A Guide To Basic Computer Terminology
Cache: Cache is another type of memory kindred to RAM. The computer uses cache
to quickly move data between the RAM and the CPU.
CD-ROM Drive: Most new computers now come with a CD-ROM drive as standard
equipment. A CD-ROM drive reads data from a disc. These CDs look like a music
CD, but hold data instead of music. CD-ROMs also contain games, dictionaries,
recipe files, and lots of other things that you can load onto your computer.
CPU: The CPU, or central processing unit, is the brains of the computer. Most
new Windows based programs use a Pentium processor or a AMD Athlon XP. New Macs
use a different type of CPU called Power PC.
Disk Drive: Virtually all computers come with a disk drive that can read and save
information on portable diskettes, also called floppy disks. You can use floppy
disks to save information or to load new software onto your computer.
Hard Drive: The hard drive is also called the hard disk. You'll probably never
see it because it is nestled inside your computer. It's the computer's
electronic filling cabinet, and it stores the computer's operating system,
files, programs and documents.
Keyboard: Just like a typewriter keyboard, this device is the primary way of
inputting data into the computer programs.
Megahertz (MHz): This is the clock speed of the microprocessor. The higher the
number, the quicker the information is processed. MHz relates to how many
millions of instructions can be processed per second.
Memory: This is the circuitry or device that holds information in an electrical
or magnetic form. There is read-only memory (ROM), which is information
primarily stored on a disk, and random-access memory (RAM), which is chip-based
storage inside the computer. Memory is typically measured in megabytes (MBs).
Modem: This mechanism connects a computer to a phone line so information can be
sent from one computer to another or the user can access an on-line service or
the Internet. In view of the popularity of the Internet, a modem is now
considered basic equipment and comes on practically all-new computers. Most
modems come with fax capabilities.
Monitor: An output device that allows you to see what you are doing (it is what
you are looking into right now to see this). Most computers come with 14 or
15-inch monitors. This size is good for most people's needs. Larger 17 or
21-inch monitors also are available, but may cost more. Myself, I prefer the
Motherboard: The motherboard is the circuit board that everything in the computer
plugs into. The CPU, RAM and cache all plug into the motherboard.
Mouse: The mouse is another input device that makes getting around in your
computer easier. It is a handheld object that is good for doing tasks such as
moving and pointing to objects on the screen, and can replace the function and
control keys of the keyboard. (If you need a lesson on how the mouse works and
how to use it click here for a tutorial.)
Printer: A printer is an essential part of the computer if you want a hard copy
of your work. There are four types of printers on the market: dot matrix,
inkjet, bubble jet and laser. The dot matrix is the most basic. Most inkjets and
bubble jets can print color and graphics, and a laser printer offers the best
resolution at the highest speed.
RAM: Computers save data in two ways: on the hard drive and in random access
memory or internal memory. New computer buyers should look for models with at
least 16 MBs of RAM (or more, depending on what types of programs you'll be
running). Make sure that the computer can be upgraded.
Scanner: A scanner is a useful accessory to have if you are working with lots of
artwork or photos. This device can copy written documents, pictures or
photographs directly into your computer. There are three types of scanners:
handheld, hopper-feed and flatbed.
Sound Card: This device allows your computer to reproduce music, sounds and
voices. Make sure you have a sound card if you're planning to play multimedia
Video Card: The video card is the part of the computer that sends the images to
Author : B. Archer