Discovering Computers Fundamentals Fifth Edition Chapter 5 Input and Output.

Discovering Computers

FundamentalsFifth Edition

Chapter 5Input and

Output

Chapter 5 Objectives

List the characteristicsof a keyboard

List the characteristicsof a keyboard

Summarize how these pointing devices

work: mouse, trackball, touchpad, pointing stick, light pen, touch screen, stylus, digital pen, and

gaming and media player controllers

Summarize how these pointing devices

work: mouse, trackball, touchpad, pointing stick, light pen, touch screen, stylus, digital pen, and

gaming and media player controllers

Describe other types of input, including voice input; input devices for smart phones, PDAs, and Tablet PCs; digital cameras; video input;

scanners and reading devices; terminals; and biometric input

Describe other types of input, including voice input; input devices for smart phones, PDAs, and Tablet PCs; digital cameras; video input;

scanners and reading devices; terminals; and biometric input

Describe the characteristics of LCD monitors, LCD screens, and CRT

monitors

Describe the characteristics of LCD monitors, LCD screens, and CRT

monitors

Summarize the various types of printersSummarize the various types of printers

Explain the characteristics of speakers, headphones, and earphones; fax

machines and fax modems, multifunction peripherals; data

projectors; and interactive whiteboards

Explain the characteristics of speakers, headphones, and earphones; fax

machines and fax modems, multifunction peripherals; data

projectors; and interactive whiteboards

Identify input and output options for physically challenged users

Identify input and output options for physically challenged users

Next

What Is Input

What is input?

p. 166 Fig. 5-1 Next

Input device is any hardware component that allows users to enter data and instructions

Data or instructions entered into the memory of computer

Keyboard and Pointing Devices

What is a keyboard?


Input device that contains keys users press to enter data into a computer

Includes typing area, numeric keypad, and function keys

Can be cordless or built-in


What is a mouse?


Pointing device that fits under the palm of your hand Pointing device controls

movement of pointer

Mechanical mouse Optical mouse Laser mouse Air mouse

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

http://www.scsite.com/dcf5e/ch5/weblink/


What is a trackball?


Stationary pointing device with a ball on its top or side

To move pointer, rotate ball with thumb, fingers, or palm of hand


What are a touchpad and a pointing stick?

p. 170 Figs. 5-5—5-6 Next

Touchpad is small, flat, rectangular pointing device sensitive to pressure and motion

Pointing stick is pointing device shaped like pencil eraser positioned between keys on keyboard


What is a light pen?

p. 170 Next

Handheld input device that can detect the presence of light Press light pen against screen surface and then press

button on pen


What is a touch screen?

p. 170 - 171 Fig. 5-7 and 5-8 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 Surface below Chapter 5



What is a digital pen?


Looks like a ballpoint pen, but uses pressure to write text and draw lines

Used with graphics tablets, flat electronic boards

Gaming and Media Player ControllersWhat are the types of game controllers?

p. 172 Fig. 5-10 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 Remotebelow Chapter 5


Gaming and Media Player ControllersWhat is a touch-sensitive pad?

p. 172 Fig. 5-11 Next

Input device on a portable media player that enables users to scroll through and play music, view pictures, watch videos or movies, adjust volume, and customize settings Click Wheel

Other Types of Input

What is voice input? Entering input by speaking into a microphone Voice recognition or speech recognition is the

computer’s capability to distinguish spoken words

p. 173 Next


p. 173 Fig. 5-12 Next

What is audio input? Entering sounds into a computer - speech,

music, and sound effects MIDI - standard defining how digital musical

devices represent sound electronically


How is data entered into a smart phone?

p. 174 Fig. 5-13 Next


What is a Tablet PC?

p. 174 -175 Fig. 5-15 Next

Mobile computer Primary input device is a

pressure-sensitive digital pen


What is a digital camera?

p. 175 Fig. 5-16 Next

Allows you to take digital pictures

Images viewable immediately on camera Download to

computer Post pictures

to Web


What is resolution?

p. 176 Next

Number of horizontal and vertical pixels in a display device

Resolutions range from 4 million to more than 16 million pixels (MP)

Pixel (picture element) is smallest element in electronic image Greater the number of pixels, the better the image

quality


What is video input?

p. 176 Next

Process of capturing full-motion images and storing them on a computer’s storage medium

Digital video (DV) camera records video as digital signals


What is a Web cam?

p. 176 Fig. 5-17 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 Cams below Chapter 5



Video: Video Editing on Your Computer

Next

CLICK TO START


What is video conferencing?

p. 176 Fig. 5-18 Next

Two or more geographically separated people who use a network or the Internet to transmit audio and video data


What is a scanner?

p. 177 Fig. 5-19 Next

Light-sensing device that reads printed text and graphics Used for image processing,

converting paper documents into electronic images


What is a turnaround document?

p. 177 Fig. 5-20 Next

Document that you return to the company that sent it Portion you return has

information printed in OCR characters


What is an optical reader?

p. 177 - 178 Fig. 5-21 Next

Optical character recognition (OCR) reads typewritten characters

Optical mark recognition (OMR) reads hand-drawn pencil marks, such as small circles

Bar code reader

Device that uses light source to read characters, marks, and codes and then converts them into digital data


What is an RFID reader?

p. 178 Fig. 5-22 Next

Reads information on the tag via radio waves Can be handheld

devices or mounted in a stationary object


What is a magnetic stripe card reader?

p. 179 Fig. 5-23 Next

Reads the magnetic stripe on the back of a credit card

Exposure to a magnetic field can erase the contents of a card’s magnetic stripe

What is a magnetic-ink character recognition (MICR) reader?


p. 179 Fig. 5-24 Next

Can read text printed with magnetized ink Banking industry almost exclusively uses MICR

for check processing


What is a point of sale (POS) terminal?

p. 180 - 181 Fig. 5-25 Next

Records purchases, processes credit or debit cards, and updates inventory

Fingerprint can be linked to a payment method


What is an automated teller machine (ATM)?

p. 180 Fig. 5-26 Next

Self-service banking machine that connects to a host computer through a network


What is biometrics?

p. 181 Fig. 5-27 Next

Authenticates person’s identity by verifying a personal characteristic Fingerprint reader captures

curves and indentations of a fingerprint

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



What are examples of biometric technology?

p. 181 Fig. 5-28 Next

Voice verification system compares live speech with stored voice pattern

Signature verification system recognizes shape of signature

Iris recognition system reads patterns in blood vessels in back of retina Biometric data is sometimes stored

on smart card, which stores personal data on microprocessor embedded in card

What is Output

What is output?

p. 182 Fig. 5-29 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

What is a display device?

p. 183 - 184 Fig. 5-31 Next

Output device that visually conveys text, graphics, and video information Typically used with desktop computers

Monitor houses display device as separate peripheral

Display Devices

What is an LCD monitor?

p. 184 -185 Fig. 5-30 Next

Uses liquid crystal display Have a small footprint Mobile devices that contain

LCD displays include Notebook computer, Tablet

PC, ultra personal computer, portable media player, smart phone, and PDA

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation, then click Widescreen LCD Monitors below Chapter 5


Display Devices

Video: SID: Size Matters

Next

CLICK TO START

Display Devices

What is a plasma monitor?

p. 185 Fig. 5-32 Next

Uses gas plasma technology Larger screen size and richer colors than LCD, but are more

expensive

Display Devices

What is a CRT monitor?

p. 186 Fig. 5-33 Next

Contains cathode-ray tube (CRT)

Common sizes are 15, 17, 19, 21, and 22 inches Viewable size is diagonal

measurement of actual viewing area

Display Devices

What is the ENERGY STAR program?

p. 186 Next

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

Monitors and devices meeting guidelines display ENERGY STAR label

Printers

What is a printer?

p. 187 Fig. 5-34 Next

Output device that produces text and graphics on a physical medium

Purchasing a printer

Printers

What are the various ways to print documents and pictures?

p. 188 Fig. 5-35 Next

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


Printers

What is a nonimpact printer?

p. 189 - 190 Fig. 5-36 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

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation, then click Ink-Jet Printersbelow Chapter 5


Printers

What is a photo printer?

p. 190 Fig. 5-37 Next

Color printer that produces photo-lab-quality pictures 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

Printers

What is a laser printer?

p. 190 - 191 Fig. 5-38 Next

High-speed, high-quality nonimpact printer

Prints text and graphics in high-quality resolution, ranging from 1200 to 2400 dpi

Typically costs more than ink-jet printer, but is much faster

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


Printers

What is a thermal printer?

p. 191 Fig. 5-39 Next

Generates images by pushing 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

What is a mobile printer?

p. 192 Fig. 5-40 Next

Small, lightweight, battery-powered printer that allows mobile user to print from notebook computer, Tablet PC, or smart phone or other personal mobile device while traveling

Printers

What is a plotter?

p. 192 Fig. 5-41 Next

Sophisticated printer used to produce high-quality drawings

Large-format printer creates photo-realistic-qualitycolor prints

Printers

What is an impact printer?

p. 192 - 193 Fig. 5-42 Next

Forms characters by striking mechanism against inked ribbon that contacts paper Dot-matrix printer produces

printed images when tiny wire pins strike ribbon

Line printer prints entire lineat a time

Other Output Devices

What is an audio output device?

p. 193 - 194 Fig. 5-43 Next

Computer component that produces music, speech, or other sounds

Speakers, earphones, and earbuds are common devices

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



What is a facsimile (fax) machine?

p. 194 Next

Device that transmits and receives documents over telephone lines

What is a fax modem? Modem that allows you to send and receive electronic

documents as faxes


What is a multifunction peripheral?

p. 194 Fig. 5-45 Next

Provides functionality of a printer, scanner, copy machine, and fax machine


What is a data projector?

p. 195 Fig. 5-46 Next

Device that takes the text and image from computer screen and projects it onto larger screen


What is an interactive whiteboard?

p. 195 Fig. 5-47 Next

Touch-sensitive device that displays the image on a connected computer screen

Putting It All Together

What are suggested input and output devices for the home user?

p. 196 Fig. 5-48 Next

Home User Input Device Output Device

• Enhanced keyboard or ergonomic keyboard

• Mouse• Stylus for smart phone

or other personal mobile device

• Game controller• Color scanner• 4-megapixel digital

camera• Headphones that

include a microphone• Web cam• Fingerprint reader

• 17- or 19-inch color LCD monitor, or 17-inch LCD screen on notebook computer

• Ink-jet color printer; or• Photo printer• Speakers• Headphones or

earphones


What are suggested input and output devices for the small office/home office user?

p. 196 Fig. 5-48 Next

SOHO User Input Device Output Device• Enhanced keyboard or

ergonomic keyboard• Mouse• Stylus and portable

keyboard for smart phone or other personal mobile device, or digital pen for Tablet PC

• Color scanner• 5-megapixel digital

camera• Headphones that

include a microphone• Web cam

• 19- or 22-inch LCD monitor

• LCD screen on Tablet PC, smart phone, or other personal mobile device

• Multifunction peripheral; or

• Ink-jet color printer; or• Laser printer (black-

and-white or color)• Fax machine• Speakers


What are suggested input and output devices for the mobile user?

p. 196 Fig. 5-48 Next

Mobile User Input Device Output Device• Wireless mouse for

notebook computer• Touchpad or pointing stick

on notebook computer• Stylus and portable

keyboard for smart phone or other personal mobile device, or digital pen for Tablet PC

• 4- or 5- megapixel digital camera

• Headphones that include a microphone

• Fingerprint reader for notebook computer

• 17-inch LCD screen on notebook computer

• LCD screen on smart phone or other personal mobile device

• Mobile color printer• Ink-jet color printer; or• Laser printer, for in-office

use (black-and-white or color)

• Photo printer• Fax modem• Headphones or

earphones• Data projector


What are suggested input and output devices for the power user?

p. 196 Fig. 5-48 Next

Power User Input Device Output Device


• Mouse• Stylus and portable

keyboard for smart phone or other personal media device

• Pen for graphics tablet• Color scanner• 6- to 12-megapixel

digital camera• Headphones that

include a microphone• Web cam

• 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


What are suggested input and output devices for the large business user?

p. 196 Fig. 5-48 Next

Large Business User Input Device Output Device


• Mouse• Stylus and portable keyboard

for smart phone or other personal mobile device, or digital pen for Tablet PC

• Touch screen• Light pen• Color scanner• 6- to 12- megapixel digital

camera• OCR/OMR readers, bar code

readers, or MICR reader• Microphone• Video camera for video

conferences• Fingerprint reader or other

biometric device

• 19- or 22-inch LCD monitor

• LCD screen on Tablet PC, smart phone, or other personal mobile device

• High-speed laser printer• Laser printer, color• Line printer (for large

reports from a mainframe)• Fax machine or fax

modem• Speakers• Headphones or

earphones• Data projector• Interactive whiteboard

Input and Output Devices for Physically Challenged Users

What input devices are available for those with physical limitations?

p. 197 Fig. 5-49 Next

Keyboards with larger keys Head-mounted pointer controls

pointer on screen

Input and Output Devices for Physically Challenged Users

What other output options are available for visually impaired users?

p. 197 Fig. 5-50 Next

Change Windows Vista settings, such as increasing size or changing color of text to make words easier to read

Blind users can work with voice output

Braille printer outputs information in Braille onto paper

Processing and organizinginput into output

Processing and organizinginput into output

Summary of Input and Output

Data and instructionsData and instructions

Various techniques of inputVarious techniques of input

Commonly used input devicesCommonly used input devices

Various methods of outputVarious methods of output

Commonly used output devicesCommonly used output devices

Chapter 5 Complete

Discovering Computers Fundamentals Fifth Edition Chapter 5 Input and Output.

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