Transcript Chapter 1: Field Guide to Identifying Computers in the Wild

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