Computer Hardware- Peripherals -

Peripheral Device

External hardware devices attached to the computer are called peripheral devices

There are three types of peripheral devices :Input devicesOutput devicesStorage devices

Input DevicesInput devices are any electronic device that

are connected to a computer and produces input signals such audio, text, video, graphic.

MicrophoneAUDIO

Handy Cam / Vedio CameraVIDEO

Digital CameraGRAPHIC

KeyboardTEXT

ScannerTEXT / GRAPHIC

Barcode ScannerTEXT

Web CamVIDEO / GRAPHIC

Pen or HandheldTEXT

Card ReaderTEXT

Name : Graphic TabletCategory : Input DevicePointing Device

Name : Keyboard Category : Input DeviceUsed for : Input TextFunction : A set of keys used to operate a typewriter

Name : Barcode Reader

Category : Input Device

Use for : Input Text

Name : Scanner

Category : Input Device

Used for : Input Text &Graphic

Function: scanner is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image.

Name : Video Digital Camera

Category : Input Device

Used for : Input Video

Name : Web camCategory : Input DeviceUsed for : Input Video

Name : CCTV

Category : Input Device

Used for : Video

Output DevicesOutput is the result of data processing

activity when it is presented externally to the system. The output from a computer can be printed or displayed form .

An output device is hardware that is capable of delivering or showing information to one or more users. An output device shows, prints and presents the results of a computer’s work.

Printer-is a computer peripheral which produces a hard copy (text, graphic)

Monitor-A display device consists of a screen and the components that produce the information on the screen

LCD projector is a type of video projector for displaying video, graphic or computer data on a screen or other flat surface

CENTER

LEFTSURROUND

RIGHTSURROUND

SUBWOOFER LEFTRIGHT

PRODUCE AUDIO OUTPUT

Storage DevicesInformation and documents are stored in a

computer storage so that it can be retrieved whenever they are needed later on.

Computer storage is the holding of data in an electromagnetic form for access by a computer processor.

RAM ROMStore during and after processing DATA AND

PROGRAM

Store by manufacturer

Store information temporary CONTENT

Store instructions permanently

Very fast, but uses a lot of power PROCESSING

TIME

Fast, but uses very little power

VolatilityVALATILE

Non- volatile

The End- Q & A -