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Discovering Computers Fundamentals Fifth Edition Chapter 5 Input and Output.

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Presentation on theme: "Discovering Computers Fundamentals Fifth Edition Chapter 5 Input and Output."— Presentation transcript:

1 Discovering Computers Fundamentals Fifth Edition Chapter 5 Input and Output

2 Chapter 5 Objectives List the characteristics of 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 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 Summarize 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 Identify input and output options for physically challenged users Next

3 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

4 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

5 Keyboard and Pointing Devices What is a mouse? p. 169 Fig. 5-3 Next  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 Link from left navigation, then click Air Mouse below Chapter 5

6 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

7 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

8 Keyboard and Pointing Devices 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

9 Keyboard and Pointing Devices What is a touch screen? p 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 Link from left navigation, then click Microsoft Surface below Chapter 5

10 Keyboard and Pointing Devices What is a digital pen? p. 171 Fig. 5-9 Next  Looks like a ballpoint pen, but uses pressure to write text and draw lines  Used with graphics tablets, flat electronic boards

11 Gaming and Media Player Controllers What are the types of game controllers? p. 172 Fig Next  Gamepads  Joysticks and Wheels  Light gun  Dance pad  Motion-sensing game controller Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Wii Remote below Chapter 5

12 Gaming and Media Player Controllers What is a touch-sensitive pad? p. 172 Fig 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

13 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

14 Other Types of Input p. 173 Fig 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

15 Other Types of Input How is data entered into a smart phone? p. 174 Fig Next

16 Other Types of Input What is a Tablet PC? p Fig Next  Mobile computer  Primary input device is a pressure-sensitive digital pen

17 Other Types of Input What is a digital camera? p. 175 Fig Next  Allows you to take digital pictures  Images viewable immediately on camera  Download to computer  Post pictures to Web

18 Other Types of Input 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

19 Other Types of Input 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

20 Other Types of Input What is a Web cam? p. 176 Fig Next  Web cam is used to capture video and still images, send 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 Link from left navigation, then click Web Cams below Chapter 5

21 Other Types of Input Video: Video Editing on Your Computer Next CLICK TO START

22 Other Types of Input What is video conferencing? p. 176 Fig Next  Two or more geographically separated people who use a network or the Internet to transmit audio and video data

23 Other Types of Input What is a scanner? p. 177 Fig Next  Light-sensing device that reads printed text and graphics  Used for image processing, converting paper documents into electronic images

24 Other Types of Input What is a turnaround document? p. 177 Fig Next  Document that you return to the company that sent it  Portion you return has information printed in OCR characters

25 Other Types of Input What is an optical reader? p Fig 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

26 Other Types of Input What is an RFID reader? p. 178 Fig Next  Reads information on the tag via radio waves  Can be handheld devices or mounted in a stationary object

27 Other Types of Input What is a magnetic stripe card reader? p. 179 Fig 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

28 What is a magnetic-ink character recognition (MICR) reader? Other Types of Input p. 179 Fig Next  Can read text printed with magnetized ink  Banking industry almost exclusively uses MICR for check processing

29 Other Types of Input What is a point of sale (POS) terminal? p Fig Next  Records purchases, processes credit or debit cards, and updates inventory  Fingerprint can be linked to a payment method

30 Other Types of Input What is an automated teller machine (ATM)? p. 180 Fig Next  Self-service banking machine that connects to a host computer through a network

31 Other Types of Input What is biometrics? p. 181 Fig 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 Link from left navigation, then click Biometric Input below Chapter 5

32 Other Types of Input What are examples of biometric technology? p. 181 Fig 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

33 What is Output What is output? p. 182 Fig 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

34 Display Devices What is a display device? p Fig Next  Output device that visually conveys text, graphics, and video information  Typically used with desktop computers  Monitor houses display device as separate peripheral

35 Display Devices What is an LCD monitor? p Fig 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 Link from left navigation, then click Widescreen LCD Monitors below Chapter 5

36 Display Devices Video: SID: Size Matters Next CLICK TO START

37 Display Devices What is a plasma monitor? p. 185 Fig Next  Uses gas plasma technology  Larger screen size and richer colors than LCD, but are more expensive

38 Display Devices What is a CRT monitor? p. 186 Fig 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

39 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

40 Printers What is a printer? p. 187 Fig Next  Output device that produces text and graphics on a physical medium  Purchasing a printer

41 Printers What are the various ways to print documents and pictures? p. 188 Fig Next Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Printing Wirelessly below Chapter 5

42 Printers What is a nonimpact printer? p Fig 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 Link from left navigation, then click Ink-Jet Printers below Chapter 5

43 Printers What is a photo printer? p. 190 Fig 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

44 Printers What is a laser printer? p Fig 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 Link from left navigation, then click Laser Printers below Chapter 5

45 Printers What is a thermal printer? p. 191 Fig 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

46 Printers What is a mobile printer? p. 192 Fig 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

47 Printers What is a plotter? p. 192 Fig Next  Sophisticated printer used to produce high-quality drawings  Large-format printer creates photo-realistic-quality color prints

48 Printers What is an impact printer? p Fig 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 line at a time

49 Other Output Devices What is an audio output device? p Fig 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 Link from left navigation, then click Earphones below Chapter 5

50 Other Output Devices 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

51 Other Output Devices What is a multifunction peripheral? p. 194 Fig Next  Provides functionality of a printer, scanner, copy machine, and fax machine

52 Other Output Devices What is a data projector? p. 195 Fig Next  Device that takes the text and image from computer screen and projects it onto larger screen

53 Other Output Devices What is an interactive whiteboard? p. 195 Fig Next  Touch-sensitive device that displays the image on a connected computer screen

54 Putting It All Together What are suggested input and output devices for the home user? p. 196 Fig 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

55 Putting It All Together What are suggested input and output devices for the small office/home office user? p. 196 Fig 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

56 Putting It All Together What are suggested input and output devices for the mobile user? p. 196 Fig 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

57 Putting It All Together What are suggested input and output devices for the power user? p. 196 Fig Next Power User Input Device Output Device Enhanced keyboard or ergonomic keyboard 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

58 Putting It All Together What are suggested input and output devices for the large business user? p. 196 Fig Next Large Business 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 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

59 Input and Output Devices for Physically Challenged Users What input devices are available for those with physical limitations? p. 197 Fig Next  Keyboards with larger keys  Head-mounted pointer controls pointer on screen

60 Input and Output Devices for Physically Challenged Users What other output options are available for visually impaired users? p. 197 Fig 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

61 Processing and organizing input into output Summary of Input and Output Data and instructions Various techniques of input Commonly used input devices Various methods of output Commonly used output devices Chapter 5 Complete


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