Computer Everywhere

8/2/2019 Computer Everywhere

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A computer is anelectronic machine thatcan accept data,

perform certainoperations to solve

problems, and presentresults in anunderstandable format.

omputers

Everywhere


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A computer contains manyelectronic and mechanical

components known a hardware. Thesecomponents include input devices,output devices, system units,storage devices, andcommunicationdevices.

ComputerHardware


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An input devices allows you to enterdata or instructions into the computer.The keyboard, mouse, microphone,scanner digital camera, and PC videocamera are all input devices.

InputDevices


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A keyboard contains keys you press toenter data into the computer.

A keyboard is a set of buttons that sendcoded signals to a computer, printer, orcommunications channel. Each button, orkey, corresponds to one or more letters,numbers, symbols, or special commands.

Keyboar

d


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Computer Mouse (Mice) is a smallhandheld device. With a mouse youcontrol the movement of a small symbolon the screen called the pointer and you

make selections.

computer uses a mouse or other pointing

device to follow the movement of yourhand, and convert that motion into

Mous

e


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Amicrophone allows you to speakto the computer to enter data andinstructions.

Microphon

e


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A scanner converts printed materials,such as documents and pictures, into a

form the computer can use. For example,you can scan a picture and place it in aword document.

Scanne

r


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A digital camera, you can take

pictures and then transfer them tothe computer or print them. There isno need to store the images ontraditional film.

DigitalCamera


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APC video camera is a digital videocamera that allows you to create a movieor take still photographs

electronically. With a PC web camera,which you attach to your computer, youcan see your friend as you communicate

with each other on the internet.

PC Video

Camera


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An output device is any hardware thatconveys information to one or morepeople. Three commonly used output aretheprinter,monitor, andspeakers.

Output

Devices


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A printer produces texts and graphics onpaper.

Print

er


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A monitor displays texts, graphics, andvideos on its screen.

Monit

orLCD (Liquid Crystal Display)

LCD / Flat-panel monitors is a digitaldevice that use backlit liquid crystal

technology to produce images on atransparent plastic screen.

CRT (Cathode Ray Tubes)

CRT monitors are analog devices that use acontinuous stream of electrons to create animage on the screen. That means that yourgraphics card must convert the computer'sdigital signal into a signal that the CRTmonitor can understand.


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Aspeakers allow you to hear music,and other sounds.

Speake

rs


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A computer keepsdata,

instructions,and informationon storage

media.

Types of storagemedia:

Diskettes

USB flash

drives

Storage

Media


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A communication device is a hardware

component that enables a computer tosend a receive data, instructions, andinstructions and information to andfrom one or more computers. A widelyused communication device is themodem.

Communication

Devices

Computer Everywhere

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