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, joystick, wheel, light pen, touch screen, stylus, and digital

pen

Summarize how these pointing devices

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

pen

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

scanners and reading devices; terminals; and biometric input

Describe other types of input, including voice input; input devices for PDAs, smart phones, and Tablet PCs; digital cameras; voice 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 and headsets, fax machines and fax modems, multifunction peripherals,

and data projectors

Explain the characteristics of speakers and headsets, fax machines and fax modems, multifunction peripherals,

and data projectors

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 used to enter data or instructions into a computer

Data or instructions entered into the memory of computer

Keyboard and Pointing Devices

What is a keyboard?

p. 168 Fig. 5-2 Next

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

Keyboard and Pointing Devices

What is a mouse?

p. 169 Fig. 5-3a Next

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

movement of pointer, also called the pointer

Mechanical mouse has rubber or metal ball on its underside

mouse buttonswheel button

mouse pad

ball

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

Keyboard and Pointing Devices

What is an optical mouse?

p. 169 Fig. 5-3b Next

No moving mechanical parts inside

Senses light to detect mouse’s movement

More precise than mechanical mouse

More expensive than a mechanical mouse

Video: Alternatives to Your Boring Mouse

Beyond the mouse; cool alternatives to mousing around

low quality(click to start)

high quality(click to start)

Next

Keyboard and Pointing Devices

What is a trackball?

p. 170 Fig. 5-4 Next

Stationary pointing device with a ball on its top or side

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

Keyboard and Pointing Devices

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

Keyboard and Pointing Devices

What are a joystick and a wheel?

p. 171 Fig. 5-7 Next

Joystick is vertical lever mounted on a base Wheel is steering-wheel-type input device

Pedal simulates car brakes and accelerator

Keyboard and Pointing Devices

What is a light pen?

p. 171 Fig. 5-8 Next

Handheld input device that can detect the presence of light Press light pen against

screen surface and then press button on pen

Keyboard and Pointing Devices

What is a touch screen?

p. 171 Fig. 5-9 Next

Touch areas of screen with finger

Often used with kiosks

Keyboard and Pointing Devices

What is a stylus and a digital pen?

p. 172 Fig. 5-10 Next

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

Used with graphics tablets, flat electronic boards

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

Other Input Devices

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

computer’s capability to distinguish spoken words

p. 173 Next

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

Other Input Devices

p. 173 Fig. 5-13 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

Other Input Devices

How is a data entered into a PDA?

p. 174 Fig. 5-14 Next

Other Input Devices

What is a smart phone?

p. 175 Next

Users can input and send text messages, graphics, pictures, video clips, and sound files

Other Input Devices

What is a docking station?

p. 175 Fig. 5-15 Next

External device that holds mobile computer

Provides connections to peripherals

Other Input Devices

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

Other Input Devices

What is resolution?

p. 175 Next

Sharpness and clarity of image The higher the resolution, the better the image

quality, but the more expensive the camera Pixel (picture element) is single point in electronic

image Greater the number of pixels, the better the image

quality

Other Input Devices

What is video input?

p. 176 Next

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

Digital video (DV) camera records video as digital signals

Other Input Devices

What are a PC video camera and a Web cam?

p. 176 Fig. 5-17 Next

PC video camerac—cDV camera used to capture video and still images, and to make video telephone calls on Internet Also called PC camera

Web camc—cvideo camera that displays its output on a Web page

Other Input Devices

What is video conferencing?

p. 176 Fig. 5-18 Next

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

Other Input Devices

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

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

Other Input Devices

What is an optical reader?

p. 177 Fig. 5-21 Next

Optical character recognition (OCR) reads characters in OCR font

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

Other Input Devices

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

Other Input Devices

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

Other Input Devices

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?

Other Input Devices

p. 179 Fig. 5-24 Next

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

for check processing

Other Input Devices

What is a point of sale (POS) terminal?

p. 180 Fig. 5-25 Next

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

Other Input Devices

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

Other Input Devices

What is biometrics?

p. 181 Fig. 5-27 Next

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

curves and indentations of fingerprint

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

Other Input Devices

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 eye 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,called information Output device is any hardware component that can convey

information to one or more people

Display Devices

What is a display device?

p. 183 Fig. 5-31 Next

Output device that visually conveys information Information on display device sometimes

called soft copy Monitor houses display device as separate peripheral

Display Devices

What is an LCD monitor?

p. 184 Fig. 5-30 Next

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

LCD displays include Notebook computer,

Tablet PC, PDA, and Smart Phone

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

Display Devices

What is a plasma monitor?

p. 185 Fig. 5-32 Next

Displays image by applying voltage to layer of gas Larger screen size and higher display quality 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 determines the quality of a CRT monitor?

p. 186

Screen resolution

Refresh rate is speed at which monitor redrawsimages on screen

Text created with a smaller dot pitch is easierto read

Next

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 is a nonimpact printer?

p. 189 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

Printers

What is a laser printer?

p. 190 Fig. 5-38 Next

High-speed, high-quality nonimpact printer

Prints text and graphics in very high-quality resolution, ranging from 1,200 to 2,400 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, PDA, or smart phone 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 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 Fig. 5-43 Next

Computer component that produces music, speech, or other sounds

Speakers and headsets are common devices

Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation, then click Speakers and Headsets below Chapter 5

Video: Wired Cellular Headsets

A guide to the best cellular headsets

low quality(click to start)

high quality(click to start)

Next

Other Output Devices

What is voice output?

p. 194 Next

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

over Web

Other Output Devices

What is a facsimile (fax) machine?

p. 194 Fig. 5-44 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

Other Output Devices

What is a multifunction peripheral?

p. 194 Fig. 5-45 Next

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

Other Output Devices

What is a data projector?

p. 195 Fig. 5-46 Next

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

Putting It All Together

What are suggested output devices for the home user?

p. 196 Fig. 5-47 Next

Putting It All Together

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

p. 196 Fig. 5-47 Next

Putting It All Together

What are suggested output devices for the mobile user?

p. 196 Fig. 5-47 Next

Putting It All Together

What are suggested output devices for the large business user?

p. 196 Fig. 5-47 Next

Putting It All Together

What are suggested output devices for the power user?

p. 196 Fig. 5-47 Next

Input and Output Devices for Physically Challenged Users

What input devices are available for those with physical limitations?

p. 197 Fig. 5-48 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. 5-49 Next

Change Window 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