Chapter 5 Solution

Discovering Computer 2011 – Living in a Digital World
Page 293-294
Lecturer : Tri Djoko Wahjono

True/False

  1. Once data is in memory, the computer interprets and executes instructions to process the data into information. (True)
  2. An input device is any hardware component that allows users to enter data and instructions into a computer. (True)
  3. The command associated with a function key performs the same task within each program with which you are interacting. (False)
  4. A touchpad is a small, flat, rectangular pointing device that is sensitive to pressure and motion. (True)
  5. Touch-sensitive pads typically contain buttons and/or wheels that are operated with a thumb or finger. (False)
  6. To capture a signature, a user speaks his or her name into a signature capture pad. (False)
  7. Resolution is the smallest element in an electronic image. (False)
  8. A whiteboard is a meeting between two or more geographically separated people who use a network or the Internet to transmit audio and video data. (False)
  9. Scanners capture data from a target document, which is the original form of the data. (False)
  10. A flatbed scanner works in a manner similar to a copy machine except it creates a file of the document in memory instead of a paper copy. (True)
  11. A DVD kiosk is a self-service DVD rental machine that connects to a host computer through a network. (True)
  12. A keyguard is a metal or plastic plate placed over the keyboard that allows users to rest their hands on the keyboard without accidentally pressing any keys. (True)

Multiple Choice

  1. C. Ergonomic keyboard
  2. A. Predictive text input
  3. B. Multi-touch
  4. C. Graphics tablet
  5. D. Voice recognition
  6. C. Music production software
  7. C. Radio signals
  8. C. Gesture recognition

Matching

  1. Insertion point, b. symbol on the screen that indicates where the next character typed will appear
  2. Gaming keyboard, g. keyboard designed specifically for users who enjoy playing games on the computer
  3. Ergonomics, d. incorporates comfort, efficiency, and safety in the design of the workplace
  4. Trackball, j. stationary pointing device with a ball on its top or side
  5. Pointing stick, e. pressure-sensitive pointing device shaped like a pencil eraser that is positioned between keys on a keyboard
  6. Kiosk, a. freestanding computer that usually includes a touch screen
  7. Game controller, h. used by video games and computer games as the input device that directs movements and actions of on-screen objects
  8. Gamepad, f. controls the movement and actions of players or objects in video games or computer games
  9. Video capture card, i. converts an analog video signal to a digital signal that a computer can process
  10. Data collection device, c. obtains data directly at the location where the transaction or event takes place

Short Answer

  1. - What are three different types of mouse devices?
    Optical mouse, laser mouse, and air mouse.
    What makes them different from each other?
    What makes them different is the way of each mouse to detect the mouse’s movements. Optical mouse uses devices that emit and sense light to detect the mouse’s movement, Laser mouse uses laser sensors, while Air mouse uses a motion-sensing mouse.
  2. - Name at least five mouse operations.
    Point, Click, Right-Click, Double-Click, Rotate wheel.
    Describe and give examples of each of the mouse operations that you chose.
    Point, Move the mouse until the pointer on the desktop is positioned on the item of choice. e.g : Position the pointer on the screen.
    Click, Press and release the primary mouse button, which usually is the left mouse button. e.g : Select or deselect items on the screen or start a program or program feature.
    Right-Click, Press and release the secondary mouse button, which usually is the right mouse button. e.g : Display a shortcut menu.
    Double-Click, Quickly press and release the left mouse button twice without moving the mouse. e.g : Start a program or program feature.
    Rotate wheel, Roll the wheel forward or backward. e.g : Scroll vertically (up and down).
  3. - What is OCR (optical character recognition)?
    Optical character recognition (OCR) is a technology that involves reading typewritten, computer-printed, or hand-printed characters from ordinary documents and translating the images into a form that the computer can process.
    What is OMR (optical mark recognition)?
    Optical mark recognition (OMR) is a technology that reads hand-drawn marks such as small circles or rectangles.
  4. - What is the most widely used biometric device today?
    The most widely used biometric device today is a fingerprint reader.
    Describe how the device works.
    Fingerprint reader, or scanner, captures curves and indentations of a fingerprint.
  5. - What is the Americans with Disabilities Act (ADA)?
    The Americans with Disabilities Act (ADA) requires any company with 15 or more employees to make reasonable attempts to accommodate the needs of physically challenged workers.
    – How might gesture recognition and computerized implant devices help physically challenged users in the future?

    Gesture recognition and computerized implant devices. Both in the prototype stage, they attempt to provide users with a natural computer interface.
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