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Chapter 3 Input, Output and Storage

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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

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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. 5-3 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

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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. 5-55-6 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 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

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Keyboard and Pointing Devices 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 Link from left navigation, then click Microsoft Surface below Chapter 5

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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

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Gaming and Media Player Controllers What 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 Link from left navigation, then click Wii Remote below Chapter 5

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Gaming and Media Player Controllers What 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

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Other Types of Input What is voice input? Entering input by speaking into a microphone Voice recognition or speech recognition is the computers capability to distinguish spoken words p. 173 Next

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Other Types of Input p. 173 Fig. 5-12 Next What is audio input? Entering sounds into a computer - speech, music, and sound effects

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

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Other Types of Input 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 Link from left navigation, then click Web Cams below Chapter 5

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Other Types of Input 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

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Other Types of Input 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 Types of Input 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

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Other Types of Input 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 Types of Input 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 cards magnetic stripe

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

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Other Types of Input 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

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

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Other Types of Input 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

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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 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 - 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

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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 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 Link from left navigation, then click Ink-Jet Printers below 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 PictBridge is a standard technology that allows you to print pictures directly from a digital camera

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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 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

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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, or smart phone or other personal mobile device 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-quality color 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

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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 Link from left navigation, then click Earphones below Chapter 5

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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

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

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Other Output Devices 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

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Other Output Devices What is an interactive whiteboard? p. 195 Fig. 5-47 Next Touch-sensitive device that displays the image on a connected computer 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. 5-50 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

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Storage What is storage? p. 220 - 221 Fig. 6-1 Next Holds data, instructions, and information for future use Storage medium is physical material used for storage Also called secondary storage

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Storage What is capacity? p. 222 Next Kilobyte (KB)1 thousand Megabyte (MB)1 million Gigabyte (GB)1 billion Terabyte (TB)1 trillion Petabyte (PB)1 quadrillion Number of bytes (characters) a storage medium can hold Exabyte (EB)1 quintillion Zettabyte (ZB)1 sextillion Yottabyte (YB)1 septillion

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Writing Process of transferring items from memory to storage media Writing Storage What is a storage device? p. 222 Next Reading Process of transferring items from storage media to memory Reading Hardware that records and retrieves items to and from storage media Functions as source of input Creates output

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Magnetic Disks What is a hard disk? p. 223 Fig. 6-4 Next High-capacity storage Consists of several inflexible, circular platters that store items electronically Components enclosed in airtight, sealed case for protection Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Perpendicular Recording below Chapter 6

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Next Magnetic Disks What is RAID? p. 226 Redundant Array of Independent Disks Connects multiple smaller disks into a single unit that acts as a single large hard disk

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Next Magnetic Disks What is a miniature hard disk? p. 226 Fig. 6-9 and 6-10 Provide greater storage capacities than flash memory Smaller than notebook computer hard disks A pocket hard drive is a self-contained unit Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Miniature Hard Disks below Chapter 6

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Magnetic Disks What are external hard disks and removable hard disks? p. 226 Fig. 6-11 Next External hard diskfreestanding hard disk that connects to system unit Removable hard diskhard disk that you insert and remove from hard disk drive Used to back up or transfer files

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Magnetic Disks What is online storage? p. 228 Fig. 6-12 Next Others can be authorized to access your data Service on Web that provides storage for minimal monthly fee Files can be accessed from any computer with Web access

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Push the same button to close the tray. Optical Discs What are optical discs? p. 229 Fig. 6-14 Next Most PCs include an optical disc drive Flat, round, portable metal discs made of metal, plastic, and lacquer Can be read only or read/write Insert the disc. Push the button to slide out the tray.

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Optical Discs What is a CD-ROM? p. 231 Fig. 6-17 Next Compact disc read-only memory Cannot erase or modify contents Typically holds 650 MB to 1 GB Commonly used to distribute multimedia and complex software Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click CD-ROMs below Chapter 6

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Optical Discs What are CD-Rs and CD-RWs? p. 232 - 233 Next Must have CD recorder or CD-R drive Cannot erase discs contents CD-R (compact disc-recordable) c disc you can write on once CD-RW (compact disc-rewritable) ce erasable disc you can write on multiple times Must have CD-RW software and CD-RW drive

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Optical Discs What is a DVD-ROM (digital versatile disc-ROM or digital video disc-ROM)? p. 233 Fig. 6-19 Next Must have DVD-ROM drive or DVD player to read DVD-ROM Stores databases, music, complex software, and movies Blu-ray discs have storage capacity of up to 100 GB HD-DVD discs have storage capacity of up to 60 GB

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Tape What is tape? p. 234 Fig. 6-21 Next Magnetically coated plastic ribbon capable of storing large amounts of data at low cost Primarily used for backup

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Miniature Mobile Storage Media What is a USB Flash Drive? p. 237 Fig. 6-24 Next Plugs in a USB port on a computer or mobile device Storage capacities up to 64 GB Making the floppy disk nearly obsolete

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Miniature Mobile Storage Media What is a smart card? p. 237 Fig. 6-25 Next Stores data on microprocessor embedded in small card Input, process, output, and storage capabilities

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Microfilm and Microfiche What are microfilm and microfiche? p. 238 Fig. 6-26 Next Images recorded using computer output microfilm recorder Store microscopic images of documents on roll or sheet of film Microfilm 100 to 215 foot roll of film Microfiche small sheet of film, usually 4 6

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Microfilm and Microfiche How do life expectancies of various media compare? p. 238 Fig. 6-27 Next Microfilm and microfiche have longest life of any storage media