1. 55 CHAPTER SYSTEM SOFTWARE

2. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-2 Competencies Describe the differences between system software and application software Discuss the four types of system software Discuss operating systems Describe Windows, Mac, OS, UNIX, & Linux

3. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-3 Competencies cont. Describe the purpose of utilities and utility suites Identify the five most essential utilities Discuss Windows utility programs Describe the device drivers including printer drivers

4. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-4 System Software Handles technical details Works with end users, application software, and computer hardware Four types of programs Operating system Utilities Device drivers Language translators

5. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-5 Operating Systems A collection of programs that handles technical tasks Every computer has an operating system Performs three types of functions Manages computer resources Provides user interface Runs applications

6. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-6 Features of an Operating System Booting Features in common with application software Icons Pointers Windows Menus Dialog boxes

7. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-7 Categories of Operating Systems Hundreds of operating systems Three basic categories Embedded – hand-held Network OS – linked computers Stand-alone OS – desktop

8. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-8 More on Operating Systems OS often called software environment or platform Operating systems commonly used by individuals Mac OS – powerful and easy to use UNIX – network; originally designed for Web LINUX – non proprietary; free off Web

9. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-9 Windows The most popular microcomputer operating system Comes in a variety of different versions Windows XP is the latest version

10. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-10 Mac OS An operating system designed to run on Apple computers Not used as widely as Windows Mac OS X is the latest version

11. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-11 UNIX and Linux Unix operating system Originally designed to run on minicomputers on a network Used by powerful microcomputers Linux is a version of UNIX Not proprietary Open source

12. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-12 Utilities Specialized programs to make computing easier Most essential utilities Troubleshooting Antivirus Uninstall Backup File compression

13. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-13 Windows Utilities Backup Disk Cleanup Disk Defragmenter

14. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-14 Backup

15. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-15 Disk Cleanup

16. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-16 Disk Defragmenter

17. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-17 Utility Suites A group of several utility programs bundled for sale Buying the package is economical Popular suites eSafe Desktop McAfee Office Norton System Works

18. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-18 Device Drivers Specialized programs that allow communication between a device and the computer Loaded into memory each time When a new device is added, new device drive must be installed

19. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-19 A Look to the Future IBM's Aware Computer IBM concentrating research efforts on eLiza Handles time-consuming maintenance Autonomic computer Self-maintaining servers Self-repairing Self-protecting Self-updating

20. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-20 Key Terms antivirus utility (128) application (128) background (123) backup (129) backup program (128) booting ( 123) character based interface (123) client operating system (125) cold boot (123) computer virus (132) desktop (123) desktop operating system (125) device driver (122) diagnostic utility (128) dialog box (124) Disk cleanup (130) Disk defragmenter (131)

21. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-21 Key Terms Dock (127) driver (133) embedded operating system (124) file (124) file compression utility (128) folder (124) foreground (123) fragmented (131) graphical user interface (GUI) (123) Help (124) icon (123) language translator (122) Linux (127) Mac OS (127) Mac OS X (127) menu (123)

22. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-22 Key Terms multitasking (123) network operating system (NOS) (124) One Button Checkup (125) open source (132) operating system (125) platform (122) pointer (125) proprietary operating system (123) resource (123) sector (131) service program (122) Sherlock (127) software environment (125) software platform (125) stand-alone operating system (125) Start menu (126)

23. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-23 Key Terms system software (122) track (131) troubleshooting utility (128) uninstall utility (128) UNIX (127) user interface (123) utility (122) utility suite (132) warm boot (123) Window (123) Windows (125) Windows Add Printer Wizard (133) Windows Update (133) Windows XP (136)

24. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-24 FAQs What is an operating system? What is the difference between a warm boot and a cold boot? What kinds of devices use embedded operating systems? I need to remove a program that I no longer use. How can I do this? What software is needed to install a new device on my desktop computer?

25. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5-25 Discussion Questions Describe how files are stored and organized on a disk. Describe some of the programs in the Norton SystemWorks utility suite. Explain the purpose of an operating system. List the different versions of the Windows operating system. Explain how multitasking works.