System software os system and utility ggood


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System software os system and utility ggood

  1. 1. Prepared by: Rozana Diana Ahmad Rusli
  2. 2. What is Software? <ul><li>Software is a program which consists of a set of instructions that tell the computer how to perform a specific operation </li></ul>
  4. 4. System Software <ul><li>What is system software ? </li></ul><ul><li>Programs that control or maintain operation of </li></ul><ul><li>computer </li></ul>TYPE OF SYSTEM SOFTWARE
  5. 5. Operating System
  6. 6. Function of Operating Systems <ul><li>What are the functions of an operating system ? </li></ul>administer security start the computer manage memory monitor performance control a network provide a user interface manage programs provide file management and other utilities establish an Internet connection schedule jobs and configure devices
  7. 7. User interface <ul><li>command-line interface </li></ul><ul><ul><li>Controls how you enter data and instructions and how information displays on the monitor’s screen </li></ul></ul><ul><ul><li>With a command-line interface , a user types commands or presses special keys on the keyboard to enter data and instructions </li></ul></ul>MS-DOS – circa 1981 until today
  8. 8. <ul><li>Enable the user to avoid memorizing keyword. It Provide menus by given point in a form of text based menu </li></ul>Menu Driven interface User interface
  9. 9. <ul><li>graphical user interface (GUI) </li></ul>User interface <ul><ul><li>User interacts </li></ul></ul><ul><ul><li>with menus and </li></ul></ul><ul><ul><li>visual images such </li></ul></ul><ul><ul><li>as buttons and </li></ul></ul><ul><ul><li>other graphical </li></ul></ul><ul><ul><li>objects to issue </li></ul></ul><ul><ul><li>commands </li></ul></ul>
  10. 10. Type of Operating System
  11. 11. Example Operating Systems <ul><li>Windows XP </li></ul><ul><ul><li>Fast, reliable Windows operating system </li></ul></ul>
  12. 12. Example Operating Systems <ul><li>Windows Vista </li></ul><ul><ul><li>Successor to Windows XP, containing a new interface and new / enhanced features </li></ul></ul>
  13. 13. Example Operating Systems <ul><li>Mac OS X </li></ul><ul><ul><li>Available only for computers manufactured by Apple, Inc. </li></ul></ul>
  14. 14. Example Operating Systems <ul><li>UNIX </li></ul><ul><ul><li>Used by power users because of its flexibility & power </li></ul></ul><ul><ul><li>Most versions offer GUI </li></ul></ul><ul><ul><li>Available for computers of all sizes </li></ul></ul>
  15. 15. Example Operating Systems <ul><li>Linux </li></ul>Red Hat provides a version of Linux called Red Hat EnterpriseLinux. Novell offers a Linux version call Suse Linux <ul><ul><li>Popular,free,multitasking UNIX-type operating system </li></ul></ul><ul><ul><li>Open-source software e code is available to public </li></ul></ul>
  16. 16. Example Embedded Operating Systems <ul><li>What is an embedded operating system ? </li></ul><ul><ul><li>Found on most mobile computers, PDAs, and other small devices </li></ul></ul><ul><ul><ul><li>Windows CE is scaled-down version of Windows </li></ul></ul></ul><ul><ul><ul><li>Windows Mobile for Pocket PC </li></ul></ul></ul><ul><ul><ul><li>Palm OS for Palm </li></ul></ul></ul><ul><ul><ul><li>Embedded Linux </li></ul></ul></ul><ul><ul><ul><li>Blackberry OS </li></ul></ul></ul><ul><ul><ul><li>Symbian OS </li></ul></ul></ul>
  17. 17. Utility Programs <ul><li>What is a utility program ? </li></ul><ul><ul><li>System software that performs maintenance-type tasks </li></ul></ul><ul><ul><li>There are lots of utility programs </li></ul></ul>
  18. 18. Example Utility Programs <ul><li>What is a file manager ? </li></ul><ul><ul><li>Performs functions such as formatting, copying, renaming, deleting, and moving files </li></ul></ul><ul><ul><li>Image viewer displays the contents of a graphics file when you double click on it </li></ul></ul>
  19. 19. Example Utility Programs <ul><li>What is a personal firewall ? </li></ul><ul><ul><li>Detects and protects a personal computer from unauthorized intrusions </li></ul></ul><ul><ul><li>Windows XP & Vista automatically enable the built-in personal firewall upon installation </li></ul></ul>
  20. 20. Example Utility Programs <ul><li>What is a disk defragmenter ? </li></ul><ul><ul><li>Reorganizes files and unused space on your hard disk so programs run faster </li></ul></ul>fragmented disk disk after defragmentation process
  21. 21. Example Utility Programs What is a backup utility ? <ul><ul><li>Copies selected files or your entire hard disk onto another storage medium </li></ul></ul><ul><ul><li>A restore program reverses the backup process and returns backed up files to their original form </li></ul></ul>Highly Recommended!
  22. 22. Example Utility Programs <ul><li>What is an antivirus program ? </li></ul><ul><ul><li>Identifies and removes viruses in memory, storage media, and incoming files </li></ul></ul><ul><ul><li>Must be updated frequently </li></ul></ul>McAfee Symantec/Norton Free Versions: AVG AVAST
  23. 23. Example Utility Programs <ul><li>What is Spyware ? </li></ul><ul><ul><li>Program placed on a computer without the user’s knowledge that secretly collects information about the user </li></ul></ul><ul><ul><li>A spyware remover is a program that detects and deletes spyware, adware, and similar programs </li></ul></ul>
  24. 24. Example Utility Programs <ul><li>What is a file compression utility ? </li></ul><ul><ul><li>Shrinks size of files to free up room and improve performance </li></ul></ul><ul><ul><li>Compressed files are sometimes called zipped files </li></ul></ul><ul><ul><li>Two popular utilities: PKZIP and WinZip </li></ul></ul><ul><ul><li>Windows XP and Vista can create folders with compressed files within it </li></ul></ul><ul><ul><li>Outlook email client can compress attached images </li></ul></ul>