Lecture Basic network management: Chapter 2 - Trung tâm Athena

Chapter 2 - Software & operating system. After studying this chapter you will be able to understand: What is the software? How is software categorized? What is an operating system? What does an operating system do?
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Lecture Basic network management: Chapter 2 - Trung tâm Athena Chapter2:Software&OperatingSystemATHENA Objective  Whatisthesoftware?  Howissoftwarecategorized?  Whatisanoperatingsystem?  Whatdoesanoperatingsystemdo?ATHENA What’sthesoftware?  Softwareistheinstructionsandassociateddata, storedinelectronicformat,thatdirectthe computertoaccomplishatask.  Acomputerprogramisasetofdetailed, stepbystepinstructionsthattellsacomputer howtosolveaproblemorcarryoutatask.ATHENA Howissoftwarecategorized?  Softwareiscategorizedaseitherapplication softwareorsystemsoftware.  Applicationsoftwareisdesignedtobeused forapurposesuchasdrawingdesigns, creatingdocuments,etc.  Systemsoftwareisdesignedtohelpthe computercarryoutthebasicoperatingfunctions Ex:Operatingsystems,utilities,anddriversATHENA OperatingSystemOverview:What isanoperatingsystem?  Anoperatingsystem(OS)isthemaster controllerforalloftheactivitiesthattakeplace withinacomputer. Ex:MicrosoftWindowsXP,MacOS,Linux, UNIX  Theoperatingsystemalsointeractswiththe nextfunctionallayercalledapplication software.ATHENA Howissoftwarecategorized?ATHENA Whatdoesanoperatingsystemdo? Example:ATHENA PersonalComputer OperatingSystems  Windows,MacOS,Linux,Unix,andDOS  What’sthebestsellingoperatingsystem?ATHENA PersonalComputer OperatingSystems  MicrosoftWindowsisthemostpopular,andis installedonover80%oftheworld’spersonal computers  UNIXwasdevelopedin1969atAT&T’sBellLabs  Linuxwasdevelopedin1991  DOS(DiskOperatingSystem)wasdevelopedby MicrosoftATHENA PersonalComputer OperatingSystems  Differentoperatingsystemsareneeded fordifferentcomputingtasks: • Singleuseroperatingsystem – Ex:MSDOS,Windows3.1,Windows3.11 • Multiuseroperatingsystem – Ex:WindowsServer2000/2003 • Networkoperatingsystem – Ex:Linux,Unix,WindowsServer2000/2003 • Multitaskingoperatingsystem – Ex:WindowsServer2000/2003 • Desktopoperatingsystem – Ex:Windows95,WindowsMe,WindowsXPATHENA Summary  Software  Howissoftwarecategorized?  operatingsystemOverview  Whatdoesanoperatingsystemdo?ATHENA