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Understanding System Software: Operating Systems & Utilities

Learn about system software components, types, and functions. Explore operating systems like Windows, Mac OS, UNIX, and Linux. Discover utilities for easier computing and device drivers for hardware communication. Dive into application software details and common features.

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Understanding System Software: Operating Systems & Utilities

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  1. 1/3 CHAPTER INFORMATION TECHNOLOGY, THE INTERNET, AND YOU

  2. Lecture Objectives • Details about Software Component • Software Classification • System Software Details • Types of System Software

  3. …Lecture Objectives • Discuss common features of most software applications • Discuss word processors and word processing features • Describe spreadsheets and spreadsheet features

  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. System Software: 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. Features of an Operating System • Booting • Features in common with application software • Icons • Pointers • Windows • Menus • Dialog boxes

  7. Categories of Operating Systems • Hundreds of operating systems • Three basic categories • Embedded – hand-held • Network OS – linked computers • Stand-alone OS – desktop Page 124

  8. More on Operating Systems • OS often called software environment or platform • Operating systems commonly used by individuals • Windows – most widely used • Mac OS – powerful and easy to use • UNIX – network; originally designed for Web • LINUX – non proprietary; free from the Web Page 125

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

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

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

  14. Backup

  15. Disk Cleanup

  16. Disk Defragmenter

  17. 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

  18. System Software: Device Driver • Instructs the processor about “how to make use of a hardware device?” • Application programs forwards any hardware access request (by the user) to the relevant system program. Application Program Device Driver End User A word processing application program sends a document for print to the printer’s driver program.

  19. Installing a Printer Driver • A simple process using the Plug-n-Play ability of Microsoft Windows

  20. 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

  21. Application Software Details

  22. Application Software • Basic applications • Called general-purpose or productivity applications • Common types • Word processors • Spreadsheets • Database management systems • Presentation graphics • Specialized applications • Not included in the course (slides will be available for self review)

  23. Common Features • Graphical User Interface (GUI) • Windows • Menus • Toolbars • Help

  24. Office Assistant Common Features of Application Programs • Getting Help • To provide the user with the information about all available options. • Help navigation should be easy to access. • Use of hyperlinks. • Use of indexed list. • Use of Answer Wizard.

  25. Open Save Print Toolbars • Commonly used commands • Contain shortcuts • Most common • Standard • Formatting

  26. Classes of Application Software • General Purpose Applications • Word Processing Programs • Spreadsheet Programs • Database Management Systems • Presentation Graphics

  27. Word Processors • Used to create text-based documents • Memos, letters, and faxes • Newsletters, manuals, and brochures • Three most widely used word processing programs • Microsoft Word • Corel WordPerfect • Lotus WordPro

  28. Word Wrap Editing Thesaurus Spelling and grammar checkers Find and Replace Formatting Font and font sizing Character effects Bulleted and numbered lists Word Processor Features italics size bold colors

  29. Creating a Report

  30. Example Word Processors • Three Popular Word Processing Programs • Microsoft Word • Word Perfect • Lotus Word Pro

  31. Spreadsheet Programs • Main Features • Organizing Data • by making use of tables, coloring, 3D effects etc. • Manipulating Data • By making use of data values in formula & function calculations. • Graphing Data • By plotting data values on different types of graphs like bar charts, line graphs etc.

  32. Spreadsheet Features • Workbook files • Worksheets • Formulas • Functions • Analytical graphs or charts • What if Analysis

  33. Example Spreadsheet Programs • Three Popular Spreadsheet Programs • Microsoft Excel • Corel Quattro Pro • Lotus 1-2-3

  34. Creating a Sales Forecast

  35. Creating a Chart

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