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Chapter 3: SYSTEM SOFTWARE

U NIVERSITI P UTRA M ALAYSIA. Chapter 3: SYSTEM SOFTWARE. Learning Objectives. Explain methods of OS and utility program functions Use appropriate commands in OS and utility program. Objectives Overview. Discovering Computers 2014: Chapter 9. Objectives Overview.

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Chapter 3: SYSTEM SOFTWARE

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  1. UNIVERSITI PUTRA MALAYSIA Chapter 3:SYSTEM SOFTWARE

  2. Discovering Computers 2014: Chapter 9 Learning Objectives • Explain methods of OS and utility program functions • Use appropriate commands in OS and utility program

  3. Objectives Overview Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  4. Objectives Overview Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  5. Discovering Computers 2014: Chapter 9 System Software • System softwareconsists of the programs that control or maintain the operations of the computer and its devices

  6. Operating Systems • An operating system(OS) is a set of programs containing instructions that work together to coordinate all the activities among computer and mobile device hardware Discovering Computers 2014: Chapter 9

  7. Operating Systems Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  8. Discovering Computers 2014: Chapter 9 Operating System Functions • The process of starting or restarting a computer is called booting

  9. Operating System Functions • An operating system includes various power options Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  10. Discovering Computers 2014: Chapter 9 Operating System Functions

  11. 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 Discovering Computers 2014: Chapter 9

  12. Operating System Functions • In a command-line interface, a user types commands represented by short keywords or abbreviations or presses special keys on the keyboard to enter data and instructions Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  13. Operating System Functions • How an operating system handles programs directly affects your productivity Discovering Computers 2014: Chapter 9

  14. Operating System Functions Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  15. Operating System Functions • Memory management optimizes the use of the computer or device’s internal memory • Virtual memoryis a portion of a storage medium functioning as additional RAM Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  16. Operating System Functions • The operating system determines the order in which tasks are processed Discovering Computers 2014: Chapter 9

  17. Operating System Functions Discovering Computers 2014: Chapter 9

  18. Operating System Functions • Operating systems typically provide a means to establish Internet connections Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  19. Operating System Functions • A performance monitoris a program that assesses and reports information about various computer resources and devices Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  20. Operating System Functions • Operating systems often provide users with a variety of tools related to managing a computer, its devices, or its programs Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  21. Operating System Functions • Automatic updateautomatically provides new features or corrections to the program Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  22. Operating System Functions • Some operating systems are designed to work with a server on a network • These multiuser operating systems allow multiple users to share a printer, Internet access, files, and programs • A network administrator uses the server operating system to: • Add and remove users, computers, and other devices • Configure the network, install software and administer network security Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  23. Operating System Functions • A user account enables a use to sign in to, or access resources on, a network or computer • A user name, or user ID, identifies a specific user • A passwordis a private combination of characters associated with the user name Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  24. Types of Operating Systems Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  25. Desktop Operating Systems • A desktop operating systemis a complete operating system that works on desktops, laptops, and some tablets Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  26. Desktop Operating Systems • Windows 8 offers these features: • Start screen interface with tiles • Includes the desktop interface • Support for input via touch, mouse, and keyboard • Email app, calendar app, and browser included • Photos, files, and settings you can sync with SkyDrive • Enhanced security through an antivirus program, firewall, and automatic updates • Windows Store offers additional applications for purchase Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  27. Desktop Operating Systems Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  28. Desktop Operating Systems • The Macintosh operating system has earned a reputation for its ease of use • Latest version is OS X Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  29. Desktop Operating Systems Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  30. Desktop Operating Systems • Chrome OSis a Linux-based operating system designed to work primarily with web apps Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  31. Server Operating Systems Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  32. Mobile Operating Systems • The operating system on mobile devices and many consumer electronics is called a mobile operating systemand resides on firmware Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  33. Mobile Operating Systems • Androidis an open source, Linux-based mobile operating system designed by Google for smartphones and tablets Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  34. Mobile Operating Systems • iOS, developed by Apple, is a proprietary mobile operating system specifically made for Apple’s mobile devices Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  35. Mobile Operating Systems • Windows Phone, developed by Microsoft, is a proprietary mobile operating system that runs on some smartphones Discovering Computers 2014: Chapter 9 Discovering Computers 2014: Chapter 9

  36. Embedded Operating Systems Discovering Computers 2014: Chapter 9

  37. Utility Programs • A utility programis a type of system software that allows a user to perform maintenance-type tasks Discovering Computers 2014: Chapter 4

  38. File and Disk Management Tools • A file manager is a tool that performs functions related to file management Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  39. File and Disk Management Tools • A search tool is a program, usually included with an operating system, that attempts to locate a file on your computer or mobile device based on criteria you specify Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  40. File and Disk Management Tools • An image viewer is a tool that allows users to display, copy, and print the contents of a graphics file, such as a photo • An uninstalleris a tool that removes a program, as well as any associated entries in the system files Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  41. File and Disk Management Tools • A disk cleanup tool searches for and removes unnecessary files Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  42. File and Disk Management Tools • A disk defragmenter is a tool that reorganizes 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 Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  43. File and Disk Management Tools Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  44. File and Disk Management Tools • A backup tool allows users to copy, or back up, selected files or the contents of an entire storagemedium to another storage location • A restore utility reverses the process and returns backed up files to their original form Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  45. Security Tools • A personal firewall is a security tool that detects and protects a personal computer and its data from unauthorized intrusions Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  46. Security Tools • An antivirus programprotects a computer against viruses by identifying and removing any computer viruses found in memory, on storage media, or on incoming files Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  47. Security Tools

  48. Security Tools

  49. Security Tools • Spyware is a program placed on a computer or mobile device without the user’s knowledge that secretly collects information about the user and then communicates the information it collectsto some outside source while the user is online • Adware is a program that displays an online advertisement in a banner or pop-up window on webpages, email messages, or other Internet services Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

  50. Security Tools Discovering Computers 2014: Chapter 4 Discovering Computers 2014: Chapter 4

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