input output devices.ppt

8/19/2019 Input Output Devices.ppt

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©2003 The McGraw-Hill Companies

Student Learning Outcomes

(. !escri#e the three classes o" C!s and the three

classes o" !)!s that are aaila#le.

*. List and descri#e "ie t$pes o" "lash memor$

cards that are aaila#le "or electronic deicessuch as computers and cameras.


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Introduction

+n this chapter, well discuss arious input,

output, and storage deices designed to

meet the arious needs and li"est$les o"

people.

This chapter eplores the "eatures aaila#le

in these deices.


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What Peripheral Devices

Suit Your Needs?

Input DevicesInput Devices Output DevicesOutput Devices Storage DevicesStorage Devices


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5.1 Input Devices

• Input device captures information and translates it into a formthat can be processed and used by other parts of your computer.•Keyboards•Pointing devices•Game controllers•Scanners•Styluses•Microphones•Digital cameras•Web cams

p. 5.130 Fig. 5-1

Simet !oncepts Support !D"

#Overvie$ of Input Devices% and #Other &veryday Input

Devices%


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8/53©2003 The McGraw-Hill Companies

!pes o" Input Devices

p. 5.131 Fig. 5-2



Pointing Devices

• Pointing devices are mainly used to choose and entercommands

• Pointing devices tend to have PS+, connectors or

-S connectors• PS+, connector fits into a PS+, port/ $hich a small round

soc(et $ith small holes that fit the pins on the connector

• -S connectors fit into -S ports/ and these are small

rectangular openings on the bac( or front of your computer/or even on your (eyboard or monitor

p. 5.131 Fig. 5-2

Simet !oncepts Support !D" #Ports and !ables%



Pointing Devices

• 0arious pointing devices are available

• 'ypes of pointing devices"

• Mouse

•

Mechanical mouse•Optical mouse

•Wireless mouse

• 'rac(ball

•

'ouchpad• Pointing stic(

p. 5.132 & P. 5.133 Fig. 5-3 & Fig 5.4

Simet !oncepts Support !D" #Mice%



#ame $ontroller

• Game controllers are used mainly to play games

• 'ypes of gaming devices

• Gamepads

• 1oystic(s

• Gaming $heels

• 2orce feed

p. 5.134 Fig. 5-5



Speciali%ed Input Devices

• Other types of input devices include"

• Scanners

•

Styluses• Microphones

• Digital cameras

•

Web cams

p. 5.135 Fig. 5-6



Scanner

• Scanner is a light sensitive device that helps you

copy or capture images/ photos/ and art$or(

that e3ist on paper. 'ypes of scanners include"•2latbed

Simet !oncepts Support !D" #Scanners%



St!luses

• Stylus is an input device consisting of a thin

stic( that uses pressure to enter information

or to clic( and point

• Styluses are used $ith"•PD*s

•'ablet P!s

•Graphics tablets

p. 5.135 Fig. 5-6



&icrophones

• Microphones are used toinput audio

• 'hree main types of

microphones are"•Des(top microphones•4eadsets•Directional microphones

•

Speech recognition isincreasingly being included inapplication soft$are



Digital $ameras

• Digital cameras are used to"• Do$nload images to a computer• Post pictures to the Web•

Produce videos• 5esolution is measured in megapi3els• 4igher the resolution/ better the

image 6uality/ but the more e3pensivethe camera

Simet !oncepts Support !D" #Digital !ameras%



We' $ams

• Web cam is a video camera that

can be used to ta(e images for

uploading to the Web



5.( Output Devices

/ Output devices ta%e in"ormationwithin $our computer andpresent it to $ou in a "orm that

$ou can understand/ Main output deices

Monitors

rinters pea%ers

Simet !oncepts Support !D"

#Overvie$ of Output Devices%



)lat Panel Displa! Devices

• Devices $ith flat)panel displays

• 'ablet P!s

•

PD*s• !ellular phones

• Des(top computers



&onitors

/ C4Ts

/ 5lat-panel displa$s Gas plasma

LC! 6li7uid cr$stal displa$8/ assie matri

/ 9ctie matri Called T5T 6thin "ilm transistor8

eparate transistor "or eer$ piel

p. 5.137 Fig. 5-9

Simet !oncepts Support !D" #Monitors%



Screen al*

/ Screen size measured as a diagonal line across thescreen "rom corner to opposite corner

/ Resolution the num#er o" piels displa$ed on the

screen 6the higher the resolution, the closer togetherthe dots8

/ Pixels 6or picture element8 dots that ma%e up theimage on $our screen

/ Dot pitch is the distance #etween the centers o" apair o" li%e-colored piels

/ Refresh rate the speed with which a monitor redrawsthe image o" the screen, and is measured in hert:



Printers

/ +n%&et most popular

Ma%es images #$ "orcing droplets

through no::les

Top speed is 20 pages per minute

/ Laser

5orms images using an

electrostatic process

rints #etween 3 and 30 pages per

minute



Printers + $ont

/ 4esolution o" a printer is the

num#er o" dots per inch 6dpi8 it

produces.

/ Higher the resolution, #etter the

image, and usuall$ the more

costl$ the printer



Printers + $ont.

• Multifunction printer"

• Scan/ copy/ fa3/ and print

• !an be either in(7et or laser

• !ost less than buying

individual units

• 'a(e up less des( space

Simet !oncepts Support !D" #Printers%

p. 5.139 Fig. 5-11


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Spea*ers

• * speaker is a device thatproduces computer output assound

• Spea(ers are commondevices in computer systems&3amples include"

• uilt)in spea(er

• '$o)device set spea(ers

• Surround sound spea(ers


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I,$an- se a $omputer Without

Nec* and Shoulder Pain

/ Computer wor% can lead

to ph$sical pro#lems

/ ;rgonomics deals with

reducing discom"ort/ hould sit up straight at

$our computer

Simet !oncepts Support !D" #&rgonomics%


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sing Your $omputer-

/rgonomics and 0ealth

/ osition $our screen a#out the length o" $our

arm awa$ so that $ou loo% slightl$ down at it

/


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sing Your $omputer-

/rgonomics and 0ealth

/ tretch $our shoulders, #ac%, arms, and

wrists at least eer$ 30 minutes

/ tretch $our hands downward and #ac%ward

"re7uentl$

/ 9lwa$s listen to $our #od$ when it tells $ou

that $oure uncom"orta#le and do something

a#out it


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Storage &edium erms

=$te

>ilo#$te 6>=8 Mega#$tes 6M=8

Giga#$tes 6G=8

Tera#$tes 6T=8

eta#$te 6=8 ;a#$te 6;=8

? @ #its

A 1 Thousand =$tesA 1 Million =$tes

A 1 =illion =$tes

A 1 Trillion =$tes

A 1 7uadrillion =$tes

A 1 7uintillion =$tes


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&agnetic and Optical

Storage

p. 5.142 & 5.144 Fig. 5.13 & 5.16


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&agnetic Storage Devices-

Internal &agnetic 0ard Dis*

• Magnetic storage devices can be

either internal or e3ternal• Internal magnetic hard dis(s are

fi3ed inside the system unit

• &3ternal magnetic hard dis(s are

portable

Simet !oncepts Support !D" #5emovable Dis(s%


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Internal &agnetic 0ard Dis*

/ +nternal hard disk is a magneticstorage deice with/ Bne or more thin platters that store

in"ormation sealed inside the dis%drie.

/ 4eadwrite heads access thein"ormation on sur"ace

/ Heads read in"ormation while cop$ingit "rom dis% to 49M

/ Heads write in"ormation when cop$ingit "rom 49M to dis%


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/2ternal &agnetic 0ard Dis*

/ External hard disks are

magnetic storage media which

are porta#le storage units that

$ou can connect to $our

computer as necessar$

/ Great "or #ac%up storage deices

/ 9#ilit$ to transport $our hard dis%"rom one computer to another


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0ard Drives

/ Long term storage s$stem

and application so"tware

/ Bperating s$stem and

application so"tware arecopied "rom the hard dis%

to memor$

/ Capacit$ measured in

giga#$tes


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)lopp! Dis*s and 3ip Dis*s

/ 4emoa#le magnetic storage mediacome in two #asic t$pes Traditional "lopp$ dis%s

Dip dis%s/ These storage media are use"ul "or

toring "iles "or #ac%up or securit$purposes

Trans"erring "iles "rom one computer toanother


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4emova'le &agnetic

Storage- )lopp! Dis*

/ 5lopp$ M$lar dis%

Housed inside a hard plastic

casing

Thin, "lei#le plastic dis%/ 3.( inch "lopp$ dis%s

also called "loppies, dis%ettes,

"lopp$ dis%s

Holds a#out 1.'' mega#$tes o"

in"ormation/ High-capacit$ dis%s

DipE dis%

p. 5.144 Fig. 5.15


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4emova'le &agnetic

Storage- 3ip Dis*

/ High capacit$ plastic platter dis%

Called remoa#le hard dis%s

roide a higher storage capacit$ than M$lar

dis%s

/ ;ample - DipE dis% with capacit$ o" 100M=,

2(0M=, and F(0M=


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Optical Storage

/ C!s

/ !)!s

/ =oth are optical

storage and haethree "ormats

4ead-onl$

rite-once

4ead-and-write


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Optical Storage &edia

/ 4ead-Bnl$ C!-4BM

!)!-4BM

/ Bne-Time rita#le C!-4

!)!-4

!)!4

/ 5ull$ 4ead-and-rite

C!-4

!)!-4 or!)!4 or

!)!-49M

Simet !oncepts Support !D" #!Ds and D0Ds%


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)lash &emor! $ards

/ 5lash memor$ cards hae

high-capacit$ storage

laminated inside a small

piece o" plastic/ 5lash "lash memor$ cards do

not need a drie with moing

parts to operate


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)lash &emor! $ard 4eaders

/ ome deices hae "lash memor$ slotsinto which $ou slide $our "lash memor$card

/ Bther deices can use an eternal "lashmemor$ card reader in order to trans"erin"ormation

/ 9 "lash memor$ drie is a "lash memor$

storage medium "or a computer that issmall enough to "it in $our poc%et andusuall$ plugs directl$ into a I= port


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5. $onsumer 678

1. How Can + Tell How Man$ Megapiels M$Camera hould Hae to rint Good @

10 hotosJ2. hat T$pe o" Mouse hould + Get "orGamingJ

3. 9re 5lat anels and 5lat creens theame ThingJ

'. hat hould + loo% "or in a cannerJ


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5.5 9e! erms

/ Compact5lash card

/ !ot pitch

/ 5lash memor$ cards

/ 5lat-panel displa$

/ 5lopp$ dis%

/ Gamepad

/ Gaming wheel

/ Gas plasma displa$

monitor

/ Giga#$te

/ Hard dis% drie

/ +n%&et printer

/ +nput deice

/ Ko$stic%


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5.: 9e! erms

/ >ilo#$te

/ Laser printer

/ Li7uid cr$stal displa$monitor

/ Mega#$te

/ Memor$ tic% Media

/ Mouse

/ Multi"unction printer

/ MultiMediaCard

/ Butput deice

/ hoto in%&et printer

/ 4e"resh rate

/ 4esolution o" a

printer

/ 4esolution o" ascreen

/ canner


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4evie; o" $oncepts

1. tac%ing =$tes

+" a giga#$te were a tree, how high would it

#eJ2. Brgani:ing +nput and Butput !eices

0 d O P < t


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0ands On Pro


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0ands On Pro


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0ands On Pro


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0ands On Pro

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