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Chapter 8
Operating
Systems and
Utility
Programs
Chapter 8 Objectives
Identify the types of system softwareIdentify the types of system software
Summarize the startup process
on a personal computer
Summarize the startup process
on a personal computer
Discuss ways that some operating
systems help administrators control a
network and administer security
Discuss ways that some operating
systems help administrators control a
network and administer security
Explain the purpose of the utilities
included with most operating systems
Explain the purpose of the utilities
included with most operating systems
Summarize the features of several
stand-alone operating systems
Summarize the features of several
stand-alone operating systems
Identify various network operating systemsIdentify various network operating systems
Identify devices that use several
embedded operating systems
Identify devices that use several
embedded operating systems
Explain the purpose of several
stand-alone utility programs
Explain the purpose of several
stand-alone utility programs
Next
Describe the functions of an operating systemDescribe the functions of an operating system
System Software
What is system software?
Nextp. 398
Operating system (OS)Operating system (OS)
(sometimes called the platform)(sometimes called the platform)
coordinates all activitiescoordinates all activities
among computeramong computer
hardwarehardware
resourcesresources
Programs thatPrograms that
maintain operationmaintain operation
of computerof computer
Two types areTwo types are
operating systemsoperating systems
and utility programsand utility programs
Operating Systems
What are the functions of an operating system?
Nextp. 398 - 399 Fig. 8-1
administer
security
start the
computer
manage
memory
monitor
performance
control a
network
provide a user interface manage
programs
provide file
management and
other utilities
establish an Internet
connection
schedule jobs and
configure devices
Operating Systems
What is a cross-platform application?
Nextp. 399
Operating System/
Platform A
Operating System/
Platform B
Operating System/
Platform C
Operating System/
Platform D
Application
 Runs identically on multiple operating systems
 Operating system that computer uses is sometimes
called the platform
Operating System Functions
What is booting?
Nextp. 400 Fig. 8-2
 Cold boot
Turning on
computer that has
been powered off
 Warm boot
Restarting
computer that is
powered on
 Process of starting or restarting a computer
Operating System Functions
How does a personal computer boot up?
Nextp. 400 - 401 Fig. 8-3
Step 1. Power supply
sends signal to com-
ponents in system unit
Step 4. Results of POST are
compared with data in CMOS chip
Step 2. Processor
accesses BIOS to start
computer
Step 3. BIOS runs tests,
called the POST, to
check components such
as mouse, keyboard,
and adapter cards
Step 5. BIOS looks for system files
on a USB drive, in floppy disk drive
or CD/DVD drive, and then hard
disk
Step 6. Kernel (core) of operating
system loads into RAM
Step 7. Operating system loads
configuration information and
displays desktop on screen
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
BIOS below Chapter 8
Operating System Functions
What is a recovery disk?
Nextp. 402
 Contains system files that will start computer when
computer cannot boot
 Also called boot disk
Operating System Functions
What is a user interface?
Nextp. 402 Fig. 8-4
command-line interface menu-driven interface
 Controls how you enter data and instructions and how
information displays on screen
Operating System Functions
What is a graphical user
interface (GUI)?
Nextp. 402 Fig. 8-4
 User interacts with
menus and visual
images such as icons
and buttons
 Foreground contains
program you are using
 Background contains
programs that are
running but are not
in use
Operating System Functions
What is single user/
multitasking?
Nextp. 403 - 404 Fig. 8-5
 Working on two or
more programs that
reside in memory at
same time
Has duplicate
components such as
processors, memory,
and disk drives
Enables two or
more users to
run programs
simultaneously
Continues to
operate when one
of its components
fails
Operating System Functions
What are other program management features of
operating systems?
Nextp. 405
Can support two
or more processors
running programs
at same time
fault-tolerant computerfault-tolerant computer
multiusermultiuser
multiprocessingmultiprocessing
Operating System Functions
What is memory management?
Nextp. 405 - 406 Fig. 8-7
Step 1. The
operating system
transfers the least
recently used data
and program
instructions to disk
because RAM is
needed for other
functions.
Step 2. The
operating system
transfers data and
program instructions
from hard disk to
RAM when they are
needed.
 Optimizing use of random access memory (RAM)
 With virtual memory (VM), portion of hard disk is
allocated to function as RAM
Operating System Functions
How does an operating system schedule jobs?
Nextp. 406 - 407
Transferring itemsTransferring items
between storagebetween storage
and memoryand memory
SendingSending
informationinformation
to output deviceto output device
ProcessingProcessing
instructionsinstructions
Receiving dataReceiving data
from input devicefrom input device
Adjusts schedule
based on
job’s priority
AA jobjob is operationis operation
the processor managesthe processor manages
Operating System Functions
What is spooling?
Nextp. 407 Fig. 8-8
 Sending print jobs to buffer instead of
directly to printer
 Print jobs line up in queue
Operating System Functions
What is a device driver?
Nextp. 407
DeviceDevice
DriverDriver
Program thatProgram that
tells operating systemtells operating system
how to communicatehow to communicate
with devicewith device
WithWith Plug and PlayPlug and Play,,
operating systemoperating system
automatically configuresautomatically configures
new devices as younew devices as you
install theminstall themAlso calledAlso called driverdriver
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
Plug and Play below Chapter 8
Operating System Functions
How do you install a device driver?
Nextp. 408 Fig. 8-9
Step 1. Open Control
Panel window. Point to
Printers and Other
Hardware link.
Step 2. Click Printers and
Other Hardware link. Point
to Add a printer link.
Step 3. Click Add a
printer link. Follow
on-screen instructions.
Step 4. Add Printer
Wizard searches for
Plug and Play printers
on your computer. If it
finds any such
printers, it installs
them.
Step 5. If Add Printer Wizard cannot find any Plug and
Play printers, you can select type of printer you want to
install. An on-screen prompt may ask you to insert floppy
disk, CD-ROM or DVD-ROM that contains necessary
driver files to complete the installation of printer.
Operating System Functions
How do you establish an Internet connection?
Nextp. 409 Fig. 8-10
 Windows XP includes
New Connection Wizard
 Guides user through setting
up connection between
computer and Internet
Operating System Functions
How does an operating system monitor performance?
Nextp. 409 Fig. 8-11
 Provides program, called performance monitor,
that assesses and reports information about
system resources
and devices
Operating System Functions
What is a network operating system?
Nextp. 410 Fig. 8-12
 Allows users to share printer, Internet
access, files, and programs on a network
 Administers security
by establishing user
name and password for
each user
Operating System Utility Programs
What is a utility program?
Nextp. 411 Fig. 8-13
 System software that performs
maintenance-type tasks
 Also called
utility
Operating System Utility Programs
What is a file manager?
Nextp. 412 Figs. 8-14–8-15
 Performs functions such as copying, renaming,
deleting, and moving files
 Image viewer
displays contents
of graphics file
when you double
click on it
Operating System Utility Programs
What is a personal firewall?
Nextp. 413 Figs. 8-16
 Detects and protects a personal computer from
unauthorized intrusions
 The latest update
to Windows XP
automatically
enables the built-
in personal
firewall upon
installation
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
Personal Firewalls below
Chapter 8
Operating System Utility Programs
What is an uninstaller?
Nextp. 413
In Windows XP,In Windows XP,
uninstaller is in Add/Removeuninstaller is in Add/Remove
Programs in Control PanelPrograms in Control Panel
Removes aRemoves a
program andprogram and
all associated filesall associated files
Operating System Utility Programs
What is a disk scanner?
Nextp. 414 Fig. 8-17
 Detects and corrects
problems on hard disk
 Searches for and removes
unnecessary files
Operating System Utility Programs
What is a disk defragmenter?
Nextp. 414 Fig. 8-18
 Reorganizes files and unused space on hard
disk so programs run faster
fragmented disk
disk after
defragmentation
process
Operating System Utility Programs
What is a diagnostic utility?
Nextp. 414 Fig. 8-19
 Compiles technical information
about hardware and some
software
 Prepares report outlining
problems
Video: How to Tell When Your Hard
Drive’s About to Die
Protect your hard drive and prevent devastating data loss
low quality
(click to start)
high quality
(click to start)
Next
Operating System Utility Programs
What is a backup utility?
Nextp. 415 Fig. 8-20
 Copies selected files or entire hard disk onto
another storage medium
 Most compress files
during backup to
require less storage
space
Operating System Utility Programs
What is a screen saver?
Nextp. 415 Fig. 8-21
 Causes monitor’s screen to display moving
image or blank screen if there is no activity
for a specified time
 To secure computer,
user configures screen
saver to require
password to
deactivate
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
Screen Savers below Chapter 8
Device-
dependent
Runs only on specific
type of computer
Types of Operating Systems
What are some characteristics of operating systems?
Nextp. 415 - 416
Downward
compatible
Works with application
software written for
earlier version of
operating system
Upward
compatible
Runs on new versions of
operating system
Proprietary
software
Privately owned and
limited to specific vendor
or computer model
Device-
independent
Runs on many
manufacturers’
computers
Stand-aloneStand-alone
Types of Operating Systems
What are three categories of operating systems?
Nextp. 416
EmbeddedEmbedded NetworkNetwork
Stand-Alone Operating Systems
What is DOS (Disk Operating System)?
Nextp. 417
DD
Developed inDeveloped in
early 1980searly 1980s
for personalfor personal
computerscomputers
OO
Used command-lineUsed command-line
interface when firstinterface when first
developed, laterdeveloped, later
included menusincluded menusSSHardly used todayHardly used today
because it doesbecause it does
not offer GUInot offer GUI
Stand-Alone Operating Systems
How do Windows
versions compare?
Nextp. 417 Fig. 8-23
Windows Version Year Released
Windows 3.x 1990
Windows NT 3.1 1993
Windows 95 1995
Windows NT Workstation 4.0 1996
Windows 98 1998
Windows Millennium Edition 2000
Windows 2000 Professional 2000
Windows XP 2001
Windows XP SP2 2004
Windows Vista 2006
 Fast, reliable Windows operating system
Stand-Alone Operating Systems
What is Windows XP?
Nextp. 417 Fig. 8-24
 Available in five
editions:
Home Edition,
Professional Edition,
Tablet PC Edition,
Media Center Edition,
and 64-bit Edition
 Successor to Windows XP, containing a new
interface and new / enhanced features
Stand-Alone Operating Systems
What is Windows Vista?
Nextp. 419 Fig. 8-26
 Available in several
editions, grouped into
Home and Business
categories
Click to view Web Link,
click Chapter 8, Click Web Link
from left navigation,
then click Windows Vista
below Chapter 8
Windows Vista Features
Reliability and Performance
Security
Information Management
Appearance and Navigation
Communications and the Internet
Stand-Alone Operating Systems
What are some features of Windows Vista?
Nextp. 419
Stand-Alone Operating Systems
What is Mac OS X?
Nextp. 420 Fig. 8-28
 Available only for computers manufactured
by Apple
 Macintosh operating
system has been
model for most GUIs
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
Mac OS X below Chapter 8
Stand-Alone Operating Systems
What is UNIX?
Nextp. 420 Fig. 8-29
 Used by power users because of its flexibility
and power
 Most versions
offer GUI
 Available for
computers of all
sizes
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
UNIX below Chapter 8
Stand-Alone Operating Systems
What is Linux?
Nextp. 421 Fig. 8-30
Red Hat provides a version of Linux called Red Hat
Enterprise Linux.
 Popular, free, multitasking UNIX-type
operating system
 Open-source softwaree—
code is available to
public
 Both a stand-alone
and a network
operating system
Network Operating Systems
What are examples of network
operating systems?
Nextp. 422 - 423
NetWareNetWare
Designed forDesigned for
client/serverclient/server
networksnetworks
WindowsWindows
Server 2003Server 2003
Upgrade to WindowsUpgrade to Windows
2000 Server2000 Server
UNIX / LinuxUNIX / Linux
Multi-purposeMulti-purpose
operating systemoperating system
SolarisSolaris
 Version of UNIXVersion of UNIX
developed by Sundeveloped by Sun
MicrosystemsMicrosystems
 Specifically forSpecifically for
e-commercee-commerce
applicationsapplications
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
Solaris below Chapter 8
Embedded Operating Systems
What is an embedded operating system?
Nextp. 423 Fig. 8-31
 Found on most mobile
computers, PDAs, and other
small devices
 Windows CE is
scaled-down version of
Windows
Embedded Operating Systems
What are two operating systems for smart phones?
Nextp. 423 - 424 Figs. 8-32 - 8-33
 Windows Mobile , Android
 Palm OS for Palm
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
Windows Mobile
below Chapter 8
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
Palm OS below Chapter 8
Embedded Operating Systems
What is Embedded Linux?
Nextp. 425 Fig. 8-34
 Scaled-down Linux operating system
designed for PDAs, smart phones,
smart watches, set-top boxes,
Internet telephones, and other
devices
 Offers many PIM functions
Embedded Operating Systems
What is Symbian OS?
Nextp. 425 Fig. 8-35
 Open-source, multitasking operating system
designed for smart phones
 Make telephone calls,
save appointments,
browse Web, send
and receive e-mail
and faxes, and more
Stand-Alone Utility Programs
What is a virus?
Nextp. 425 Fig. 8-36
 Potentially damaging computer program
 Affects computer without user’s knowledge
SIGNS OFSIGNS OF
VIRUSVIRUS
INFECTIONINFECTION
• An unusual message or image is displayed on the
computer screen
• An unusual sound or music plays randomly
• The available memory is less than what should be
available
• A program or file suddenly is missing
• An unknown program or file mysteriously appears
• The size of a file changes without explanation
• A file becomes corrupted
• A program or file does not work properly
• System properties change
Stand-Alone Utility Programs
What is an antivirus program?
Nextp. 425 - 426 Fig. 8-37
 Identifies and removes viruses in memory, storage
media, and incoming files
 Must be updated frequently
Stand-Alone Utility Programs
What is spyware?
Nextp. 426
 Program placed on a computer without the user’s
knowledge that secretly collects information about the
user
 Often enters a computer as a result of a user installing
a new program
 A spyware remover is a program that detects and
deletes spyware
Pop-up
Blockers
Stand-Alone Utility Programs
What are internet filters?
Nextp. 426 - 427
 Programs that remove or block certain items from
being displayed
Anti-Spam
Programs
Web
Filters
Stand-Alone Utility Programs
What is a file compression utility?
Nextp. 427 Fig. 8-38
 Shrinks size of files to free up room
and improve performance
 Compressed files are sometimes called
zipped files
 Two popular utilities:
PKZIP and WinZip
Click to view Web
Link, click Chapter 8, Click
Web Link from left
navigation, then click
File Compression Utilities
below Chapter 8
Stand-Alone Utility Programs
What is CD/DVD burning software?
Nextp. 428 Fig. 8-39
 Writes text, graphics,
audio, and video files to
a recordable or
rewriteable CD or DVD
Stand-Alone Utility Programs
What is a personal computer maintenance utility?
Nextp. 428 Fig. 8-40
 Identifies and fixes operating system problems and
disk problems
 Some continuously
monitor computer to
identify problems
before they occur
Summary of Operating Systems and Utility
Programs
Chapter 8 Complete
Define an operating systemDefine an operating system
Discuss the functions common to
most operating systems
Discuss the functions common to
most operating systems
Introduce several utility programs commonly
found in operating systems
Introduce several utility programs commonly
found in operating systems
Discuss a variety of stand-alone
operating systems, network operating systems,
and embedded operating systems
Discuss a variety of stand-alone
operating systems, network operating systems,
and embedded operating systems
Describe several stand-alone
utility programs
Describe several stand-alone
utility programs

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Operating System & Utility Programme

  • 2. Chapter 8 Objectives Identify the types of system softwareIdentify the types of system software Summarize the startup process on a personal computer Summarize the startup process on a personal computer Discuss ways that some operating systems help administrators control a network and administer security Discuss ways that some operating systems help administrators control a network and administer security Explain the purpose of the utilities included with most operating systems Explain the purpose of the utilities included with most operating systems Summarize the features of several stand-alone operating systems Summarize the features of several stand-alone operating systems Identify various network operating systemsIdentify various network operating systems Identify devices that use several embedded operating systems Identify devices that use several embedded operating systems Explain the purpose of several stand-alone utility programs Explain the purpose of several stand-alone utility programs Next Describe the functions of an operating systemDescribe the functions of an operating system
  • 3. System Software What is system software? Nextp. 398 Operating system (OS)Operating system (OS) (sometimes called the platform)(sometimes called the platform) coordinates all activitiescoordinates all activities among computeramong computer hardwarehardware resourcesresources Programs thatPrograms that maintain operationmaintain operation of computerof computer Two types areTwo types are operating systemsoperating systems and utility programsand utility programs
  • 4. Operating Systems What are the functions of an operating system? Nextp. 398 - 399 Fig. 8-1 administer security start the computer manage memory monitor performance control a network provide a user interface manage programs provide file management and other utilities establish an Internet connection schedule jobs and configure devices
  • 5. Operating Systems What is a cross-platform application? Nextp. 399 Operating System/ Platform A Operating System/ Platform B Operating System/ Platform C Operating System/ Platform D Application  Runs identically on multiple operating systems  Operating system that computer uses is sometimes called the platform
  • 6. Operating System Functions What is booting? Nextp. 400 Fig. 8-2  Cold boot Turning on computer that has been powered off  Warm boot Restarting computer that is powered on  Process of starting or restarting a computer
  • 7. Operating System Functions How does a personal computer boot up? Nextp. 400 - 401 Fig. 8-3 Step 1. Power supply sends signal to com- ponents in system unit Step 4. Results of POST are compared with data in CMOS chip Step 2. Processor accesses BIOS to start computer Step 3. BIOS runs tests, called the POST, to check components such as mouse, keyboard, and adapter cards Step 5. BIOS looks for system files on a USB drive, in floppy disk drive or CD/DVD drive, and then hard disk Step 6. Kernel (core) of operating system loads into RAM Step 7. Operating system loads configuration information and displays desktop on screen Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click BIOS below Chapter 8
  • 8. Operating System Functions What is a recovery disk? Nextp. 402  Contains system files that will start computer when computer cannot boot  Also called boot disk
  • 9. Operating System Functions What is a user interface? Nextp. 402 Fig. 8-4 command-line interface menu-driven interface  Controls how you enter data and instructions and how information displays on screen
  • 10. Operating System Functions What is a graphical user interface (GUI)? Nextp. 402 Fig. 8-4  User interacts with menus and visual images such as icons and buttons
  • 11.  Foreground contains program you are using  Background contains programs that are running but are not in use Operating System Functions What is single user/ multitasking? Nextp. 403 - 404 Fig. 8-5  Working on two or more programs that reside in memory at same time
  • 12. Has duplicate components such as processors, memory, and disk drives Enables two or more users to run programs simultaneously Continues to operate when one of its components fails Operating System Functions What are other program management features of operating systems? Nextp. 405 Can support two or more processors running programs at same time fault-tolerant computerfault-tolerant computer multiusermultiuser multiprocessingmultiprocessing
  • 13. Operating System Functions What is memory management? Nextp. 405 - 406 Fig. 8-7 Step 1. The operating system transfers the least recently used data and program instructions to disk because RAM is needed for other functions. Step 2. The operating system transfers data and program instructions from hard disk to RAM when they are needed.  Optimizing use of random access memory (RAM)  With virtual memory (VM), portion of hard disk is allocated to function as RAM
  • 14. Operating System Functions How does an operating system schedule jobs? Nextp. 406 - 407 Transferring itemsTransferring items between storagebetween storage and memoryand memory SendingSending informationinformation to output deviceto output device ProcessingProcessing instructionsinstructions Receiving dataReceiving data from input devicefrom input device Adjusts schedule based on job’s priority AA jobjob is operationis operation the processor managesthe processor manages
  • 15. Operating System Functions What is spooling? Nextp. 407 Fig. 8-8  Sending print jobs to buffer instead of directly to printer  Print jobs line up in queue
  • 16. Operating System Functions What is a device driver? Nextp. 407 DeviceDevice DriverDriver Program thatProgram that tells operating systemtells operating system how to communicatehow to communicate with devicewith device WithWith Plug and PlayPlug and Play,, operating systemoperating system automatically configuresautomatically configures new devices as younew devices as you install theminstall themAlso calledAlso called driverdriver Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click Plug and Play below Chapter 8
  • 17. Operating System Functions How do you install a device driver? Nextp. 408 Fig. 8-9 Step 1. Open Control Panel window. Point to Printers and Other Hardware link. Step 2. Click Printers and Other Hardware link. Point to Add a printer link. Step 3. Click Add a printer link. Follow on-screen instructions. Step 4. Add Printer Wizard searches for Plug and Play printers on your computer. If it finds any such printers, it installs them. Step 5. If Add Printer Wizard cannot find any Plug and Play printers, you can select type of printer you want to install. An on-screen prompt may ask you to insert floppy disk, CD-ROM or DVD-ROM that contains necessary driver files to complete the installation of printer.
  • 18. Operating System Functions How do you establish an Internet connection? Nextp. 409 Fig. 8-10  Windows XP includes New Connection Wizard  Guides user through setting up connection between computer and Internet
  • 19. Operating System Functions How does an operating system monitor performance? Nextp. 409 Fig. 8-11  Provides program, called performance monitor, that assesses and reports information about system resources and devices
  • 20. Operating System Functions What is a network operating system? Nextp. 410 Fig. 8-12  Allows users to share printer, Internet access, files, and programs on a network  Administers security by establishing user name and password for each user
  • 21. Operating System Utility Programs What is a utility program? Nextp. 411 Fig. 8-13  System software that performs maintenance-type tasks  Also called utility
  • 22. Operating System Utility Programs What is a file manager? Nextp. 412 Figs. 8-14–8-15  Performs functions such as copying, renaming, deleting, and moving files  Image viewer displays contents of graphics file when you double click on it
  • 23. Operating System Utility Programs What is a personal firewall? Nextp. 413 Figs. 8-16  Detects and protects a personal computer from unauthorized intrusions  The latest update to Windows XP automatically enables the built- in personal firewall upon installation Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click Personal Firewalls below Chapter 8
  • 24. Operating System Utility Programs What is an uninstaller? Nextp. 413 In Windows XP,In Windows XP, uninstaller is in Add/Removeuninstaller is in Add/Remove Programs in Control PanelPrograms in Control Panel Removes aRemoves a program andprogram and all associated filesall associated files
  • 25. Operating System Utility Programs What is a disk scanner? Nextp. 414 Fig. 8-17  Detects and corrects problems on hard disk  Searches for and removes unnecessary files
  • 26. Operating System Utility Programs What is a disk defragmenter? Nextp. 414 Fig. 8-18  Reorganizes files and unused space on hard disk so programs run faster fragmented disk disk after defragmentation process
  • 27. Operating System Utility Programs What is a diagnostic utility? Nextp. 414 Fig. 8-19  Compiles technical information about hardware and some software  Prepares report outlining problems
  • 28. Video: How to Tell When Your Hard Drive’s About to Die Protect your hard drive and prevent devastating data loss low quality (click to start) high quality (click to start) Next
  • 29. Operating System Utility Programs What is a backup utility? Nextp. 415 Fig. 8-20  Copies selected files or entire hard disk onto another storage medium  Most compress files during backup to require less storage space
  • 30. Operating System Utility Programs What is a screen saver? Nextp. 415 Fig. 8-21  Causes monitor’s screen to display moving image or blank screen if there is no activity for a specified time  To secure computer, user configures screen saver to require password to deactivate Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click Screen Savers below Chapter 8
  • 31. Device- dependent Runs only on specific type of computer Types of Operating Systems What are some characteristics of operating systems? Nextp. 415 - 416 Downward compatible Works with application software written for earlier version of operating system Upward compatible Runs on new versions of operating system Proprietary software Privately owned and limited to specific vendor or computer model Device- independent Runs on many manufacturers’ computers
  • 32. Stand-aloneStand-alone Types of Operating Systems What are three categories of operating systems? Nextp. 416 EmbeddedEmbedded NetworkNetwork
  • 33. Stand-Alone Operating Systems What is DOS (Disk Operating System)? Nextp. 417 DD Developed inDeveloped in early 1980searly 1980s for personalfor personal computerscomputers OO Used command-lineUsed command-line interface when firstinterface when first developed, laterdeveloped, later included menusincluded menusSSHardly used todayHardly used today because it doesbecause it does not offer GUInot offer GUI
  • 34. Stand-Alone Operating Systems How do Windows versions compare? Nextp. 417 Fig. 8-23 Windows Version Year Released Windows 3.x 1990 Windows NT 3.1 1993 Windows 95 1995 Windows NT Workstation 4.0 1996 Windows 98 1998 Windows Millennium Edition 2000 Windows 2000 Professional 2000 Windows XP 2001 Windows XP SP2 2004 Windows Vista 2006
  • 35.  Fast, reliable Windows operating system Stand-Alone Operating Systems What is Windows XP? Nextp. 417 Fig. 8-24  Available in five editions: Home Edition, Professional Edition, Tablet PC Edition, Media Center Edition, and 64-bit Edition
  • 36.  Successor to Windows XP, containing a new interface and new / enhanced features Stand-Alone Operating Systems What is Windows Vista? Nextp. 419 Fig. 8-26  Available in several editions, grouped into Home and Business categories Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click Windows Vista below Chapter 8
  • 37. Windows Vista Features Reliability and Performance Security Information Management Appearance and Navigation Communications and the Internet Stand-Alone Operating Systems What are some features of Windows Vista? Nextp. 419
  • 38. Stand-Alone Operating Systems What is Mac OS X? Nextp. 420 Fig. 8-28  Available only for computers manufactured by Apple  Macintosh operating system has been model for most GUIs Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click Mac OS X below Chapter 8
  • 39. Stand-Alone Operating Systems What is UNIX? Nextp. 420 Fig. 8-29  Used by power users because of its flexibility and power  Most versions offer GUI  Available for computers of all sizes Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click UNIX below Chapter 8
  • 40. Stand-Alone Operating Systems What is Linux? Nextp. 421 Fig. 8-30 Red Hat provides a version of Linux called Red Hat Enterprise Linux.  Popular, free, multitasking UNIX-type operating system  Open-source softwaree— code is available to public  Both a stand-alone and a network operating system
  • 41. Network Operating Systems What are examples of network operating systems? Nextp. 422 - 423 NetWareNetWare Designed forDesigned for client/serverclient/server networksnetworks WindowsWindows Server 2003Server 2003 Upgrade to WindowsUpgrade to Windows 2000 Server2000 Server UNIX / LinuxUNIX / Linux Multi-purposeMulti-purpose operating systemoperating system SolarisSolaris  Version of UNIXVersion of UNIX developed by Sundeveloped by Sun MicrosystemsMicrosystems  Specifically forSpecifically for e-commercee-commerce applicationsapplications Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click Solaris below Chapter 8
  • 42. Embedded Operating Systems What is an embedded operating system? Nextp. 423 Fig. 8-31  Found on most mobile computers, PDAs, and other small devices  Windows CE is scaled-down version of Windows
  • 43. Embedded Operating Systems What are two operating systems for smart phones? Nextp. 423 - 424 Figs. 8-32 - 8-33  Windows Mobile , Android  Palm OS for Palm Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click Windows Mobile below Chapter 8 Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click Palm OS below Chapter 8
  • 44. Embedded Operating Systems What is Embedded Linux? Nextp. 425 Fig. 8-34  Scaled-down Linux operating system designed for PDAs, smart phones, smart watches, set-top boxes, Internet telephones, and other devices  Offers many PIM functions
  • 45. Embedded Operating Systems What is Symbian OS? Nextp. 425 Fig. 8-35  Open-source, multitasking operating system designed for smart phones  Make telephone calls, save appointments, browse Web, send and receive e-mail and faxes, and more
  • 46. Stand-Alone Utility Programs What is a virus? Nextp. 425 Fig. 8-36  Potentially damaging computer program  Affects computer without user’s knowledge SIGNS OFSIGNS OF VIRUSVIRUS INFECTIONINFECTION • An unusual message or image is displayed on the computer screen • An unusual sound or music plays randomly • The available memory is less than what should be available • A program or file suddenly is missing • An unknown program or file mysteriously appears • The size of a file changes without explanation • A file becomes corrupted • A program or file does not work properly • System properties change
  • 47. Stand-Alone Utility Programs What is an antivirus program? Nextp. 425 - 426 Fig. 8-37  Identifies and removes viruses in memory, storage media, and incoming files  Must be updated frequently
  • 48. Stand-Alone Utility Programs What is spyware? Nextp. 426  Program placed on a computer without the user’s knowledge that secretly collects information about the user  Often enters a computer as a result of a user installing a new program  A spyware remover is a program that detects and deletes spyware
  • 49. Pop-up Blockers Stand-Alone Utility Programs What are internet filters? Nextp. 426 - 427  Programs that remove or block certain items from being displayed Anti-Spam Programs Web Filters
  • 50. Stand-Alone Utility Programs What is a file compression utility? Nextp. 427 Fig. 8-38  Shrinks size of files to free up room and improve performance  Compressed files are sometimes called zipped files  Two popular utilities: PKZIP and WinZip Click to view Web Link, click Chapter 8, Click Web Link from left navigation, then click File Compression Utilities below Chapter 8
  • 51. Stand-Alone Utility Programs What is CD/DVD burning software? Nextp. 428 Fig. 8-39  Writes text, graphics, audio, and video files to a recordable or rewriteable CD or DVD
  • 52. Stand-Alone Utility Programs What is a personal computer maintenance utility? Nextp. 428 Fig. 8-40  Identifies and fixes operating system problems and disk problems  Some continuously monitor computer to identify problems before they occur
  • 53. Summary of Operating Systems and Utility Programs Chapter 8 Complete Define an operating systemDefine an operating system Discuss the functions common to most operating systems Discuss the functions common to most operating systems Introduce several utility programs commonly found in operating systems Introduce several utility programs commonly found in operating systems Discuss a variety of stand-alone operating systems, network operating systems, and embedded operating systems Discuss a variety of stand-alone operating systems, network operating systems, and embedded operating systems Describe several stand-alone utility programs Describe several stand-alone utility programs