5

30. ● Spyware is a program placed on a computer
without the user’s knowledge that secretly
collects information about the user
● A Spyware Remover detects and deletes
spyware
6
Proprietary Software Open Source Software
• Kapersky Internet
Security
• Spyware Doctor
• Spyware Remover
Spybot
• Spyware Blaster Nixory
5. Spyware Remover
Types of Utility Programs

31. ● Reorganizes the files and unused space on
computer hard disk so that the OS accesses
data more quickly and programs run faster
7
Proprietary Software Open Source Software
• Microsoft
Defragmenter
• MyDefrag
• Defraggler
6. Disk Defragmenter
Types of Utility Programs

32. ● A backup utility allows users to copy files to
another storage medium in case of damage or
loss
● A restore utility reverses the process and
returns backed up files to their original form
10
Proprietary Software Open Source Software
• Windows
Backup Restore
• Bacula
• Amanda
6. Backup and Restore Utility
Types of Utility Programs
8

33. Summary of Utility Programs
9
Types Function
File Manager To provide routine file management tasks
Disk Cleanup searches and removes unnecessary files
Compression Tools To shrinks the size of a file/s.
Anti-Virus Program To protects a computer against viruses by identifying and
removing any computer viruses found in memory, on storage
media or incoming files
Spyware Remover To detects and deletes spyware
Disk Defragmenter To reorganizes the files and unused space on computer hard disk
so that the OS accesses data more quickly and programs run
faster
Backup and
Restore
- A backup utility allows users to copy files to another storage
medium in case of damage or lost
- A restore utility reverses the process and returns backed up
files to their original form

34. At the end of this topic, students should be able to:
a)
b)
Identify types of application software
Explain the functions of application software
1
Computer System
2.6.2 Application Software
Chapter
PDT - 2017/2018

35. 22
Application Software
• Application software consists of programs
designed to make users more productive and / or
assist with personal tasks.
Tomake business activities more efficient
Toassist with graphics and multimedia projects
Tosupport home, personal, and educational tasks
Tofacilitate communications
2

36. 33
Examples of Application Software

37. 22
Types of Application Software
4
Types of application software
● Web browser
● Word processing
● Spreadsheet
● Database
● Presentation

38. 66
1. Web Browser Software
5
Proprietary Software Open Source Software
• Internet Explorer
• Safari
• Mozilla Firefox
• Chrome
● Web Browser allows user to access and view
Web pages or access Web 2.0 programs
Types of Application Software

39. 776
Proprietary Software Open Source Software
• Microsoft Office Word
• Pages (Apple)
• OpenOffice.org Writer
• KWord
● Word processing software allows users to
create and manipulate documents
2. Word Processing Software
Types of Application Software

40. 88
● Spreadsheet software allows users to organize data in
rows and columns and perform calculations
● Usage : spreadsheet organization, calculations and
charting
7
Proprietary Software Open Source Software
• Microsoft Office Excel
• Numbers (Apple)
• OpenOffice.org Calc
• KCells
3. Spreadsheet Software
Types of Application Software

41. 11118
Proprietary Software Open Source Software
• Microsoft Office
Access
• Oracle DB
• OpenOffice.org Base
• MariaDB
● A database is a collection of data organized in a
manner that allows access, retrieval and use of that
data.
● Database software allows users to create, access
and manage a database
● Usage : create student database, employees database
or book database.
4. Database Software
Types of Application Software

42. 1010
● Presentation software allows users to create
visual aids for presentations to communicate
ideas, messages, and other information to a
group
● Usage : create a presentation for teaching
9
Proprietary Software Open Source Software
• Microsoft Office
PowerPoint
• Keynote (Apple)
• OpenOffice.org Impress
• Showcase
5. Presentation Software
Types of Application Software

43. 22
Summary of Application Software
10
Types Description
Web browser An application software that allows user to access
and interact with software from any computer or
device that is connected to the internet
Word
processing
An application software that allows users to create
and manipulate documents
Spreadsheet An application software that allows users to organize
data in
rows and columns and perform calculations
Database An application software that allows users to create,
access and manage a database
Presentation An application software that allows users to create
visual aids for presentations to communicate ideas,
messages, and other information to a group