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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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!pes o" Input Devices
p. 5.131 Fig. 5-2
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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%
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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%
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#ame $ontroller
• Game controllers are used mainly to play games
• 'ypes of gaming devices
• Gamepads
• 1oystic(s
• Gaming $heels
• 2orce feed
p. 5.134 Fig. 5-5
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Speciali%ed Input Devices
• Other types of input devices include"
• Scanners
•
Styluses• Microphones
• Digital cameras
•
Web cams
p. 5.135 Fig. 5-6
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Scanner
• Scanner is a light sensitive device that helps you
copy or capture images/ photos/ and art$or(
that e3ist on paper. 'ypes of scanners include"•2latbed
Simet !oncepts Support !D" #Scanners%
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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 $ith"•PD*s
•'ablet P!s
•Graphics tablets
p. 5.135 Fig. 5-6
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&icrophones
• Microphones are used toinput audio
• 'hree main types of
microphones are"•Des(top microphones•4eadsets•Directional microphones
•
Speech recognition isincreasingly being included inapplication soft$are
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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%
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We' $ams
• Web cam is a video camera that
can be used to ta(e images for
uploading to the Web
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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%
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)lat Panel Displa! Devices
• Devices $ith flat)panel displays
• 'ablet P!s
•
PD*s• !ellular phones
• Des(top computers
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&onitors
/ C4Ts
/ 5lat-panel displa$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%
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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 $our screen
/ Dot pitch is the distance #etween the centers o" apair o" li%e-colored piels
/ Refresh rate the speed with which a monitor redrawsthe image o" the screen, and is measured in hert:
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Printers
/ +n%&et most popular
Ma%es images #$ "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
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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
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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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&agnetic Storage Devices-
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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&agnetic Storage Devices-
/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