Chapter 5 Input and Output

Chapter 5 Objectives List the characteristics of a keyboard Describe the characteristics of LCD monitors, LCD screens, and CRT monitors 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 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 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 Identify input and output options for physically challenged users Next

What Is Input What is input? Data or instructions entered into the memory of computer Input device is any hardware component that allows users to enter data and instructions p. 166 Fig. 5-1 Next

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 p. 168 Fig. 5-2 Next

Keyboard and Pointing Devices 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 Link from left navigation, then click Air Mouse below Chapter 5 p. 169 Fig. 5-3 Next

Keyboard and Pointing Devices 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 p. 170 Fig. 5-4 Next

Keyboard and Pointing Devices What are a touchpad and a pointing stick? 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 p. 170 Figs. 5-5—5-6 Next

Keyboard and Pointing Devices What is a light pen? Handheld input device that can detect the presence of light Press light pen against screen surface and then press button on pen p. 170 Next

Keyboard and Pointing Devices What is a touch screen? 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 p. 170 - 171 Fig. 5-7 and 5-8 Next

Keyboard and Pointing Devices 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 p. 171 Fig. 5-9 Next

Gaming and Media Player Controllers What are the types of game controllers? 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 p. 172 Fig. 5-10 Next

Gaming and Media Player Controllers What is a touch-sensitive pad? 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 p. 172 Fig. 5-11 Next

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

Other Types of Input What is audio input? Entering sounds into a computer - speech, music, and sound effects MIDI - standard defining how digital musical devices represent sound electronically p. 173 Fig. 5-12 Next

Other Types of Input How is data entered into a smart phone? p. 174 Fig. 5-13 Next

Other Types of Input What is a Tablet PC? Mobile computer Primary input device is a pressure-sensitive digital pen p. 174 -175 Fig. 5-15 Next

Other Types of Input What is a digital camera? Allows you to take digital pictures Images viewable immediately on camera Download to computer Post pictures to Web p. 175 Fig. 5-16 Next

Other Types of Input What is resolution? 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 p. 176 Next

Other Types of Input What is video input? Process of capturing full-motion images and storing them on a computer’s storage medium Digital video (DV) camera records video as digital signals p. 176 Next

Other Types of Input What is a Web cam? 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 Link from left navigation, then click Web Cams below Chapter 5 p. 176 Fig. 5-17 Next

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

Other Types of Input What is video conferencing? Two or more geographically separated people who use a network or the Internet to transmit audio and video data p. 176 Fig. 5-18 Next

Other Types of Input What is a scanner? Light-sensing device that reads printed text and graphics Used for image processing, converting paper documents into electronic images p. 177 Fig. 5-19 Next

Other Types of Input What is a turnaround document? Document that you return to the company that sent it Portion you return has information printed in OCR characters p. 177 Fig. 5-20 Next

Other Types of Input What is an optical reader? Device that uses light source to read characters, marks, and codes and then converts them into digital data Optical character recognition (OCR) reads typewritten characters Optical mark recognition (OMR) reads hand-drawn pencil marks, such as small circles Bar code reader p. 177 - 178 Fig. 5-21 Next

Other Types of Input What is an RFID reader? Reads information on the tag via radio waves Can be handheld devices or mounted in a stationary object p. 178 Fig. 5-22 Next

Other Types of Input What is a magnetic stripe card reader? 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 p. 179 Fig. 5-23 Next

Other Types of Input What is a magnetic-ink character recognition (MICR) reader? Can read text printed with magnetized ink Banking industry almost exclusively uses MICR for check processing p. 179 Fig. 5-24 Next

Other Types of Input What is a point of sale (POS) terminal? Records purchases, processes credit or debit cards, and updates inventory Fingerprint can be linked to a payment method p. 180 - 181 Fig. 5-25 Next

Other Types of Input What is an automated teller machine (ATM)? Self-service banking machine that connects to a host computer through a network p. 180 Fig. 5-26 Next

Other Types of Input What is biometrics? 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 p. 181 Fig. 5-27 Next

Other Types of Input What are examples of biometric technology? 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 p. 181 Fig. 5-28 Next

What is Output What is output? Data that has been processed into a useful form Output device is any hardware component that can convey information to one or more people p. 182 Fig. 5-29 Next

Display Devices What is a display device? Output device that visually conveys text, graphics, and video information Typically used with desktop computers Monitor houses display device as separate peripheral p. 183 - 184 Fig. 5-31 Next

Display Devices What is an LCD monitor? 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 p. 184 -185 Fig. 5-30 Next

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

Display Devices What is a plasma monitor? Uses gas plasma technology Larger screen size and richer colors than LCD, but are more expensive p. 185 Fig. 5-32 Next

Display Devices What is a CRT monitor? Contains cathode-ray tube (CRT) Common sizes are 15, 17, 19, 21, and 22 inches Viewable size is diagonal measurement of actual viewing area p. 186 Fig. 5-33 Next

Display Devices What is the ENERGY STAR program? Encourages manufacturers to create energy-efficient devices that require little power when not in use Monitors and devices meeting guidelines display ENERGY STAR label p. 186 Next

Printers What is a printer? Output device that produces text and graphics on a physical medium Purchasing a printer p. 187 Fig. 5-34 Next

Printers What are the various ways to print documents and pictures? Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Printing Wirelessly below Chapter 5 p. 188 Fig. 5-35 Next

Printers What is a nonimpact printer? 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 p. 189 - 190 Fig. 5-36 Next

Printers What is a photo printer? 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 p. 190 Fig. 5-37 Next

Printers What is a laser printer? 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 p. 190 - 191 Fig. 5-38 Next

Printers What is a thermal printer? 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 p. 191 Fig. 5-39 Next

Printers What is a mobile printer? 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 p. 192 Fig. 5-40 Next

Printers What is a plotter? Sophisticated printer used to produce high-quality drawings Large-format printer creates photo-realistic-quality color prints p. 192 Fig. 5-41 Next

Printers What is an impact printer? 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 p. 192 - 193 Fig. 5-42 Next

Other Output Devices What is an audio output device? 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 p. 193 - 194 Fig. 5-43 Next

Other Output Devices What is a facsimile (fax) machine? 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 p. 194 Next

Other Output Devices What is a multifunction peripheral? Provides functionality of a printer, scanner, copy machine, and fax machine p. 194 Fig. 5-45 Next

Other Output Devices What is a data projector? Device that takes the text and image from computer screen and projects it onto larger screen p. 195 Fig. 5-46 Next

Other Output Devices What is an interactive whiteboard? Touch-sensitive device that displays the image on a connected computer screen p. 195 Fig. 5-47 Next

Putting It All Together What are suggested input and output devices for the home user? 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 p. 196 Fig. 5-48 Next

Putting It All Together What are suggested input and output devices for the small office/home office user? 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 p. 196 Fig. 5-48 Next

Putting It All Together What are suggested input and output devices for the mobile user? 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 p. 196 Fig. 5-48 Next

Putting It All Together What are suggested input and output devices for the power user? 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 p. 196 Fig. 5-48 Next

Putting It All Together What are suggested input and output devices for the large business user? 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 p. 196 Fig. 5-48 Next

Input and Output Devices for Physically Challenged Users What input devices are available for those with physical limitations? Keyboards with larger keys Head-mounted pointer controls pointer on screen p. 197 Fig. 5-49 Next

Input and Output Devices for Physically Challenged Users What other output options are available for visually impaired users? 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 p. 197 Fig. 5-50 Next

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