parts o fthe computer hardware

8/12/2019 Parts o Fthe Computer HARDWARE

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Equipment (Hardware)http://www.kids-online.net/learn/clickjr/clickjr.html

COMPUTER A machine that processes information and performs computations.

TowerorDesktop The "box" or case that holds the parts that make up a computer: CPU, hard

disk drive, floppy drive, memory chips, power supply, interface cards, etc.

CPU Central Processing Unit, or "brains" of the computer

MonitorAn output display device (looks similar to a TV) in a computer system. You

see information on the monitor's screen.

Screen The viewing area on a monitor or the information or image displayed.

Disk Drive A device that reads data from (input) or records data onto a disk for storage (output).

Floppy

Floppy Drive

.3-1/2" Floppy Disk

Hard Drive The main device that a computer uses to store information. Most computers come with a hard drive, called drive C, located

inside the computer case.

CD-ROM ROM means Read-Only-Memory - you can only "read" information, not save. A CD can store a large amount of data

including documents, photographs, software, and music (about 20 songs)

CD DriveCompact Disk

CD-R

A CD-Recordable drive can put data onto a disk in just one

session, and then is "closed" - one "burn" only - you can't add

to it after you create it.

CD-RW

A CD-ReWritable drive can be written onto more than once -

similar to a floppy or hard disk.

DVD-ROM Digital Video Disk - Read-Only Memory Used to store full-length movies, large programs, etc.

CD's, CD-R's, CD-RW's, and DVD'sall look the same.You must read the label to determine what type of media it is. Both CD's and DVD's are optical storage media. Optical technology uses a

laser or light beam to process information.

USB Flash

Drive These can hold documents, pictures, and music. Some flash

drives are also MP3 players.
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Mouse A hand-held input device you roll on your desk to point to and select items on your screen. When you move the mouse, the

mouse pointer on the screen moves in the same direction.

Mouse

pointer

The little symbol on your screen that you move with your mouse. You use the mouse pointer to point to and select items on

your screen. The mouse pointer changes shape, depending on its location on your screen and the action you are performing.

Left Mouse Button - usually use this button

Right Mouse Button - occasionally use this button for "special" actions

Scroll Wheel - the mouse wheel may work differently from program to program. and it may not work in some programs. In

most word processing programs, you can rotate the wheel to move up or down the page, equivalent to using the PAGE UP

or PAGE DOWN keys on your keyboard or to clicking the scroll bar. Due to various problems it is best if you do not use the

scroll wheel in the computer lab.

Click Press and quickly release the button on a mouse

Double Click Press and quickly release the mouse button twice.

Drag Move objects or data around on the screen through the use of a mouse. Keep the left mouse button pressed while you move

the mouse.

Speakers Output device that produces sound and music when connected to the

computer. Speakers come in different shapes and may even be in the

monitor's case.

Headphones

Output device for listening that is held over the ears by a band worn on the

head

Microphone

Input device in which sound energy is changed into electrical energy for

the sending or recording sound (your voice).

Scanner

Input device that reads copy as an image and digitally records the image


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Digital

CameraRecords and stores images as a digital file, operates similarly to a "normal"

camera, but no "film" is needed

ProjectorOutput device for displaying onto a large surface (projection screen) what

appears on the computer monitor.

Printer

A device that produces a paper copy of the information on your screen. The printer on the left is an INK JET PRINTER, and

the other is a LASER PRINTER.

Hub

Hubs are devices that have many ports into which network cables are plugged. A hub takes the signal from each computerand sends it to all of the other computers through the network. Hubs come in different sizes and colors. The hub must beplugged in and turned on for the network to work - be sure you see green lights

Modem A device that allows computers to communicate with each other over telephone lines (Internet).
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