Input and Output.pdf

7/27/2019 Input and Output.pdf

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TMX 1010 End-User Computing

Lecture 3:

Input and Output


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Lecture 3 (Input) Objectives

Define input

List characteristics of a keyboard

Describe different mouse types

and how they work

Summarize how pointing devices work

Explain how voice recognition works

Describe various input devicesfor PDAs, Tablet PCs, and smart phones

Explain how a digital camera works

Describe uses of PC video cameras,Web cams, and video conferencing

Discuss various scanners and reading

devices and how they work

Explain the types of terminal

Summarize the various biometric devices

Identify alternative input devices forphysically challenged users

Next


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What Is Input?

What isinput?

p. 234 - 236 Fig. 5-1 Next

Input device is any hardware component that

allows users to enter data and instructions

Data or instructions entered into memory of

computer


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What Is Input?

What are the two types of input?

p. 230 Fig. 5-2 Next

Unprocessed text,

numbers, images,

audio, and video

Instructions

Programs

Commands

User responses

Data


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The Keyboard

How is the keyboard divided?


Typing area

Numeric keypad

Function keys,

special keys that

issue commands


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The Keyboard

What are alternative forms for commands?


MICROSOFT WORD KEY COMBINATION EQUIVALENTS

Key Menu |

Command Combination Command Button

Copy Shift+F2 or Edit | Copy

Ctrl+C

Open Ctrl+F12 File | Open

Paste Ctrl+V Edit | Paste

Many programs allow you to use key combination,

menu, or button to obtain same result


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The Keyboard

What is theinsertion point?


Blinking vertical bar that indicates where next

character you type will display

Pointerchanges

location and shape

as you move mouse

or other pointing

device


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The Keyboard

How are keyboards attached?


Desktop computer

keyboards often

attach via a cable

Wireless keyboards

communicate with a

receiver attached to a

port on the system

unit

Keyboards often are

built into mobile

devices


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Pointing Devices

What is amouse?

p. 239 Fig. 5-5 and 5-6 Next

Pointing device that fits under palm of hand

Pointing device (mouse

pointer) controls movement

of pointer

Mechanical mouse has rubber

or metal ball on underside

Optical mouse hassenses light

to detect mouses movement

Laser mouse

Air mouse

Wireless mouse


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Tilt

wheel

Press

wheel

button

Free-

spin

wheel

Right-

drag

Triple-

click

Double-

click

Right-

click

Pointing Devices

What are common mouse operations?


Point

Click

Drag

Rotate

wheel


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Other Pointing Devices

What is atrackball?


Stationary pointing

device with a ball on its

top or side

To move pointer, rotate

ball with thumb, fingers,

or palm of hand

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation,then click Repetitive StrainInjuries below Chapter 5
http://www.scsite.com/dc2009cp/ch5/weblink/


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What are atouchpadand a

pointing stick?

p. 241 - 242 Figs. 5-95-10 Next

Touchpadis small, flat,

rectangular pointing device

sensitive to pressure and motion Pointing stickis pointing device

shaped like pencil eraser

positioned between keys on

keyboard


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What is alight pen?

p. 239 Fig. 5-16 Next

Handheld input device

that can detect light

Press light pen against

screen surface and then

press button on pen


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What is atouch screen?

p. 242 Fig. 5-12 and 5-13 Next

Touch areas of screen with

finger Often used with kiosks

Microsoft Surface is a 30-

inch tabletop display that

allows one or more

people to interact with

the screen using their

fingers or hands

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation,then click Microsoft Surfacebelow Chapter 5


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What is adigital pen?

p. 243 Fig. 5-14 Next

Looks like a ballpoint pen, but uses pressure to write

text and draw lines Used withgraphics tablets, flat electronic boards

Also called stylus

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation,then click Graphics Tabletsbelow Chapter 5


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Controllers for Gaming and Media Players

What are the types ofgame controllers?

p. 244 - 245 Fig. 5-15 Next

Gamepads

Joysticks and

Wheels

Light gun

Dance pad

Motion-sensing

game controller

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation,then click Wii Remote

below Chapter 5


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Controllers for Gaming and Media Players

What is atouch-sensitive pad?

p. 245 Fig. 5-16 Next

Input device on a portable

media player that enables

users to scroll through

and play music, viewpictures, watch videos or

movies, adjust volume,

and customize settings

Click Wheel


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Voice Input

What is voice input?

p. 245 - 246 Fig. 5-17 Next

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation,then click Voice Inputbelow Chapter 5

The process of entering input by speaking into

a microphone

Voice recognitionis the computers capability

of distinguishing spoken words


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Voice Input

What is aMIDI (musical instrument

digital interface)?

p. 246 Fig. 5-18 Next

External device, such as electronic piano

keyboard, to input music and sound

effects


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Smart Phones, PDAs, and Tablet PCs

How is data

entered into a

smart phone?

Talk directly into

the microphone, orby using digital

cameras and touch-

sensitive pads

p. 247 Fig. 5-19 Next


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What is aportable keyboard?

p. 248 Fig. 5-20 Next

A portable keyboard is

a full-sized keyboard

that communicates with

the phone


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What is asmart phone?

p. 248 - 249 Fig. 5-21 Next

Users can input and send text messages,

graphics, pictures, video clips, and sound files

Many have a built-in or attachable camera


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What is aTablet PC?

p. 249 250 Fig. 5-23 Next

Mobile computer that

includes handwriting

recognition software

Primary input device is a

pressure-sensitive digital

pen


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Digital Cameras

What is adigital camera?

p. 250 - 251 Fig. 5-24 Next

Allows you to take

digital pictures

Images viewable

immediately on

camera

Download to

computer Post pictures

to Web


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Digital Cameras

How does a digital camera work?

p. 251 Fig. 5-25 Next


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Digital Cameras

What isresolution?

p. 252 Fig. 5-26 Next

Sharpness and clarity of image

The higher the resolution, the better the image

quality, but the more expensive the camera

Pixel(pictureelement)

is single point in

electronic image

Greater the number of

pixels, the better the

image quality


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Video Input

What isvideo input?

p. 253 Fig. 5-27 Next

Process of entering full-motion images

into computer

Video capture cardis

adapter card that convertsanalog video signal into

digital signal that

computer can use

Digital video (DV)camerarecords video as

digital signals


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Video Input

What is aWeb cam?

p. 253 - 254 Fig. 5-28 Next

Web cam is used to capture video and still images, send

e-mail messages with video attachments, add live

images to instant messages, broadcast live images over

the Internet, and to make video telephone calls on

Internet

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation,then click Web Camsbelow Chapter 5


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Video Input

What isvideo conferencing?

p. 254 Fig. 5-29 Next

Whiteboard is

another window on

screen that can

display notes and

drawings

simultaneously onall participants

screens

Two or more geographically separated people

who use network or Internet to transmit

audio and video data


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Scanners and Reading Devices

What is ascanner?

p. 255

256 Fig. 5-30 Next

Light-sensing device that

reads printed text and

graphics

Used for image processing,

converting paper documents

into electronic images


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How does aflatbed scannerwork?

p. 256 Fig. 5-31 Next

S d d


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What is anoptical reader?

p. 257 Fig. 5-32 Next

Opticalcharacterrecognition

(OCR)reads characters in

OCR font

Optical markrecognition

(OMR) reads hand-drawn pencil

marks, such as small circles

Device that uses light source to read characters, marks,

and codes and then converts them into digital data

S d R di D i


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What is aturnaround document?

p. 257 Fig. 5-33 Next

Document that you

return to the company

that sent it

Portion you return has

information printed in

OCR characters

S d R di D i


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What is abar code reader?

p. 258 Fig. 5-35 Next

Uses laser beams to read bar codes

S d R di D i


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What is abar code?

p. 258 Fig. 5-35 Next

Identification code that consists of a set of vertical

lines and spaces of different widths

POSTNET

UniversalProduct

Code(UPC)

S d R di D i


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What are some widely used bar codes?

p. 256 Fig. 5-38 Next

S d R di D i


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What is amagnetic-ink character recognition

(MICR) reader?


p. 260 Fig. 5-38 Next

Can read text printed with magnetized ink

Banking industry almost exclusively uses MICR

for check processing

S d R di D i


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What is adata collection device?

p. 261 Fig. 5-39 Next

Obtains data directly at location where transaction

or event takes place

Transmits data over

network

or Internet

O h I D i


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Other Input Devices

What is anRFID reader?

p. 259 Fig. 5-36 Next

Reads information on

the tag via radio waves

Can be handheld

devices or mounted in a

stationary object

O h I D i


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Other Input Devices

What is amagnetic stripe card reader?

p. 260 Fig. 5-37 Next

Reads the magnetic

stripe on the back of a

credit card

Exposure to a magnetic

field can erase the

contents of a cards

magnetic stripe

T i l


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Terminals

What is apoint of sale(POS) terminal?

p. 261 - 262 Fig. 5-40 Next

Records purchases,

processes credit or

debit cards, and

updates inventory

Swipe credit or debit

card through card

reader or use your

fingerprint

Reads customers

personal data from

magnetic strip

T i l


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Terminals

What is anautomated teller machine (ATM)?

p. 262 Fig. 5-41 Next

Self-service banking

machine that connects to a

host computer through a

network

Bi t i Inp t


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Biometric Input

What isbiometrics?

p. 262

264 Fig. 5-42 and 5-43 Next

Authenticates persons identity

by verifying personal

characteristic

Fingerprint reader captures

curves and indentations offingerprint

Hand geometry system measures

shape and size of persons hand

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation,then click Biometric Inputbelow Chapter 5

Bi m tri Inp t


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Biometric Input

What are examples of biometric technology?

p. 263

264 Figs. 5-44

5-45 Next

Voice verification system compares live

speech with stored voice pattern

Signature verification system recognizes

shape of signature

Iris recognition systemreads

patterns in blood vessels in back

of retina

Biometric data is sometimes storedon smart card, which stores

personal data on microprocessor

embedded in card

P tting It All Together


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Enhanced keyboard or ergonomic keyboard

Mouse

Stylus for smart phone or other personal mobile

device

Game controller(s)

30-bit 600 x 1200 ppi color scanner

4-megapixel digital camera

Headphones that include a microphone (headset)

Web cam

Fingerprint reader

Putting It All Together

What are recommended input devices for home users?

p. 265 Fig. 5-46 Next



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Mouse

Stylus and portable keyboard for smart phone or

other personal mobile device, or digital pen for

Tablet PC


5-megapixel digital camera

Headphones that include a microphone (headset) Web cam


p. 265 Fig. 5-46 Next

What are recommended input devices for

small office/home office users (SOHO)?



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Wireless mouse for notebook computer

Touchpad or pointing stick on notebook computer

Stylus and portable keyboard for smart phone orother personal mobile device, or digital pen for Tablet

PC

4- or 5-megapixel digital camera


Fingerprint reader for notebook computer


What are recommended input devices for mobile users?

p. 265 Fig. 5-46 Next



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Mouse

Stylus and portable keyboard for smart phone or other

personal mobile device, or digital pen for Tablet PC

Touch screen Light pen


6- to 12-megapixel digital camera

OCR/OMR readers, bar code readers, MICR reader, or data

collection devices Microphone

Video camera for video conferences

Fingerprint scanner or other biometric device


p. 265 Fig. 5-46 Next

What are recommended input devices for large

business users?



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Mouse

Stylus and portable keyboard for smart phone or

personal mobile device

Pen for graphics tablet


6- to 12-megapixel digital camera


Web cam


What are recommended input devices for power users?

p. 265 Fig. 5-46 Next

Input Devices for Physically Challenged Users


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Input Devices for Physically Challenged Users

What input devices are available

for those with physical limitations?

p. 263 Figs. 5-49

5-50 Next

Keyguardallows users to rest

hands on keyboard without

accidentally pressing keys

Head-mounted pointer controls

pointer on screen

New developments includegesture

recognition and computerized

implant devices

Summary of Input


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Summary of Input

Keyboard, mouse, and other

pointing devices

Voice input

Input devices for PDAs, Tablet PCs,

and smart phones

Digital cameras

Video Input

Scanners and reading devices

Terminals

Biometric input

Input devices for physically

challenged users

Next

Lecture 3 (Output) Objectives


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Lecture 3 (Output) Objectives

Describe the four categories of output

Summarize the characteristics of LCD monitors,

LCD screens, plasma monitors, and CRT monitors

Describe the various ways to print

Differentiate between a nonimpact printer and an

impact printer

Describe the uses of speakers, headphones,

and earphones

Identify the output characteristics of fax machines

and fax modems, multifunction peripherals, data

projectors, interactive whiteboards, joysticks,

wheels, gamepads, and motion-sensing game

controllers

Identify output options for

physically challenged users

Next

Summarize the characteristics of ink-jet printers,photo printers, laser printers, thermal printers,

mobile printers, label and postage printers,

and plotters and large-format printers

What is Output?


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What is Output?What isoutput?

p. 300 - 301 Fig. 6-1 Next

Data that has been processed into a useful form

Output device is any hardware component that can convey

information to one or more people

Display Devices


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Display DevicesWhat is adisplay device?

p. 302 Next

Output device that visually

conveys text, graphics, and

video information

Information on display device

sometimes called soft copy

Monitorhouses display device

that is packaged as separate

peripheral

Display Devices


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Display DevicesWhat is aCRT monitor?

p. 309 Fig. 6-10 Next

Containscathode-raytube (CRT)

Screen coated with tiny

dots of phosphor material Each dot consists of a red,

blue, and green phosphor

Common sizes are 15, 17,

19, 21, and 22 inches

Viewable size is diagonal

measurement of actual

viewing area

Display Devices


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Display Devices

What is theENERGY STAR program?

p. 309 Next

Encourages manufacturers to create energy-efficientdevices that require little power when not in use

Monitors and devices meeting guidelines display

ENERGY STAR label

Display Devices


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Display Devices

What is an LCD monitor?

p. 302 - 303 Fig. 6-2 Next

Uses liquid crystal display Has a small footprint

Also called Flat-Panel Displays

Mobile devices that contain

LCD displays include

Notebook computer, Tablet

PC, ultra personal

computer, portable media

player, smart phone, and

PDA

Display Devices


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Display Devices

What about using multiple LCD monitors?


Some users position

two or more monitors

side-by-side or stacked

Allows users to runmultiple applications

simultaneously

Display Devices


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Display Devices

What are some mobile devices that have LCD screens?

p. 303 - 304 Fig. 6-4 Next

Click to view Web Link,click Chapter 6, Click Web Linkfrom left navigation,then click Widescreen LCDMonitors below Chapter 6

Displays Devices


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Displays Devices

What is anelectronic book (e-book)?

p. 300 Next

Small, book-sized computer that uses LCD screen Allows users to read, save, highlight, bookmark, and

add notes to online text Download new book content from Web

Display Devices


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Display Devices

What isresolution?

p. 304 - 305 Fig. 6-5

Sharpness and

clarity of image

Higher resolution

makes image

sharper, displays

more text on screen,makes some elements

smaller

Next

Number of horizontal

and vertical pixels in

a display device

Display Devices


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Display Devices

How do you use an LCD monitor with a video card?


Plug monitor intoDigital Video Interface (DVI)port or

an HDMI port on computer

Click to view Web Link,click Chapter 6, Click Web Linkfrom left navigation,then click Video Cardsbelow Chapter 6

Display Devices


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Display Devices

What is aplasma monitor?


Displays image by applying voltage to layer of gas Larger screen size and richer colors than LCD, but are more

expensive

Display Devices


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Great for game playing, watching movies, and browsing the Internet

HDTV

(high-definition television)

is the most advanced form

of digital TV

Display Devices

What isdigital television (DTV) andhigh-definition

television (HDTV)?

p. 308 Next

Uses digital signals to produce

crisper, higher-quality output

on LCD and plasma televisions

Many programs can be

broadcast on a single

digital channel

All broadcast stations

transmit digital signalsHigh resolution

Printers


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PrintersWhat is aprinter?

p. 310 Fig. 6-11 Next

Output device thatproduces text and

graphics on a physical

medium Result ishard copy, or

printout Two orientations:portrait

andlandscape

portrait

landscape

Printers


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Speed

PrintersHow do you know which printer to buy?

p. 310 Next

BudgetColor or

black and white

Cost per pagePaper types

and sizes

Graphics and

photo printingMultiple copies

Systemcompatibility

Depends on printing needs

WirelesscapabilityFuture needs

Printers


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What is adot-matrix printer?

p. 318 - 319 Fig. 6-24 Next

Impact printer that produces printed imageswhen tiny wire pins strike ribbon Impact printer forms

characters by striking

mechanism against inkedribbon that contacts paper

Printers


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What is aline printer?

p. 319 Fig. 6-25 Next

High-speed impact printerthat prints entire lineat a time

Speed measured in lines

per minute (lpm)

Band printer prints fullyformed characters using ahammer mechanism

Shuttle-matrix printer is

high-speed printer thatworks like dot-matrix

printer

Printers


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What is anonimpact printer?

p. 312 Fig. 6-14 Next

Forms characters and graphics without striking paper

Ink-jet printer sprays tiny drops of liquid ink

onto paper Prints in black-and-white or color on a variety

of paper types

Printers


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What is theresolutionof a printer?

p. 306 Fig. 6-20 Next

Sharpness and clarity Measured by number ofdots per inch (dpi)printer

can output

Printers


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How does an ink-jet printer work?

p. 313

314 Fig. 6-16 Next

Step 1.A smallresistor heats the

ink, causing the

ink to boil and

form a vapor

bubble.

Step 2.Thevapor bubble

forces the ink

through the

nozzle.

Step 3.Inkdrops onto the

paper.

Step 4.As the vapor bubblecollapses, fresh ink is drawn into

the firing chamber.

Click to view Web Link,click Chapter 6, Click Web Linkfrom left navigation,then click Ink-Jet Printersbelow Chapter 6

print cartridge

print head

firing

chamber

nozzlebubble resistor ink

ink dot

Printers


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What is aphoto printer?

p. 314 - 315 Fig. 6-17 Next

Color printer that produces photo-lab-qualitypictures

Many photo printers have a built-in card slot

PictBridge is a standard technology that allows you to

print pictures directly from a digital camera

Click to view Web Link,click Chapter 6, ClickWeb Link from leftnavigation, then clickPictBridge below Chapter 6

Printers


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What is alaser printer?

p. 315 Fig. 6-18 Next

High-speed, high-qualitynonimpact printer

Prints text and graphics

in high-quality

resolution, ranging from1,200 to 2,400 dpi

Typically costs more

than

ink-jet printer, but ismuch faster

Printers


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How does a laser printer work?

p. 316 Fig. 6-19 Next

Click to view Web Link,click Chapter 6, ClickWeb Link from leftnavigation, then clickLaser Printersbelow Chapter 6

Printers


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What is athermal printer?

p. 317 Fig. 6-20 Next

Generates images bypushing electrically heated

pins against heat-sensitive

paper Dye-sublimation printer

(also called a digital photo

printer) uses heat to

transfer dye to specially

coated paper

Printers


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What is amobile printer?

p. 317 Fig. 6-21 Next

Small, lightweight, battery-powered printer that allowsmobile user to print from notebook computer, Tablet

PC, smart phone, or other personal mobile device

while traveling

Printers


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What are label printers and postage printers?

p. 318 Fig. 6-22 Next

Small printer that prints on adhesive-type material Postage printer has built-in digital scale and prints

postage stamps Most also print bar codes

Printers


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What is aplotter?

p. 318 Fig. 6-23 Next

Sophisticated printer used to produce high-qualitydrawings

Large-format printercreates photo-realistic-quality

color prints

Printers


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What iswireless printing?

p. 312 Fig. 6-29 Next

Output transmitted to printer wirelessly via infraredlight waves or radio waves

Bluetooth printing uses radio waves

Devices need to be within 30-foot range

Click to view Web Link,

click Chapter 6, Click Web Link

from left navigation, then click

Wireless Printing

below Chapter 6

Speakers, Headphones, and Earphones
http://www.scsite.com/dc2005/


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What is anaudio output device?

p. 320 - 321 Figs. 6-26

6-28 Next

Computer component that produces music, speech, orother sounds

Speakers and headsets are common devices

Click to view WebLink, click Chapter 6, ClickWeb Link from leftnavigation, then clickWireless Music Systembelow Chapter 6

Speakers, Headphones, and Earphones


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What isvoice output?

p. 314 Fig. 6-32 Next

Computer talks to you through speakers on computer Internet telephony allows you to have conversation

over Web

Other Output Devices


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What is afacsimile (fax) machine?

p. 322 Fig. 6-30 Next

Device that transmits and receives documents overtelephone lines

Converts an original document into a digitized image

Many computers include fax capability



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What is afax modem?

p. 322 Fig. 6-29 Next

Modem that allows you to send and receive electronicdocuments as faxes

Click to view WebLink, click Chapter 6,Click Web Link fromleft navigation, thenclick Fax Modemsbelow Chapter 6



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What is amultifunction peripheral?

p. 323 Fig. 6-30 Next

Provides functionality

of printer, scanner,

copy machine, and

fax machine



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What is adata projector?

p. 323 Fig. 6-31 Next

Device that takes textand images from

computer screen and

projects them onto

larger screen LCD projector

Digital Light Processing

(DLP) projector



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What is aninteractive

whiteboard?

p. 324 Fig. 6-32 Next

Touch-sensitive device

that displays the image

on a connected

computer screen SMART board

Click to view WebLink, click Chapter 6, ClickWeb Link from leftnavigation, then clickSMART Boardbelow Chapter 6



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What isforce feedback?

p. 324 Fig. 6-33 Next

Sends resistance todevice in response to

actions of user



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What are suggested output devices for the home user?

p. 325 Fig. 6-34

Monitor Printer Other

17- or 19-inch

LCD monitor, or

17-inch LCDscreen on

notebook

computer

Ink-jet color

printer; or

Photo printer

Speakers

Headphones or

earphones Force-feedback

joystick, wheel,

gamepad, and/or

motion-sensing

game controller

Next



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What are suggested output devices for the small office/home

office user?

p. 325 Fig. 6-34

19- or 22-inch

LCD monitor

LCD screen onTablet PC, smart

phone, or other

personal mobile

device

Multifunction

peripheral; or

Ink-jet colorprinter; or

Laser printer

(black-and-

white or color)

Label printer

Postage printer

Fax machine

Speakers


Next



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What are suggested output devices for the mobile user?

p. 325 Fig. 6-34

17-inch color

LCD screen on

notebookcomputer

LCD screen on

Tablet PC, smart

phone, or other

personal mobile

device

Mobile color

printer

Ink-jet colorprinter; or

Laser printer for

in-office use

(black-and-

white or color)

Photo printer

Fax modem

Headphones or

earphones DLP data

projector


Next



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What are suggested output devices for the power user?

p. 325 Fig. 6-34 Next

27-inch LCD

monitor

Laser printer

(black-and-

white or color) Plotter or large-

format printer;

or

Photo printer; or

Dye-sublimation

printer

Fax machine or

fax modem

Speakers Headphones or

earphones




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What are suggested output devices for the large business user?

p. 325 Fig. 6-34

High-speed laser

printer

Laser printer,color

Line printer (for

large reports

from a

mainframe)

Label printer

Fax machine or

fax modem

Speakers Headphones or

earphones

Networked DLP

data projector

Interactive

whiteboard


Next

19- or 22-inch

LCD monitor

LCD screen onTablet PC, smart

phone, or other

personal mobile

device

Output Devices for Physically Challenged Users


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What is theMagnifier?

p. 326 Fig. 6-35Next

Windows Magnifierenlarges text and

other items on

screen

Output Devices for Physically Challenged Users


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What other output options are available for visually

impaired users?

p. 326 Fig. 6-36Next

Change Window settings,

such as increasing size or

changing color of text to

make words easier to read

Blind users can work with

Windows Vistas Narrator Braille printeroutputs

information in Braille

onto paper

Summary ofOutput


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Multifunction peripheralsDisplay devices

Printers

Speakers, headphones, and earphones

Fax machines and fax modems

Data projectors

Interactive whiteboards

Force feedback joysticks, wheels,and gamepads

L t 3 C l t

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