MELJUN CORTES Hardware

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Chapter 5Input andOutput



Today

We will be discussing :• 23 different types of input devices

• 10 output devices

• 5 combined devices

How many can you name?



What Is Input?

What is input?

p. 166 Fig. 5-1 e!t

"nput device is any hardware component used to

enter data or instructions into a computer

#ata or instructions entered into the memory of

computer



Keyboard and Pointing Devices

1$ What is a %eyboard?

p. 168 Fig. 5-2 e!t

"nput device that contains

%eys users press to enter

data into a computer

"ncludes typing area&numeric %eypad& and

function %eys 'an be cordless or

built(in




What is a mouse?

p. 169 Fig. 5-3a e!t

)ointing device that fits under the palm of your hand

Pointing device controls

movement of pointer, also

called the pointer

2$ *echanical mouse

has rubber or metal

ball on its underside

mouse buttonswheelbutton

mouse pad

ball

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3$ What is an optical mouse?

p. 169 Fig. 5-3b e!t

o moving mechanical

parts inside +enses light to detect

mouse,s movement *ore precise than

mechanical mouse *ore e!pensive

than amechanical mouse




-$ What is a trac%ball?

p. 1%& Fig. 5-' e!t

+tationary pointing device

with a ball on its top or side .o move pointer& rotate ball

with thumb& fingers& or palm

of hand




What are a touchpad and a

pointing stic% ?

p. 1%& Fig$. 5-5(5-6 e!t

5$ .ouchpad is small& flat&

rectangular pointing device

sensitive to pressure and motion /$ )ointing stic% is pointing

device shaped li%e pencil eraser

positioned between %eys on

%eyboard




What are a oystic% and a wheel?

p. 1%1 Fig. 5-% e!t

$ oystic% is vertical lever mounted on a base $ Wheel is steering(wheel(type input device

Pedal simulates

car brakes and accelerator




4$ What is a light pen?

p. 1%1 Fig. 5-8 e!t

Handheld input device

that can detect the

presence of light

Press light pen against

screen surface and then

press button on pen




10$ What is a touch screen?

p. 1%1 Fig. 5-9 e!t

.ouch areas of screen with

finger ften used with %ios%s




11$ What is a stylus and a digital pen?

p. 1%2 Fig. 5-1& e!t

6oo%s li%e a ballpoint pen& but uses pressure to write

te!t and draw lines

7sed with graphics tablets, flat electronic boards

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Other Input Devices

What is voice input?

12$ 8ntering data by spea%ing into a microphone

9oice recognition or speech recognition is the

computer,s capability to distinguish spo%en words

p. 1%3 e!t

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Other Input Devices

p. 1%3 Fig. 5-13 e!t

What is audio input?

13$ 8ntering sounds into a computer ( speech&

music& and sound effects using the electronic

%eyboard

*"#" ( standard defining how digital musicaldevices represent sound electronically



Other Input Devices

1-$ What is a digital camera?

p. 1%5 Fig. 5-16 e!t

llows you to ta%e

digital pictures "mages viewable

immediately on

camera

Download to

computer

Post pictures

to Web



Other Input Devices

15& 1/$What are a )' video camera and a Web cam?

p. 1%6 Fig. 5-1% e!t

)' video camerac ; c#9 camera used to capture video

and still images& and to ma%e

video telephone calls on "nternet Also called )' camera

Web camc ; cvideo camera

that displays its output on a

Web page



Other Input Devices

What is video conferencing?

p. 1%6 Fig. 5-18 e!t

.wo or more geographically separated people

who use networ% on "nternet to transmit

audio and video data



Other Input Devices

1$ What is a scanner?

p. 1%% Fig. 5-19 e!t

6ight(sensing device that reads printed te!t and

graphics

Used for image processing, converting paper

documents into electronic images

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Other Input Devices

What is an optical reader?

p. 1%% Fig. 5-21 e!t

1$ ptical character

recognition <'=$ reads

characters in OCR font

14$ ptical mar% recognition

<*=$ reads handdrawn

pencil marks, such as small

circles

20$ >ar code reader

#evice that uses light source to read characters& mar%s&

and codes and then converts them into digital data



Other Input Devices

What is a turnaround document?

p. 1%% Fig. 5-2& e!t

#ocument that you

return to the company

that sent it

Portion !ou return has

information printed in

OCR characters



Other Input Devices

21$ What is a magnetic stripe card reader?

p. 1%9 Fig. 5-23 e!t

=eads the magnetic

stripe on the bac% of a

credit card 8!posure to a magnetic

field can erase the

contents of a card,s

magnetic stripe



22$ What is a magnetic(in% character recognition

<*"'=$ reader?

Other Input Devices

p. 1%9 Fig. 5-2' e!t

'an read te!t printed with magnetied in% >an%ing industry almost e!clusively uses *"'=

for chec%

processing



Other Input Devices

What is biometrics?

p. 181 Fig. 5-2% e!t

uthenticates person,s identity by

verifying a personal characteristic

23$ @ingerprint scanner captures

curves and indentations of

fingerprint

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Other Input Devices

What are e!amples of biometric technology?

p. 181 Fig. 5-28 e!t

9oice verification system compares live

speech with stored voice pattern

+ignature verification system recognies

shape of signature "ris recognition system reads

patterns in blood vessels in bac%

of eye

"iometric data is sometimes storedon smart card, which stores

personal data on microprocessor

embedded in card

N i t d i ll d I t t



New input devices called Internetwearables! or s"art clothing#!"t is predicted that in 10 years& people will be able to wear "nternet devicesA

#$ %mall input devices &ewlettPackard is developing that use 'nternettechnolog! to monitor blood sugar and cholesterol$

($ Researchers at )'* have introduced an input device that looks like a

brooch and, in con+unction with the 'nternet, someda! will be able to

monitor heart rate and bod! temperature$

$ Uniforms with sewnin sensors that report the location and condition ofwounded soldiers$

-$ &earing aids that let business people tap into and receive information

from compan! intranets$

.$ /lasses that allow wearers to access and view pages on the World Wide

Web$

How do you feel about this technology?



What is Output?

What is output?

p. 182 Fig. 5-29 e!t

#ata that has been processed into a useful form&

called information utput device is an! hardware component that can conve!

information to one or more people



Today

ame the output devices you have usedA



Display Devices

1$ What is an 6'# monitor?

p. 18' Fig. 5-3& e!t

7ses liBuid crystal display Have a small footprint *obile devices that contain

6'# displays include oteboo% computer&

.ablet )'& )#& and

+mart )hone

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Display Devices

2$ What is a plasma monitor?

p. 185 Fig. 5-32 0e1t

#isplays image by applying voltage to layer of gas

6arger screen sie and higher display Buality than 6'#& but

are more e!pensive



Display Devices

3$ What is a '=. monitor?

p. 186 Fig. 5-33 e!t

'ontains cathode(ray

tube <'=.$ 'ommon sies are 15& 1&

14& 21& and 22 inches

9iewable sie is diagonal

measurement of actual

viewing area

i



Printers

What is a nonimpact printer?

p. 189 Fig. 5-36 e!t

@orms characters and graphics without stri%ing paper

-$ "n%(et printer sprays tiny drops of liquid ink

onto paper )rints in blac%(and(white or color on a variety

of paper types

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P i



Printers

5$ What is a photo printer?

p. 19& Fig. 5-3% e!t

'olor printer that produces photo(lab(Buality pictures *any photo printers have a built(in card slot

P i



Printers

/$ What is a laser printer?

p. 19& Fig. 5-38 e!t

High(speed& high(Buality

nonimpact printer )rints te!t and graphics in very

high(Buality resolution&

ranging from 1&200 to 2&-00 dpi .ypically costs more than

in%(et printer& but is much

faster

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P i t



Printers

$ What is a plotter?

p. 192 Fig. 5-'1 e!t

+ophisticated printer used to produce high(Buality

drawings 6arge(format printer creates photo(realistic(Buality

color prints

Oth O t t D i



Other Output Devices

What is an audio output device?

p. 193 Fig. 5-'3 e!t

'omputer component that produces music& speech& or

other sounds

&4$ +pea%ers and headsets are common devices

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Oth O t t D i



Other Output Devices

10$ What is a data proector?

p. 195 Fig. 5-'6 e!t

#evice that ta%es image from computer screen

and proects it onto larger screen

Co"bined Input and output



Co"bined Input and outputdevices How many can you name?

Co"bined Input and Output



Co"bined Input and OutputDevices1$ What is a smart phone?

p. 1%5 e!t

7sers can input and send te!t messages& graphics&

pictures& video clips& and sound files




Co"bined Input and OutputDevices2$ What is a facsimile <fa!$ machine?

p. 19' Fig. 5-'' e!t

#evice that transmits and receives documents over

telephone lines

What is a fa! modem? *odem that allows you to send and receive electronic

documents as fa!es




Co"bined Input and OutputDevices3$ What is a multifunction peripheral?

p. 19' Fig. 5-'5 e!t

)rovides functionality

of printer& scanner&

copy machine& and

fa! machine




Co"bined Input and OutputDevices-$ What is a point of sale <)+$ terminal?

p. 18& Fig. 5-25 e!t

=ecords purchases&

processes credit or

debit cards& and

updates inventory




Co"bined Input and OutputDevices5$ What is an automated teller machine <.*$?

p. 18& Fig. 5-26 e!t

+elf(service ban%ing machine that connects to a host

computer through a networ%



*he "ureau of 2abor %tatistics reports that workrelated

musculoskeletal disorders 3)%Ds4 account for onethird of alloccupational in+uries and illnesses$ *hese disorders are the

largest +obrelated in+ur! and illness problem in the United

%tates toda!$

Whose responsibility is safe computer usage ; the employee or

the employer?

Analysts predict electronic books will revolutionize the publishing industry. An electronic book primarily is a digital storage and diwith some traits of traditional books, you can move forward or backward one page at a time, or use a stylus to write notes in the



Anal!sts predict electronic books will revolutioni5e the publishing industr!$ An

electronic book primaril! is a digital storage and displa! unit$ *he! range insi5e and weight from a paperback to a twopound te1tbook and can hold

thousands of pages or the e6uivalent of ten or more books$ 7ou can move

forward or backward one page at a time, or use a st!lus to write notes in the

margin$

What is your opinion of the electronic boo%? Will it replace the printed boo%? Why not ust buy the boo%? #oes society have a place for the electronic boo%? Who do you thin% will use electronic boo%s and how will they use

them?

with some traits of traditional books, you can move forward or backward one page at a time, or use a stylus to write notes in the



Although input varies, in one wa! input devices do not8 most are encased in a

bland, beige, plastic shell$ A California compan! is changing that b! offeringke!boards and mice in oak, cherr!, or maple$ Upgrading appearance is not

cheap$ A wooden ke!board costs more than 9:;;, a wooden mouse more

than 9;;$ %ome people insist these devices make for a more attractive and,

in the long run, more productive work setting$

How much money would you spend to upgrade the appearance of your

computer eBuipment? Why? Would this %ind of upgrade increase productivity? Why or why not?

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MELJUN CORTES Hardware