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Technology In Action. Technology In Action. Chapter 5 Using System Software: The Operating System, Utility Programs, and File Management. Topics. System software Operating systems: Kinds of systems Common desktop systems User interaction Manage the processor Manage memory. Topics.

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technology in action1
Technology In Action

Chapter 5

Using System Software:

The Operating System, Utility Programs, and File Management

topics
Topics
  • System software
  • Operating systems:
    • Kinds of systems
    • Common desktop systems
    • User interaction
    • Manage the processor
    • Manage memory
topics1
Topics
  • Operating systems:
    • Manage hardware
    • Interact with application software
    • Start the computer
    • Keep the computer organized
  • Desktop and windows features
  • Utility programs
system software
Operating systems

Control computer functions:

Hardware

Memory

Application programs

System maintenance

Provide user interface

System utilities

Programs that perform computer housekeeping tasks:

Manage system resources

Improve efficiency

Virus prevention

System Software
system software1
System Software
  • The set of software programs that helps run the computer and coordinates instructions between application software and the computer’s hardware devices
system software2
System Software
  • Consists of two primary types of programs
    • Operating system (OS)
      • The main program that controls how your computer system functions
      • The OS manages the computer’s hardware, the processor (CPU), memory, storage devices, and peripheral devices
      • Provide a consistent means for software applications to work with the CPU
system software3
System Software
  • Consists of two primary types of programs
    • Operating system (OS)
      • Responsible the management , scheduling, and interaction of tasks as well as system maintenance
system software4
System Software
  • Consists of two primary types of programs
    • Utility Programs
      • Small programs that perform many of the general housekeeping tasks for the computer, such as system maintenance and file compression
operating system categories
Operating System Categories
  • Every computer has an operating system
  • The computer cannot operate without it
  • Four categories:
    • Real-Time (RTOS)
    • Single-User, Single-Task
    • Single-User, Multitask
    • Multiuser
real time operating systems
Real-Time Operating Systems
  • Machinery that is required to perform series of specific tasks in an exact amount of time require a RTOS
  • Systems with a specific purpose and a certain result
real time operating systems1
Real-Time Operating Systems
  • An OS with a specific purpose and guarantees certain response times for particular computing tasks
  • Uses include:
    • Industrial machines
    • Robotic equipment
    • Automobiles
    • Video game consoles
    • Home appliances
single user operating systems
Single-task systems

Perform one task at a time

PDAs:

Pocket PC

Palm OS

Windows Mobile

MS-DOS

Multitask systems

Perform simultaneous tasks

Windows

MAC OS

Linux

Single-User Operating Systems
multiuser operating systems
Multiuser Operating Systems
  • Known as network operating systems
  • Allow access to the computer system by more than one user
  • Manage user requests
  • Systems include:
    • UNIX
    • Novell Netware
    • Windows Server 2003
desktop operating systems
Desktop Operating Systems
  • Operating system combined with the processor is known as a platform
    • Microsoft Windows / Intel
    • Apple Macintosh / Motorola
  • Desktop operating systems include:
    • Microsoft Windows
    • MAC OS
    • UNIX
    • Linux
microsoft windows

Introduces point-and-click commands with a mouse and includes modest

multitasking capabilities and desktop applications.

First widely used PC graphical user interface (GUI) operating system. Improved

point-and-click mouse operations and multitasking capabilities.

Fundamentally different operating system with increased security, power,

performance, and multitasking scheduler.

This upgrade to Windows 95 and Windows 98 includes system backup and

multimedia capabilities (such as Media Player).

This operating system runs faster

and more efficiently, introduces Plug and Play capabilities, long file names, short-cut

right-click menus, and a cleaner desktop.

Includes better graphics capabilities and introduces keyboard shortcuts and

the ability to overlap windows.

This upgrade to Windows NT offers improvements to file security and Internet support.

This upgrade includes additional file protection and incorporates

Internet Explorer 4.0, a customizable taskbar, and desktop features

Offers a new multi-user desktop as well as improved digital media features and

Internet capabilities.

Windows 2000 (2000)

Windows ME (2000)

Windows XP (2001)

Windows 98 (1998)

Windows 95 (1995)

Windows NT (1993)

Windows 3.x (1990-1992)

Windows 1.0 (1985)

Windows 2.0 (1987)

Microsoft Windows
  • Market leader – 90% market share

Click to view the various Windows systems

windows vista
Windows Vista
  • New OS to be introduced in 2007
mac os
MAC OS
  • First operating system with point-and-click technology (Graphical User Interface)
  • Excellent in:
    • Graphics display
    • Processing capabilities
    • System reliability
    • Document recovery
  • Fewer software applications

MAC OS X

slide19
UNIX
  • Multiuser, multitask operating system
  • Used primarily with mainframes as a Network OperatingSystem
  • Also used on PCs
slide20
UNIX
  • Originally conceived in 1969 at Bell Labs
  • Individual vendors modify the UNIX code to run specifically on their hardware
linux
Linux
  • Open-source operating system that is freely available for developers to use or modify as they wish
  • Based on UNIX
  • Stable system that is not subject to crashesand failures
  • Free
  • May be downloaded through the Internet
what the operating system does
What the Operating System Does
  • Provides a way for the user to interact with the computer
  • Manages the CPU
  • Manages memory andstorage
  • Manages the system’shardware and peripheral devices
  • Coordinates application software with the CPU
the user interface
The User Interface
  • Enables you to interact with the computer
  • Types of interfaces:
    • Command-driven interface
    • Menu-driven interface
    • Graphical user interface

Command-driven

Menu-driven

Graphical

the user interface1
The User Interface
  • Command-driven Interface
    • The user had to type very specific commands to get the computer to perform a function
  • Menu-driven Interface
    • You choose a command from menus displayed on the screen
    • Eliminated the need to know every command
the user interface2
The User Interface
  • Graphical User Interface (GUI)
    • GUIs display graphics and use the point-and-click technology of the mouse and cursor, making them much more user-friendly
    • GUIs use
      • Windows – rectangular boxes that contain programs displayed on the screen
      • Menus- lists of commands that appear on the screen
      • Icons – pictures that represent an object such as a software application or a file or folder
the user interface3
The User Interface
  • Graphical User Interface
    • Unlike Windows or MAC OS, Linux does not have a single, default GUI interface
    • Users are free to choose among many commercially available or free interfaces
processor management
Processor Management
  • When you use your computer, you are usually asking it to perform several tasks at once
    • Printing a document
    • Waiting for a file to download from the Internet
    • Listening to a CD from your CD drive
    • Working on a Powerpoint presentationall at the same time or what appears to be the same time

Operating System

Process 3rd

Process 1st

Process 4th

Process 2nd

REQUEST

processor management1
Processor Management
  • The Processor needs the operating system to arrange for the execution of all these activities in a systematic way to give the appearance that everything is happening simultaneously

Operating System

Process 3rd

Process 1st

Process 4th

Process 2nd

REQUEST

processor management2
Processor Management
  • To do so, the operating system assigns a slice of its time to each activity requiring the processor’s attention
  • The OS must then switch between different processes thousands of times a second to make it appear that everything is happening seamlessly
    • Multitasking

Process 3rd

Process 1st

Process 4th

Process 2nd

processor management3
Processor Management
  • When you tell your computer to print a document, the printer generates a unique signal (interrupt) to inform the operating system.
  • Every device has its own unique interrupt which is associated with an interrupt handler
    • A special numerical code that prioritizes the requests

Process 3rd

Process 1st

Process 4th

Process 2nd

processor management4
Processor Management
  • These requests are placed in the Interrupt Table in the computer’s primary memory (RAM)
  • The OS processes the task assigned a higher priority before processing a task with a lower priority
    • Preemptive multitasking

Process 3rd

Process 1st

Process 4th

Process 2nd

processor management5
Processor Management
  • In our example
    • When the OS receives the interrupt from the printer, it pauses the CPU from its typing activity and from the CD activity and puts a “memo” in a special location in RAM
      • Stack
    • The memo is a reminder of where the CPU was before it left off so that it can work on the printer request

Process 3rd

Process 1st

Process 4th

Process 2nd

processor management6
Processor Management
  • In our example
    • The CPU then retrieves the printer request from the Interrupt Table and begins to process it
    • On completion of the printer request, the CPU goes back to the stack, retrieves the memo and returns to that activity until it is interrupted again

Process 3rd

Process 1st

Process 4th

Process 2nd

memory management
Memory Management
  • The operating system allocates space in RAM for instructions and data

RAM

Operating System

memory management1
Memory Management
  • The OS is responsible for coordinating the space allocations in RAM to ensure that there is enough space for all the waiting instructions and data
  • It then clears the items from RAM when the processor no longer needs them
  • When there isn’t enough room in RAM for the OS to store the required data and instructions, the OS borrows room from the hard drive
virtual memory
Virtual Memory
  • The process of optimizing RAM storage by borrowing hard drive space

FULL

Operating System

virtual memory1
Virtual Memory
  • When more RAM is needed The OS is responsible for coordinating , the OS swaps out from RAM the data or instructions that have not been recently used and moves them to a temporary storage area on the hard drive
    • Swap File
virtual memory2
Virtual Memory
  • If the data or instructions in the Swap File are needed later, the OS swaps them back into active RAM and replaces them in the hard drive’s Swap File with less active data or instructions
    • Paging
virtual memory3
Virtual Memory
  • As your data and instructions get bigger and bigger, the more space you will need on your hard drive
  • Eventually your computer will become sluggish and slower as it is forced to page more and more often
    • Thrashing
virtual memory4
Virtual Memory
  • The solution to thrashing is to increase the amount of RAM in your system so that it will not be necessary for it to send data and instructions to virtual memory
hardware management
Hardware Management
  • Each device attached to your computer comes with a special program
    • Device Driver
      • Facilitates the communication between the hardware device and the OS
      • Translates the specialized commands of the device to commands that the OS can understand, and vice versa
    • Devices will not function without the proper device drive because the OS would not know how to communicate with them
hardware management1
Hardware Management
  • Today most devices come with the driver already installed in Windows
    • Plug and Play
      • A software and hardware standard that Microsoft created with Windows 95
      • Designed to facilitate the installation of a new piece of hardware in PCs by including the driver the device needs to run into the OS
      • Because the OS includes this software, incorporating a new device seems automatic
hardware management2
Hardware Management
  • When you install a non-Plug and Play device, you will be prompted to insert the media that was provided with the device for the OS to obtain the driver
hardware management3
Hardware Management
  • Device drivers:
    • Programs that enable the operating system to communicate with peripheral devices
    • Provided by the manufacturer of the device
  • Plug and Play:
    • Hardware and software standard
    • Facilitates the installation of new hardware
software application coordination
Software Application Coordination
  • Software applications feed the CPU the instructions it needs to process data
    • Programs
  • For programs to work with the CPU, they must contain code that the CPU recognizes
software application coordination1
Software Application Coordination
  • Rather than having the same blocks of code for similar procedures in each software application, The OS includes the blocks of code that software applications need to interact with it
    • Application programming interfaces (APIs)
  • Not only do APIs avoid redundancies in software code, they also make it easier for software developers to respond to changes in the OS
software application coordination2
Software Application Coordination
  • To create programs that can communicate with the OS. Software programmers need only refer to the API code blocks in their individual application programs, rather then including the entire code in the application itself
  • Not only do APIs avoid redundancies in software code, they also make it easier for software developers to respond to changes in the OS
boot process
Boot Process
  • Steps Involved in the Boot Process
    • The basic input/output system (BIOS) is activated
      • A program that manages the data between the OS and all the input and output devices attached to the system
      • Responsible for loading the OS from its permanent location on the hard drive into memory
boot process1
Boot Process
  • Steps Involved in the Boot Process
    • Perform the Power-on Self Test (POST)
      • Ensures that the peripheral devices are attached and operational
      • The BIOS compares the results of the POST with the various hardware configurations that are permanently stored in CMOS
        • Complimentary Metal-Oxide Semiconductor
boot process2
Boot Process
  • Steps Involved in the Boot Process
    • Load the Operating System
      • BIOS locates the System Files
      • The OS supervisor is loaded from its permanent storage location on the hard drive to RAM
        • Memory Resident
      • Other parts of the OS that are less critical are loaded into RAM on an as-needed basis
        • Nonresident
boot process3
Boot Process
  • Steps Involved in the Boot Process
    • Checking Further Configurations and Customizations
      • The OS checks the Registry for the configuration of other system components
        • User Authorizations
handling errors in the boot process
Handling Errors In The Boot Process
  • Computer Doesn’t Boot Properly
    • If you have recently installed new software or hardware, try uninstalling it
    • If the problem does not go away, restart your computer in Safe Mode
      • You can boot directly into Safe Mode by pressing the F8 key during the Boot Process.
handling errors in the boot process1
Handling Errors In The Boot Process
  • Safe Mode
    • Sometimes Windows does not boot properly, and you end up with a screen with the words, Safe Mode in the corners
    • A special diagnostic mode designed for troubleshooting errors
    • Only the essential devices of the system function
      • Mouse, Keyboard, Monitor
handling errors in the boot process2
Handling Errors In The Boot Process
  • Safe Mode
    • The system runs in the most basic graphics mode, resulting in a neutral screen, eliminating any desktop images and nonessential icons
    • The Device Manager is available
      • An OS feature that lets you view and change the properties of all devices attached to your computer
      • Boots Microsoft Windows with only the necessary original Windows drivers
handling errors in the boot process3
Handling Errors In The Boot Process
  • If Windows detects a problem in the Boot process, it will add Last Known Good Configuration to the Windows Advanced Options Menu
    • F8
    • Every time your computer boots successfully, a configuration of the boot process is saved
    • When you choose to boot with the last good configuration, Windows XP starts your computer by using the Registry information that was saved during the last shutdown
handling errors in the boot process4
Handling Errors In The Boot Process
  • Using Safe Mode and Last Known Good Configuration are the two most widely used methods of booting into Windows when you’re unable to do so with your current configuration
handling errors in the boot process5
Handling Errors In The Boot Process
  • If all other attempts to reboot fail, try a system restore
  • System Restore can be used to roll back to a past configuration
  • Because it does not restore any personal data files, your data files will stay intact
handling errors in the boot process6
Handling Errors In The Boot Process
  • Sometimes during the boot process, BIOS skips a device or improperly identifies it
  • Your only indication is that the device won’t respond after the system has been booted
  • The problem can generally be resolved by rebooting
handling errors in the boot process7
Handling Errors in the Boot Process
  • Non-system disk or disk error
    • Remove the floppy from the drive and press any key
  • POST errors
    • Single beep: Everything is loading properly
    • Series of beeps: Hardware problem
  • Safe mode
    • Windows does not boot properly
    • Uninstall any new devices or software
window
Window

Click to view Window features

A

__________

TITLE BAR

B

__________

MENU BAR

G

SIZING BUTTONS

_______________

C

TOOLBARS

__________

F

SCROLLBARS

____________

D

______________

VIEW OPTIONS

E

STATUS BAR

____________

window1
Window
  • The very nature of a desktop is that it enables you to customize it to meet your individual needs
  • Most desktop share common features
    • Windows
      • The rectangular panes on your computer screen that display applications running on your system
    • Toolbars
      • Groups of icons collected in a small box
window2
Window
  • Most desktop share common features
    • Scrollbars
      • Bars that appear at the side or bottom of the screen that control which part of the information is displayed on the screen
    • Minimize, Maximize and Restore, Close buttons
      • Allow you to open, close and resize windows
window3
Window
  • Most desktop share common features
    • Tiling windows
      • Arranging separate windows so that they sit next to each other either horizontally or vertically
    • Cascading windows
      • The windows overlap one another
    • Resize windows
      • Make the Window sizes smaller so that they appear on the screen at the same time
file management
File Management
  • The operating system provides an organizational structure to the computer’s contents
  • Hierarchical structure of directories:
    • Drives
      • Folders
        • Subfolders
          • Files
file management organizing your files
File ManagementOrganizing Your Files
  • A file is a collection of related pieces of information stored together for easy reference
  • A file in an operating system is a collection of program instructions or data stored and treated as a single unit
file management organizing your files1
File ManagementOrganizing Your Files
  • Files can be generated from an application
    • Word, Excel
  • Files can represent an entire application
    • A web page
  • Files are stored on some sort of storage medium
  • As the number of files saved increases, it is important to keep them organized in folders – collection of files
file management organizing your files2
File ManagementOrganizing Your Files
  • Windows organizes the contents of the computer in a hierarchical structure
    • Drives
    • Folders
    • Subfolders
    • Files
file management organizing your files3
File ManagementOrganizing Your Files
  • The hard drive (C drive) is where you permanently store most of your files
  • Other storage devices on your computer are also represented by letters
    • Floppy Drive
    • Zip drive
    • Flash drive
    • CD
    • DVD
file management organizing your files4
File ManagementOrganizing Your Files
  • The hard drive (C drive) is like a large filing cabinet in which all files are stored
    • The top of the filing structure
    • The Root Directory
    • All other folders and files are organized within the Root Directory
file management organizing your files5
File ManagementOrganizing Your Files
  • There are areas in the Root Directory that the OS has filled with folders holding special OS files
    • The programs within these files help run the computer and generally should not be touched
    • The Windows OS also creates other folders which are available to you
      • My Documents
      • My Pictures
file management organizing your files6
File ManagementOrganizing Your Files
  • If you use a Windows PC, Windows Explorer helps you manage your files and folders by showing the location and contents of every drive, folder, and file on your computer
  • Windows Explorer is the most efficient way to manage or even access files
  • If you use a MAC, the Finder is the program that enables you to manage your files and folders
viewing and sorting files and folders
Viewing and Sorting Files and Folders
  • Windows Explorer
    • Tiles View
      • Displays files and folders as icons in list form
      • Each icon includes the filename, the application associated with the file and the file size
viewing and sorting files and folders1
Viewing and Sorting Files and Folders
  • Windows Explorer
    • Thumbnail View
      • Shows the contents of folders as small images
      • Best for folders containing pictures
viewing and sorting files and folders2
Viewing and Sorting Files and Folders
  • Windows Explorer
    • Icon view
      • Displays files and folders in list form, but the icons are smaller and include mo other file information
viewing and sorting files and folders3
Viewing and Sorting Files and Folders
  • Windows Explorer
    • List View
      • Another display of even smaller icons and filenames
      • Good view if you have a lot of content in the folder and need to most or all of it
viewing and sorting files and folders4
Viewing and Sorting Files and Folders
  • Windows Explorer
    • Detail View
    • The most interactive view
    • Files and folders are displayed in list form
viewing and sorting files and folders5
Viewing and Sorting Files and Folders
  • Windows Explorer
    • Can be sorted and grouped by any of the column headings
viewing and sorting files and folders6
Viewing and Sorting Files and Folders
  • Windows includes a Search feature, found on the Start menu, that searches through your hard drive, or other storage devices, to locate that match the criteria you provide
  • Your search can be based on a part of the filename or just a word or phrase in the file
naming files
Naming Files
  • Filename:
    • Name assigned to the file when you saved it
    • Characters not legal in filenames are: \   ⁄   :   *   ?   "   <   >   ¦
    • all others are allowed

Bioreport.doc

or

Bioreport.doc

naming files1
Naming Files
  • File Extension:
    • Following the filename and after the dot (.) comes the file extension or file type
    • When you save a file created in a Windows Operating System, the File Extension is automatically added

Bioreport.doc

or

Bioreport.doc

filename extensions
Filename Extensions
  • Filename extensions:
    • File types
    • Used by programs
file management1
File Management
  • File Extension:
    • Following the filename and after the dot (.) comes the file extension or file type
    • When you save a file created in a Windows Operating System, the File Extension is automatically added
file path
File path
  • File path
    • Location of the file

Secondary folders

Filename

C:

dotmatrix.gif

\My Documents\

Tech in Action\TIA Pics\

Drive

Primary folder

file path1
File Path
  • You can tell the location of a file by its file path.
  • The file path starts with the drive in which the file is located, and includes
    • all folders, subfolders (if any),
    • the filename, and extension.
file path2
File Path
  • For example, if you were saving a picture of Emily Brontë for a term paper for an English Comp course, the file path might be C:\My Documents\Spring 2008\English Comp\TermPaper\Illustrations\EBronte.jpg
working with files
Working with Files
  • File management actions:
    • Open
    • Copy
    • Move
    • Rename
    • Delete
  • Recycle bin

Saving files

file management actions
File Management Actions
  • You open a file by clicking the file in its storage location. The operating system then determines which application needs to be loaded to open the requested file and opens the file with the correct application automatically
  • You can copy a file to another location using the COPY command. When you copy a file When you copy a file, a duplicate file is created and the original file remains in its original location.
file management actions1
File Management Actions
  • To move a file from one location to another, you use the Move command. When you move a file, the original file is deleted from its original location.
  • The Recycle Bin is a folder on the desktop where files deleted from the hard drive reside until you permanently purge them from your system. Files in the recycle bin can be easily restored to their original location.
file management actions2
File Management Actions
  • Unfortunately, files deleted from other drives, such as the floppy drive, CD, flash drive, or network drive, do not go to the Recycle Bin, but are deleted from the system immediately.
utility programs
Utility Programs
  • Small application programs that perform special functions:
    • Manage system resources
      • Disk Defrag
    • Create pleasant environment
      • Screen Savers
    • Improve efficiency
      • File compression utilities
display utilities
Display Utilities
  • Change the appearance of:
    • Desktop
    • Windows colors
    • Font sizes
    • Screen savers
    • Screen resolution
add or remove programs
Add or Remove Programs
  • Installation wizard
  • Uninstall wizard:
    • Do not delete programs
add or remove programs1
Add or Remove Programs
  • When you install a new program, the program runs a wizard that walks you through the installation process.
  • If a wizard does not initialize automatically, however, you should go to the Add or Remove Programs folder in the Control Panel.
add or remove programs2
Add or Remove Programs
  • This prompts the OS to look in the CD or floppy disk drive for the setup program of the new software and starts the installation wizard.
  • Some people think that deleting a program from the Program Files folder on the C drive is the best way to remove a program from the system.
add or remove programs3
Add or Remove Programs
  • however, most programs include support files that are not located in the main program folder.
  • By selecting the Add or Remove Programs icon in Control Panel, you delete the main program file and all supporting files as well.
file compression programs
File Compression Programs
  • Reduce the size of a file:
    • Removes redundancies
    • Makes a large file more compact, making it easier and faster to send over the Internet, uploadto a Web pageor save onto a disk
file compression programs1
File Compression Programs
  • Compression programs look for repeated patterns of letters and replace these patterns with a shorter placeholder
  • The repeated patterns and the associated placeholder are cataloged and stored temporarily in a separate file, called the dictionary
  • Current compression programs can reduce text files by as much as 50%
file compression programs2
File Compression Programs
  • When you want to restore the file to its original state, you need to decompress the file so that the pieces of file that the compression process temporarily removed are restored to the document
  • Generally the same program you used to compress the file has the capability to decompress the file as well
system maintenance utilities
System Maintenance Utilities
  • Disk cleanup
    • Cleans unnecessary files from your hard drive. These include files that have accumulated in the Recycle Bin as well as temporary files. If not deleted periodically, theseunnecessary files can affect performance.
system maintenance utilities1
System Maintenance Utilities
  • Disk defragmenter
    • Regroup related pieces of files together on the hard disk, allowing the OS to work more efficiently. Using the Windows Disk Defragmenter Analyzer feature,users should check their hard drive several times a year.
system maintenance utilities2
System Maintenance Utilities
  • ScanDisk:
    • Error-checking, once known as ScanDisk,checks for lost files and fragments as well as physical errors on your hard drive. Lost files and fragments of files occur as you save, resave, move, delete, and copy files on your hard drive.
system maintenance utilities3
System Maintenance Utilities
  • ScanDisk:
    • Sometimes the system becomes confused, leaving references on the File Allocation Table (FAT) to files that no longer exist or have been moved
    • Physical errors on the hard drive occur when the mechanism that reads the hard drive’s data (stored as 1s or 0s) can no longer determine whether the area holds a 1 or a 0
      • Bad sectors
    • Sometimes Error-checking can recover the lost data, but, more often, it deletes the files that are taking up space unnecessarily.
system maintenance utilities4
System Maintenance Utilities
  • ScanDisk:
    • Error-checking also makes a note of any bad sectors so that the system will not use them again to store data
system maintenance utilities5
System Maintenance Utilities
  • If a program on your system has stopped working, you can use the Windows Task Manager Utility to check on the program or to exit the non-responsive program
system maintenance utilities6
System Maintenance Utilities
  • The Applications tab of Task Manager lists all programs that you are using and indicates whether they are working properly (running) or have stopped improperly (not responding)
  • You can terminate programs that are not responding by clicking the End Task button in the dialogue box
system maintenance utilities7
System Maintenance Utilities
  • If you need outside assistance due to a program error, Dr. Watson for Windows, a tool that is included in Microsoft Windows XP, gathers information about the computer
  • When an error occurs, Dr. Watson automatically creates a text log (drwtsn32.log)
  • The log can be accessed by clicking START and then RUN, and typing “drwtsn32” in the Run box
  • The log can be printed or saved and delivered electronically to any technical support personnel who can use the information for problem diagnosis
system restore
System Restore
  • System Restore:
    • Windows XP has a utility (System Restore) that lets you restore your system settings back to a specific date when everything was working properly
system restore1
System Restore
  • System Restore:
    • Everytime you start your computer, or when a new application or driver is installed, Windows XP automatically creates a snapshot of your entire system’s settings
      • Restore Point
    • You also can create and name your own restore points at any time
system restore2
System Restore
  • System Restore:
    • Creating a restore point is a good idea before making changes to your computer such as installing hardware or software
    • If something goes wrong with the installation process, Windows XP can reset your system to the restore point
system backup
System Backup
  • Backup:
    • Creates a copy of the hard drive to another storage device
    • When you use the Windows Backup Utility you create a duplicate copy of all the data on your hard disk and copy it to another storage device
      • CD or external hard drive
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System Backup
  • Backup:
    • A backup copy protects your data in the event your hard disk fails or files are accidentally erased
    • You should back up the files that are most important to you and keep the backup copy in a safe location
task scheduler
Task Scheduler
  • Task Scheduler:
    • To keep your computer system in top shape, it is important to routinely run some of the utilities previously described
    • Windows Task Scheduler allows you to schedule tasks to run automatically at predetermined times, with no interaction necessary on your part
accessibility utilities
Accessibility Utilities
  • Utility manager:
    • Magnify screen image
    • Screen contents narration
    • On-screen keyboard
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Accessibility Utilities
  • Utility Manager:
    • Magnify Screen Image
      • A display utility that creates a separate window that displays a magnified portion of your screen
      • Makes the screen more readable for users who have impaired vision
      • You can also change the color scheme of the window so that screen colors are inverted
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Accessibility Utilities
  • Utility Manager:
    • Screen Contents Narration
      • A very basic speech program that reads what is on the screen, whether it’s the contents of a window, menu options, or text you have typed
      • Coordinates with text utilities, such as Notepad and WordPad, as well as Internet Explorer
      • May not work correctly with other programs
      • Not meant for individuals who must rely solely on a text-to-speech utility to operate the computer
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Accessibility Utilities
  • Utility Manager:
    • On-Screen Keyboard
      • Displays a keyboard on the screen
      • You type by clicking on or hovering over the keys with a pointing device
      • Not meant for everyday use for individuals with severe disabilities
chapter 5 summary questions
Chapter 5 Summary Questions
  • What software is included in system software?
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Chapter 5 Summary Questions
  • What are the different kinds of operating systems?
chapter 5 summary questions2
Chapter 5 Summary Questions
  • What are the most common desktop operating systems?
chapter 5 summary questions3
Chapter 5 Summary Questions
  • How does the operating system provide user interaction with the computer?
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Chapter 5 Summary Questions
  • How does the operating system help manage:
    • The processor?
    • Memory and storage?
    • Hardware and peripheral devices?
    • Application software?
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Chapter 5 Summary Questions
  • How does the operating system help the computer start up?
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Chapter 5 Summary Questions
  • What are the main desktop and windows features?
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Chapter 5 Summary Questions
  • How does the operating system help keep the computer organized?
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Chapter 5 Summary Questions
  • What utility programs are included in system software and what do they do?