Computer Operating Systems

Technology Concepts

Banks High School

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Operating Systems

• Allow you to customize your machine, and make changes to it’s settings– Before operating systems, everything on the

system was hardwired, and could not change anything!

– Had to buy a completely new machine to add features

• An operating system controls the system resources of the computer.

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Operating Systems

• Without an operating system, the computer is useless!– Check to see if you have an installation cd before

formatting your hard drive.• Now found on smaller devices

– Cell phones• Store photos• Play games• Organize dates

– Palm Pilots• Mini-Computer

– GPS• Track other people

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Operating Systems

• Common Features of current operating systems– Clipboard

• Copy, Cut, Paste• Print Screen

– Drivers• Allows software to run correctly

– Registry• Tracks all changes made to the computer

– Control Panel• Many settings on the computer can be manipulated

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Operating Systems

• There are many different types of Operating Systems– CLUI – Command Line User Interface– GUI – Graphic User Interface– Multi-User – Many users can use at the same

or at a different time– Multi-Processor – System can use multiple

processors simultaneously

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Examples of Operating Systems

• MS-DOS – Command Line User Interface

• MacOS – (GUI)

• Linux – (GUI & CLUI)

• Windows – Graphic User Interface (GUI)

Picture (Screenshot)

Picture (Screenshot)

Picture (Screenshot)

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MS-DOS

• Microsoft DOS (Disk Operating System)– A command line user interface.

• MS-DOS 1.0 released in 1981 for IBM computers • Latest version of MS-DOS

– MS-DOS 6.22, released in 1994.

– MS-DOS is not commonly used by itself today, but still can be accessed from every version of Microsoft Windows.

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Command Line Interface

• C:\> typical command line prompt

• Commands– {cd.. } {dir} {copy} {del} {c:}– C:\>dir tells you the contents of the

c: directory– C:\>cd windows Changes to the windows

directory– C:\windows>win.exe will run that executable

file

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GUI (Graphic User Interface)

Operating Systems• Allow you to use images to navigate through

computer, and by the click of the mouse, information from the computer can be manipulated.

• Allows you to customize many settings of computer, especially the way that your computer looks, and runs.

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GUI (Graphic User Interface)

Pro’s• Simplifies Interface• Don’t need to know

syntax• More Capabilities• Can run multiple

software programs simultaneously

Con’s• Cost !!!

– Developers– Artists– Programmers

• Bog’s down system resources

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The Clipboard

• An area of space reserved for temporary storage of information.

– Copy – cntl C– Cut – cntl X– Paste – cntl V– Print Screen – alt Prnt Scrn

• Can store images, text, or files until a new item is placed on the clipboard.

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Drivers

Installing Software• Drivers allow software to run correctly. When you install a program onto your computer, drivers are installed.

• Missing drivers = program will not run

• Prevents software from being “stolen”

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The Registry

What is the Registry? “The Registry is a database used to store

settings and options… It contains information and settings for all the hardware, software, users, and preferences of the PC.

Whenever a user makes changes to a Control Panel settings, or File Associations, System Policies, or installed software, the changes are reflected and stored in the Registry.”

www.winguides.com

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GUI (Graphic User Interface)

Conclusion• If you can afford it - Use it!

– Because of updates and future technologies• The best software does not always win

– Software companies will follow the money• Microsoft has billions in assets and employees• Most software companies make products that are

compatible with current versions of Microsoft OS’s

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