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The Role of the The Role of the Operating SystemOperating System
The BasicsThe Basics
Four Main FunctionsFour Main Functions
Control Hardware AccessControl Hardware Access
File ManagementFile Management
User ManagementUser Management
Manage Software ApplicationsManage Software Applications
Some OS FactsSome OS Facts
All Computer Systems require an OS to All Computer Systems require an OS to provide an interface between the User, provide an interface between the User, Hardware and Application SoftwareHardware and Application Software
GUI [Graphical User Interface]GUI [Graphical User Interface]
CLI [Command Line Interface]CLI [Command Line Interface]
Terms to know [1]Terms to know [1]
Multi-UserMulti-User – Systems can support more than – Systems can support more than one Userone User
Multi-TaskingMulti-Tasking – Can run more than one task – Can run more than one task or application at the same timeor application at the same time
Terms to know [2]Terms to know [2]
Multi-ProcessingMulti-Processing – Can support the use of – Can support the use of two or more CPUstwo or more CPUs
Multi-ThreadingMulti-Threading – OS manages Applications – OS manages Applications by loading only the elements it needsby loading only the elements it needs
Classes of OSClasses of OS
Desktop Operating SystemDesktop Operating System Windows 98Windows 98 Windows XPWindows XP FedoraFedora
Network Operating System [NOS]Network Operating System [NOS] Windows Server 2003Windows Server 2003 Red HatRed Hat Novell NetwareNovell Netware
Features of Desktop OSFeatures of Desktop OS
Supports Single UserSupports Single User
Runs Single User ApplicationsRuns Single User Applications
Shares Files, Folders and PeripheralsShares Files, Folders and Peripherals
Used on small NetworksUsed on small Networks
Features of a Network OSFeatures of a Network OS
Support for multiple UsersSupport for multiple Users
Runs multi-User ApplicationsRuns multi-User Applications
Robust, Redundant and Centralised SecurityRobust, Redundant and Centralised Security
Designed for large NetworksDesigned for large Networks
Comparing OS Comparing OS [Minimum Requirements][Minimum Requirements]
Features and Features and FunctionsFunctions
Desktop OSDesktop OS
Win XPWin XP
Network OSNetwork OS
Server 2003Server 2003User InterfaceUser Interface
User ManagementUser Management
File ManagementFile Management
SecuritySecurity
Hardware ControlHardware Control
Software ControlSoftware Control
