Read this whole guide offline with no ads, for a very low price!
Click Here!
Use coupon code "SAVE50" to get it half price!

Custom Search







Table Of Contents  CertiGuide to A+ (Operating Systems)
 9  Chapter 0000:  How to Get There
      9  II  How Operating Systems Work

Previous Topic/Section
Anatomy of an OS
Previous Page
Pages in Current Topic/Section
1
Next Page
Operating Systems for the A+ Certification Test
Next Topic/Section

Defining the Operating System

An Operating System (OS) is a collection of special programs running on your computer, which sits between the computer hardware, which you learned about in A+ Core, and application (task-oriented) programs such as word processors, Internet browsers, email programs and spreadsheets.

The Operating System is the set of utility functions and programs that make it possible for applications to access your computer hardware, and for you to manage the use of your applications and the hardware.

Because it must perform many hardware-specific functions, an Operating System is specific to the type of computer on which it will be run.

For example, there are Operating Systems which run on standard PC's, with Intel or AMD processors, and motherboards with PCI or ISA slots.

There are also Operating Systems for Macintosh computers, and other Operating Systems for larger mini-computers and mainframes.

Some Operating Systems like Linux are available for multiple different types of computers. However, it is more common for an Operating System to be associated with a certain type of computer. For example, Intel and AMD CPU-based PC's generally run some version of Windows.

Figure 1: Intermediary Operating System

 


A+ Focus

The A+ test focuses on standard PC architecture.



Previous Topic/Section
Anatomy of an OS
Previous Page
Pages in Current Topic/Section
1
Next Page
Operating Systems for the A+ Certification Test
Next Topic/Section

If you find CertiGuide.com useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider buying an inexpensive PDF equivalent of the CertiGuide to A+ (Operating Systems) from StudyExam4Less.com. (Use coupon code "SAVE50" to save a full 50% off the already low price!) Thanks for your support!
Donate $2
Donate $5
Donate $10
Donate $20
Donate $30
Donate: $



Home - Table Of Contents - Contact Us

CertiGuide to A+ (Operating Systems) (http://www.CertiGuide.com/apluso/) on CertiGuide.com
Version 1.0 - Version Date: January 7, 2005

Adapted with permission from a work created by Tcat Houser.
CertiGuide.com Version Copyright 2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.