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Objectives Overview

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

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  1. Objectives Overview See Page 269 for Detailed Objectives Discovering Computers Fundamentals, 2010 Edition Chapter 7

  2. 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

  3. 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

  4. Operating Systems Pages 270– 271 Figure 7-1 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  5. 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

  6. Operating System Functions • An operating system includes various shut down options Page 272 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  7. 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

  8. 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

  9. Operating System Functions • How an operating system handles programs directly affects your productivity Pages 273 - 275 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  10. Operating System Functions Page 274 Figure 7-4 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. Operating System Functions • Operating systems often provide users with the capability of: Page 277 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  17. Operating System Functions • Automatic updateautomatically provides updates to the program Page 277 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  18. 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

  19. 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

  20. Types of Operating Systems Page 279 Figure 7-8 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  21. 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

  22. 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

  23. Stand-Alone Operating Systems Page 280 Figure 7-9 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  24. 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

  25. 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

  26. Server Operating Systems Pages 282 - 283 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  27. 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

  28. 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

  29. 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

  30. 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

  31. 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

  32. 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

  33. 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

  34. 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

  35. 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

  36. Utility Programs Page 288 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  37. Video: Free Online Antivirus CLICK TO START Discovering Computers Fundamentals, 2010 Edition Chapter 7

  38. Utility Programs Pages 288 – 289 Figures 7-20 – 7-21 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  39. Utility Programs Page 289 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  40. Utility Programs • Filters are programs that remove or block certain items from being displayed Pages 289 - 290 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  41. 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

  42. 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

  43. 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

  44. 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

  45. Summary Page 292 Discovering Computers Fundamentals, 2010 Edition Chapter 7

  46. Chapter 7 Complete

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