CHAPTER

1. 5 CHAPTER SYSTEM SOFTWARE

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. 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. System Software • Handles technical details • Works with end users, application software, and computer hardware. • System software controls where a word processing program is stored in memory. • How commands are converted so that the system unit can process Them. • How the output is printed.

5. System Software cont. • Four types of programs • Operating system: programs that coordinate computer resources, provide a user interface and run applications. • Utilities( service programs): perform specific tasks to managing computer resources. • Device drivers: allow I/O devices to communicate with the rest of the computer system. • Language translators: convert the programming instruction into a language that computer understand and process.

6. 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

7. Operating System cont • Recourses: memory, HDD, printer • User interface: old OS used character based interface. • applications

8. Features of an Operating System • Booting

9. Booting cont • Warm boot: computer already on • Cold boot: start computer that has been turned off

10. Features of an operating system • Features in common with application software • Icons • Pointers • Windows • Menus • Dialog boxes Provide information or request input • Help

11. Categories of Operating Systems • Hundreds of operating systems • Three basic categories • Embedded – hand-held Or small devices like PDA’s OS stored in ROM Palm OS or windows CE • Network OS – linked computers Windows NT server, UNIX, Z/OS http://www-03.ibm.com/servers/eserver/zseries/zos/ • Stand-alone OS – desktop

12. 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

13. Windows • The most popular microcomputer operating system • Comes in a variety of different versions • Windows 7 is the latest version

14. Windows History

15. Mac OS • An operating system designed to run on Apple computers • Not used as widely as Windows HW2 1- fill the blank • Mac OS …. is the latest version 2- Attach the main interface of this OS. 3- Introduction about this OS

16. 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

17. Utilities • Specialized programs to make computing easier • Most essential utilities • Troubleshooting • Antivirus • Uninstall • Backup • File compression

18. Windows Utilities • Backup • Disk Cleanup • Disk Defragmenter

19. Backup

20. Disk Cleanup

21. Disk Defragmenter

22. 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

23. 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

24. A Look to the FutureIBM's Aware Computer • IBM concentrating research efforts on eLiza • Handles time-consuming maintenance • Autonomic computer • Self-maintaining servers • Self-repairing • Self-protecting • Self-updating

25. 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) Key Terms

26. 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) Key Terms

27. 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) Key Terms

28. 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) Key Terms

29. 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?

30. 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.