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1 Chapter 5 Input and Output - 61 slides -
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Chapter 5Input and Output- 61 slides -
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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, audio player, control pad, gamepad, light pen, touch screen, stylus, and digital
pen
Summarize how these pointing devices
work: mouse, trackball, touchpad, pointing stick, joystick, wheel, audio player, control pad, gamepad, 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, headphones and earphones;
fax machines and fax modems, multifunction peripherals, and data
projectors
Explain the characteristics of speakers, headphones and earphones;
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
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What Is Input?
What is input?
p. 166 - 167 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
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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
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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
Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation, then click Mousebelow Chapter 5
mouse buttons
mouse pad
ball
wheel button
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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
7
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
8
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
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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
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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
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Other Pointing Devices
What is a control pad and a gamepad?
p. 171 Fig. 5-8
Control pad on an audio player allows users to scroll through music, adjust volume, and customize settings
Gamepad a pointing device that controls the movement and actions of players or objects in games
Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation, then click iPod Click Wheel below Chapter 5
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Keyboard and Pointing Devices
What is a light pen?
p. 171 Next
Handheld input device that can detect the presence of light Press light pen against screen surface and then press
button on pen
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Keyboard and Pointing Devices
What is a touch screen?
p. 171 Fig. 5-9
Touch areas of screen with finger
Often used with kiosks
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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
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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
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Other Input Devices
p. 173 Fig. 5-13
What is audio input? Entering sounds into a computer - speech,
music, and sound effects MIDI - standard defining how digital musical
devices represent sound electronically
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Other Input Devices
How is data entered into a PDA?
p. 174 Fig. 5-14 Next
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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
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PDAs, Tablet PCs, and Smart PhonesWhat is a Tablet PC?
p. 175 Fig. 5-15 Next
Mobile computer that includes handwriting recognition software
Primary input device is a pressure-sensitive digital pen
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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
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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
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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
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Other Input Devices
What is 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
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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
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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
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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
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Other Input Devices
What is an optical reader?
p. 178 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
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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
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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
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What is a magnetic-ink character recognition (MICR) reader?
Other Input Devices
p. 179 Fig. 5-24
Can read text printed with magnetized ink Banking industry almost exclusively uses MICR
for check processing
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Other Input Devices
What is a point of sale (POS) terminal?
p. 180 Fig. 5-25
Records purchases, processes credit or debit cards, and updates inventory
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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
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Other Input Devices
What is biometrics?
p. 181 Fig. 5-27
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
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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
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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
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Display Devices
What is a display device?
p. 183 Fig. 5-31
Output device that visually conveys information Information on display device sometimes
called soft copy Monitor houses display device as separate peripheral
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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, PDA, and Smart Phone
Click to view Web Link,click Chapter 5, Click Web Linkfrom left navigation, then click LCD Technology below Chapter 5
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Display Devices
What is a plasma monitor?
p. 185 Fig. 5-32
Displays image by applying voltage to layer of gas Larger screen size and higher display quality than LCD, but
are more expensive
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Display Devices
What is a CRT monitor?
p. 186 Fig. 5-33
Contains cathode-ray tube (CRT)
Common sizes are 15, 17, 19, 21, and 22 inches Viewable size is diagonal
measurement of actual viewing area
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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
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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
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Printers
What are the various ways to print documents and pictures?
p. 188 Fig. 5-35
various ways to
printercable
dockingstation
mediacard
cable
wirelessprinters
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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
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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
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Printers
What is a laser printer?
p. 190 - 191 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
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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
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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
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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
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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
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Other Output Devices
What is an audio output device?
p. 193 Fig. 5-43
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
51
Video: Wired Cellular Headsets
A guide to the best cellular headsets
low quality(click to start)
high quality(click to start)
Next
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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
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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
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Other Output Devices
What is a multifunction peripheral?
p. 194 Fig. 5-45 Next
Provides functionality of printer, scanner, copy machine, and fax machine
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Other Output Devices
What is a data projector?
p. 195 Fig. 5-46
Device that takes image from computer screen and projects it onto larger screen
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Putting It All Together
What are suggested output devices for the home user?
p. 196 Fig. 5-47 Next
Home User Input Device Output Device
• Enhanced keyboard or ergonomic keyboard• Mouse• Stylus for PDA or smart phone• Joystick or wheel• Color scanner• 3-megapixel digital camera• Headphones that include a microphone• PC video camera
• 17- or 19-inch color LCD monitor• Ink-jet color printer; or• Photo printer• Speakers• Headphones or earphones
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Putting It All Together
What are suggested output devices for the small office/home office user?
p. 196 Fig. 5-47 Next
SOHO User Input Device Output Device
• Enhanced keyboard or ergonomic keyboard• Mouse• Stylus and portable keyboard for PDA or smart phone, or digital pen for Tablet PC• Color scanner• 3-megapixel digital camera• Headphones that include a microphone• PC video camera
• 19- or 21-inch LCD monitor• Color LCD screen on Tablet PC, PDA,or smart phone• Multifunction peripheral; or • Ink-jet color printer; or• Laser printer (black-and-white or color)• Fax machine• Speakers
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Putting It All Together
What are suggested output devices for the mobile user?
p. 196 Fig. 5-47
Mobile User Input Device Output Device
• Wireless mouse for notebook computer• Touchpad or pointing stick on notebook computer• Stylus and portable keyboard for PDA or smart phone, or digital pen for Tablet PC• 3- or 4-megapixel digital camera• Headphones that include a microphone• Fingerprint scanner for notebook computer
• 15.7-inch LCD screen on notebook computer• Color LCD screen on PDA or smart phone• 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
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Putting It All Together
What are suggested output devices for the power user?
p. 196 Fig. 5-47 Next
Power User Input Device Output Device
• Enhanced keyboard or ergonomic keyboard• Mouse• Stylus and portable keyboard for PDA or smart phone• Pen for graphics tablet• Color scanner• 6- to 8-megapixel digital camera• Headphones that include a microphone• PC video camera
• 23-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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Putting It All Together
What are suggested output devices for the large business user?
p. 196 Fig. 5-47
Large Business User Input Device Output Device
• Enhanced keyboard or ergonomic keyboard• Mouse• Stylus and portable keyboard for PDA or smart phone, or digital pen for Tablet PC• Touch screen• Light pen• Color scanner• OCR/OMR readers, bar code readers, or MICR reader• Microphone• Video camera for video conferences• Fingerprint scanner or other biometric device
• 19- or 21-inch LCD monitor• Color LCD screen on Tablet PC, PDA, or smart phone• 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
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Input and Output Devices for Physically Challenged Users
What input devices are available for those with physical limitations?
p. 197 Fig. 5-48
Keyboards with larger keys Head-mounted pointer controls
pointer on screen
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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
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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
