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Computer Basics

COMPUTER BASICS

Welcome! 
Computer Basics is an introduction to personal computers, the Windows operating system, and Windows-based programs (if you don’t know what any of that means, don’t worry . . . you soon will!).  

Some Basic Terms Defined

Hardware is the physical parts of a computer system that you can see and touch.  Besides the main box of the computer (called the CPU, or Central Processing Unit), hardware also includes input devices, such as the keyboard and mouse, and output devices like the monitor and printer.


Software is the electronic instructions that tell the computer what to do.  Software often comes pre-loaded on your computer’s hard drive, or it can be purchased and installed by the user.  The software that runs the computer is called the operating system – typically a version of Microsoft Windows.  Other software programs, called applications, help you accomplish specific tasks like word processing or viewing the Internet.

Types of Computers

Windows-based PC
Various companies including Dell, Gateway, and Hewlett-Packard manufacture these computers, but they all have one thing in common – they’re designed to run the Microsoft Windows operating system.  Applications for these computers must be Windows-compatible.  The processor (the “brain” of the computer) is typically an Intel Pentium.

Apple Macintosh
These computers are manufactured exclusively by Apple.  They run
a different operating system called the Mac OS.  Applications, of course, must be Mac OS-compatible.  The processor inside these computers is typically a G4.

Once Upon A Time . . .
     We interacted with the first home computers through a primitive system called DOS.  The user typed a command at the prompt to tell DOS what to do – making it necessary to remember scores of command words.  The world wanted something easier!
     Then along came the GUIs (graphical user interfaces) – colorful new programs which allowed the user to point and click instead of remembering command words.  Microsoft Windows and Apple’s Mac OS are the most popular GUIs.

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