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Objectives Overview. See Page 269 for Detailed Objectives. System Software. System software consists of the programs that control or maintain the operations of the computer and its devices. Page 270. Operating Systems.

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Objectives overview

Objectives Overview

See Page 269

for Detailed Objectives

Discovering Computers Fundamentals, 2010 Edition Chapter 7


System software

System Software

  • System softwareconsists of the programs that control or maintain the operations of the computer and its devices

Page 270

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating systems

Operating Systems

  • An operating system(OS) is a set of programs containing instructions that work together to coordinate all the activities among computer hardware resources

Page 271

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating systems1

Operating Systems

Pages 270– 271

Figure 7-1

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions

Operating System Functions

  • The process of starting or restarting a computer is called booting

Page 272

Figure 7-2

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions1

Operating System Functions

  • An operating system includes various shut down options

Page 272

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions2

Operating System Functions

  • A user interfacecontrols how you enter data and instructions and how information is displayed on the screen

  • With a graphical user interface (GUI), you interact with menus and visual images

Pages 272 – 273

Figure 7-3a

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions3

Operating System Functions

  • With a command-line interface, a user uses the keyboard to enter data and instructions

Page 273

Figure 7-3b

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions4

Operating System Functions

  • How an operating system handles programs directly affects your productivity

Pages 273 - 275

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions5

Operating System Functions

Page 274

Figure 7-4

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions6

Operating System Functions

  • Memory managementoptimizes the use of RAM

  • Virtual memoryis a portion of a storage medium functioning as additional RAM

  • Windows ReadyBoostcan allocate up to 4 GB of removable flash memory devices as additional memory cache

Page 275

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions7

Operating System Functions

  • The operating system determines the order in which tasks are processed

Click to view Web Link,click Chapter 7, Click Web Link from left navigation, then click Spooling below Chapter 7

Pages 275 - 276

Figure 7-5

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions8

Operating System Functions

Click to view Web Link,click Chapter 7, Click Web Link from left navigation, then click Plug and Play

below Chapter 7

Page 276

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions9

Operating System Functions

  • Operating systems typically provide a means to establish Internet connections

Page 276

Figure 7-6

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions10

Operating System Functions

  • A performance monitoris a program that assesses and reports information about various computer resources and devices

Page 277

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions11

Operating System Functions

  • Operating systems often provide users with the capability of:

Page 277

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions12

Operating System Functions

  • Automatic updateautomatically provides updates to the program

Page 277

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions13

Operating System Functions

  • Some operating systems are designed to work with a server on a network

  • A server operating systemorganizes and coordinates how multiple users access and share resources on a network

  • A network administrator uses the server operating system to:

    • Add and remove users, computers, and other devices

    • Install software and administer network security

Pages 277 - 278

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Operating system functions14

Operating System Functions

  • Each user has a user account

    • A user name, or user ID, identifies a specific user

    • A password is a private combination of characters associated with the user name

Page 278

Figure 7-7

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Types of operating systems

Types of Operating Systems

Page 279

Figure 7-8

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Stand alone operating systems

Stand-Alone Operating Systems

  • A stand-alone operating systemis a complete operating system that works on a desktop computer, notebook computer, or mobile computing device

Page 280

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Stand alone operating systems1

Stand-Alone Operating Systems

  • Windows Vistais Microsoft’s fastest, most efficient operating system to date and is available in multiple editions:

Click to view Web Link,click Chapter 7, Click Web Link from left navigation, then click Windows Vista

below Chapter 7

Pages 413 - 414

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Stand alone operating systems2

Stand-Alone Operating Systems

Page 280

Figure 7-9

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Stand alone operating systems3

Stand-Alone Operating Systems

  • The Macintosh operating systemhas set the standard for operating system ease of use

  • Latest version is Mac OS X

Click to view Web Link,click Chapter 7, Click Web Link from left navigation, then click Mac OS X

below Chapter 7

Page 281

Figure 7-10

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Stand alone operating systems4

Stand-Alone Operating Systems

Click to view Web Link,click Chapter 7, Click Web Link from left navigation, then click Linux

below Chapter 7

Pages 281 – 282

Figures 7-11 – 7-12

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Server operating systems

Server Operating Systems

Pages 282 - 283

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Embedded operating systems

Embedded Operating Systems

  • An embedded operating systemresides on a ROM chip on a mobile device or consumer electronic device

Page 283

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs

Utility Programs

  • A utility programis a type of system software that allows a user to perform maintenance-type tasks

Page 284

Figure 7-14

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs1

Utility Programs

  • A file manageris a utility that performs functions related to file management

    • Displaying a list of files

    • Organizing files in folders

    • Copying, renaming, deleting, moving, and sorting files and folders

    • Creating shortcuts

Page 285

Figure 7-15

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs2

Utility Programs

  • A search utilityis a program that attempts to locate a file on your computer based on criteria you specify

Page 285

Figure 7-16

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs3

Utility Programs

  • An uninstaller removes a program, as well as any associated entries in the system files

  • An image viewerallows users to display, copy, and print the contents of a graphics file

Page 285

Figure 7-17

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs4

Utility Programs

  • A disk cleanup utility searches for and removes unnecessary files

    • Downloaded programfiles

    • Temporary Internetfiles

    • Deleted files

    • Unused programfiles

Page 286

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs5

Utility Programs

  • A disk defragmenterreorganizes the files and unused space on a computer’s hard disk so that the operating system accesses data more quickly and programs run faster

    • Defragmenting

Page 286

Figure 7-18

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs6

Utility Programs

  • A backup utilityallows users to copy files to another storage medium

  • A restore utilityreverses the process and returns backed up files to their original form

Page 286

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs7

Utility Programs

  • A screen saver causes a display device’s screen to show a moving image or blank screen if no activity occurs for a specified time

  • A personal firewalldetects and protects a personal computer from unauthorized intrusions

Page 287

Figure 7-19

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs8

Utility Programs

Page 288

Discovering Computers Fundamentals, 2010 Edition Chapter 7


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Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs9

Utility Programs

Pages 288 – 289

Figures 7-20 – 7-21

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs10

Utility Programs

Page 289

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs11

Utility Programs

  • Filters are programs that remove or block certain items from being displayed

Pages 289 - 290

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs12

Utility Programs

  • A file compression utilityshrinks the size of a file(s)

    • Compressing files frees up room on the storage media

  • Compressed files sometimes are called zipped files

    • Can be uncompressed

Click to view Web Link,click Chapter 7, Click Web Link from left navigation, then click WinZip

below Chapter 7

Page 290

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs13

Utility Programs

  • A media playerallows you to view images and animation, listen to audio, and watch video files on your computer

Page 290

Figure 7-22

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs14

Utility Programs

  • Disc burning softwarewrites text, graphics, audio, and video files on a recordable or rewritable optical disc

Page 291

Figure 7-23

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Utility programs15

Utility Programs

  • A personal computer maintenance utility identifies and fixes operating system problems, detects and repairs disk problems, and includes the capability of improving a computer’s performance

Page 291

Figure 7-24

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Summary

Summary

Page 292

Discovering Computers Fundamentals, 2010 Edition Chapter 7


Objectives overview

Chapter 7 Complete


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