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COMP 6005 An Introduction To Computing

COMP 6005 An Introduction To Computing. Session Two: Computer Software Systems Software. System Software. Programs that control or maintain the operations of the computer and its devices Serves as interface between the user, application software, and the computer hardware Two types:

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COMP 6005 An Introduction To Computing

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  1. COMP 6005 An Introduction To Computing Session Two: Computer Software Systems Software

  2. System Software • Programs that control or maintain the operations of the computer and its devices • Serves as interface between the user, application software, and the computer hardware • Two types: • Operating system • Utility programs

  3. Operating System • Set of programs that coordinates all activities among computer hardware devices • Contains instructions that allow users to run application software • Resides on computer’s hard drive or ROM chip (handhelds) • Examples: Windows XP, Mac OS X

  4. Start a computer Provide a user interface Manage programs Manage memory Schedule jobs Monitor performance Configure devices Establish Internet connection Provide file management Control network and administer security Common Functions

  5. Discussion • Issue 8-1, pg 403

  6. Types of Operating Systems • Stand-alone • Network • Embedded

  7. Stand-Alone Operating Systems • Complete operating system that works on a desktop, notebook or mobile computing device • Can work with or without a network; may include networking capabilities • Examples: DOS, Windows XP, Mac OS X, UNIX, Linux

  8. Network Operating Systems • Designed specifically to support a network of any size, including medium to large-sized organisations and web servers • Typically resides on a server – client computers rely on the server for resources • Examples: NetWare, Windows Server 2003, UNIX, Linux, Solaris

  9. Embedded Operating Systems • Operating systems used on most PDAs and small devices • Resides on a ROM chip • Examples: Windows CE .NET, Windows Mobile 2003, Palm OS, Symbian OS

  10. Discussion • Issue 8-3, pg 409 • Looking Ahead 8-1, pg 411 • Issue 8-4, pg 414 • Looking Ahead 8-2, pg 416

  11. Utility Program • Allows users to perform maintenance-type tasks, usually related to managing the computer, devices or programs • Example: a program that examines a floppy disk or hard disk to determine if it contains any physical flaws such as scratches

  12. Stand-Alone Utility Programs • Antivirus programs; e.g: Norton Antivirus • Personal firewalls; e.g: ZoneAlarm • File compression; e.g: WinZip • Personal computer maintenance; e.g: Norton Utilities

  13. Assignment • Choose one example of each type of operating system and describe how it operates • Choose a stand-alone utility program and describe its operation and uses

  14. Links • Reference • Discovering Computers 2005 by Shelly, Cashman and Vermaat • Of Interest • http://www.microsoft.com/resources/ngscb/productinfo.mspx • http://www.microsoft.com/windowsxp/mediacenter/default.mspx

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