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Chapter 5: Defining the Role of the Operating System Computer Literacy Chapter 5: Defining the Role of the Operating System Introduction • _________ System Functions • Capabilities and Limitations of an OS • Common OS Problems and Their Solutions Computer Literacy Chapter 3: How to Speak Geek and Make Informed Purchasing Decisions Operating System Functions • • • • Create and maintain user _________ Manage system __________ _________ and maintain files Act as a _______ between applications and hardware • Provide ________ Computer Literacy Chapter 5: Defining the Role of the Operating System Create the User Interface • On-screen ________ and objects that enable you to ________ with the computer Computer Literacy Chapter 5: Defining the Role of the Operating System Create the User Interface • On-screen prompts and objects that enable you to interact with the computer • The _________ to everything the computer offers Computer Literacy Chapter 5: Defining the Role of the Operating System Manage System Hardware • BIOS for core hardware • Software programs (device drivers) for other hardware – Software for additional hardware comes on driver discs or via downloads from the Web. Computer Literacy Chapter 5: Defining the Role of the Operating System Organize and Maintain Files • Files-Files go in folders on mass storage devices. – File types • File extensions (i.e. .doc, .jpg, .html) – Files go in folders on mass storage devices and what program to open to edit that file, like Word to open a .DOCX file • Unique icons • Folders Computer Literacy Chapter 5: Defining the Role of the Operating System Bridge the Hardware and Applications • Operating system enables applications to ____________ with hardware • “Program support” Computer Literacy Chapter 5: Defining the Role of the Operating System Capabilities and Limitations of an OS • ___-based • __________-based Computer Literacy Chapter 5: Defining the Role of the Operating System Character-based User Interface • Prompt: c:\> • Type commands: c:\>dir • Press [Enter] to make the commands go – You need to know the commands or names of executable (program) files for the command line to work properly. Computer Literacy Chapter 5: Defining the Role of the Operating System Graphical User Interface • Point and click on icons • Just like typing a command • To the computer, it’s the same thing! Computer Literacy Chapter 5: Defining the Role of the Operating System Major _________ Systems • Command-line – DOS – Linux – UNIX • GUI – Windows – Macintosh OS X – Linux – UNIX Computer Literacy Chapter 5: Defining the Role of the Operating System Microsoft _________ • Microsoft released Windows 95 • Graphical interface in 1995 to replace DOS and • Command-line Windows 3.11; later released Windows 98, 98 SE, and interface as well Millennium Edition (Me). • Windows 9x • In their “professional” line of • Windows NT operating systems, Microsoft released Windows NT, 2000, • Windows 2000 XP Home, XP Professional, • Windows XP Media Center, numerous • Windows Vista Server versions. • Current offerings include • Windows 7 Windows Vista and Windows 7. Computer Literacy Chapter 5: Defining the Role of the Operating System Apple __________ • Currently at OS X (ten, not ex) • Graphical interface • Command-line interface as well Computer Literacy Chapter 5: Defining the Role of the Operating System UNIX and _____ • Command-line interface • Graphical (overlay) interface Computer Literacy Chapter 5: Defining the Role of the Operating System ________ Operating Systems • Smartphones • PDAs • Portable video and music players • e-book readers Computer Literacy Chapter 5: Defining the Role of the Operating System OS Limitations • Software support – Programs work for only one OS – Most programs written for Windows • Hardware support – Most hardware today works for Windows and Linux – Macintosh somewhat proprietary • Some hardware can connect to Windows, Macs, and Linux computers, particularly those using more universal ports like USB and FireWire. LCD monitors and speakers of all sorts work on all three OSs as well. • Case sensitivity-Windows is case aware, but not case sensitive on anything but passwords. Linux and Macs are case sensitive. Computer Literacy Chapter 5: Defining the Role of the Operating System Common OS ____________ • _____________ – – – – System runs slowly System locks up Blue screen of death Computer starts in Safe mode Computer Literacy Chapter 5: Defining the Role of the Operating System Common OS Problems • ______ Instability – Drive _________ • Go to Computer, right-click the drive, select Properties • In Properties, select Tools tab then click Check Now Computer Literacy Chapter 5: Defining the Role of the Operating System Common OS Problems • Instability caused by ________________ – Computer runs slowly – Computer accesses hard drive frequently – Fix by defragmenting the disk, or “defrag” Computer Literacy Chapter 5: Defining the Role of the Operating System Common OS Problems Computer Literacy Chapter 5: Defining the Role of the Operating System Common OS Problems • Failure to ______ – Safe Mode – System Restore Computer Literacy Chapter 5: Defining the Role of the Operating System Common OS Problems • Access ________ – Check [Caps Lock] key – You may not have the proper permissions (standard vs. administrator account) – Try again, carefully Computer Literacy Chapter 5: Defining the Role of the Operating System Summary • Operating System Functions • Capabilities and Limitations of an OS • Common OS Problems and Their Solutions Computer Literacy Chapter 3: How to Speak Geek and Make Informed Purchasing Decisions