computer literacy chapter 5: defining the role of the operating system chapter 5: defining the role...
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Computer Literacy Chapter 5: Defining the Role of the Operating System
Chapter 5:Defining the Role of
the Operating System
Computer Literacy
Computer Literacy Chapter 3: How to Speak Geekand Make Informed Purchasing Decisions
Introduction
• _________ System Functions• Capabilities and Limitations of an
OS• Common OS Problems and Their
Solutions
Computer Literacy Chapter 5: Defining the Role of the Operating System
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 _________
• Graphical interface
• Command-line interface as well
• Windows 9x• Windows NT• Windows 2000• Windows XP• Windows Vista• Windows 7
• Microsoft released Windows 95 in 1995 to replace DOS and Windows 3.11; later released Windows 98, 98 SE, and Millennium Edition (Me).
• In their “professional” line of operating systems, Microsoft released Windows NT, 2000, XP Home, XP Professional, Media Center, numerous Server versions.
• Current offerings include 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 3: How to Speak Geekand Make Informed Purchasing Decisions
Summary
• Operating System Functions• Capabilities and Limitations of an
OS• Common OS Problems and Their
Solutions