It's about life

Answer of Mr. Tri Djoko Assignment Chapter 6

True False

  1. True
  2. True
  3. False
  4. True
  5. False
  6. False
  7. True
  8. False
  9. False
  10. True
  11. False
  12. False
  13. False

Multiple Choice

  1. D
  2. B
  3. A
  4. D
  5. D
  6. B
  7. C
  8. D


  1. D
  2. J
  3. G
  4. H
  5. F
  6. C
  7. A
  8. E
  9. B
  10. I

Short Answer

  1. Resolution is the number of horizontal and
    vertical pixels in a display device. For example,
    a monitor that has a 1440 3 900 resolution
    displays up to 1440 pixels per horizontal row
    and 900 pixels per vertical row, for a total of
    1,296,000 pixels to create a screen image. Recall
    that a pixel (short for picture element) is a single
    point in an electronic image. A higher resolution
    uses a greater number of pixels and thus
    provides a smoother, sharper, and clearer image.
    As you increase the resolution, however, some
    items on the screen appear smaller

    With LCD monitors and screens, resolution
    generally is proportional to the size of
    the device. For example, a widescreen 19-inch
    LCD monitor typically has a resolu tion of 1440
    3 900, while a widescreen 22-inch LCD monitor
    has a resolution of 1680 3 1050. LCDs are
    geared for a specific resolution, called the native
    resolution. Although you can change the resolution
    to any setting, for optimal results, use the
    monitor’s native resolution setting.

  2. HDTV (high-definition television) is the most
    advanced form of digital television, working with
    digital broadcast signals, transmitting digital
    sound, supporting wide screens, and providing
    resolutions up to 1920 3 1080 pixels. With
    HDTV, the broadcast signals are digitized when
    they are sent via over-the-air (OTA) broadcasts
    from local television networks, satellite, or
    cable. To receive the HDTV signals via OTA
    broadcasts, you need a VHF/UHF antenna; via
    satellite, you need an HDTV-compatible satellite
    receiver/tuner; and via cable, you need an
    HDTV-compatible cable box.

    With game consoles, such as Microsoft’s Xbox
    360, Nintendo’s Wii, and Sony’s PlayStation 3,
    the output device often is a television.

    Users plug one end of a cable in the game
    console and the other end in the video port on
    the television. Home users often prefer the larger
    television displays for game playing, watching
    movies, and browsing the Internet on a television
    connected to a game console.

  3. two wireless technologies for
    printing are Bluetooth and infrared. With Bluetooth
    printing, a computer or other device transmits
    output to a printer via radio waves. The computer
    or other device and the printer do not have to be
    aligned with each other; rather, they need to be
    within an approx i mate 30-foot range. With infrared
    printing, a printer communicates with a computer
    or other device using infrared light waves. To print
    from a smart phone, for example, a user lines up
    the IrDA port on the smart phone with the IrDA
    port on the printer.
  4. An ink-jet printer works
    Step 1
    A small resistor heats the ink,
    causing the ink to boil and
    form a vapor bubble.

    Step 2
    The vapor bubble forces
    the ink through the

    Step 3
    Ink drops onto the paper.

    Step 4
    As the vapor bubble collapses,
    fresh ink is drawn into the firing

    Most dyesublimation
    printers create images that are of
    photographic quality.

    applications requiring high image quality, such
    as photography studios, medical labs, and security
    identification systems, use dye-sublimation
    printers. These high-end printers cost thousands
    of dollars and print images in a wide
    range of sizes. Most dye-sublimation printers
    for the home or small business user, by contrast,
    typically print images in only one or two sizes
    and are much slower than their professional
    counterparts. These lower-end dye-sublimation
    printers are comparable in cost to a photo
    printer based on ink-jet technology. Some are
    small enough for the mobile user to carry the
    printer in a briefcase.

  5. Surround sound systems are available in a variety
    of configurations. For example, a 2.1 speaker system
    contains two speakers and a subwoofer. A 5.1
    speaker system has four sat ellite speakers, a center
    speaker, and a subwoofer. A 6.1 speaker system has
    four satellite speakers, a front center speaker, a rear
    center speaker, and a subwoofer. A 7.1 speaker system
    has four satellite speakers, two side speakers, a
    center speaker, and a subwoofer.

    Audio resolution, which is the number of bytes
    that represent sound in a given time, is stated as
    a bit rate such as 8-bit, 16-bit, or 24-bit. A sound
    card using 8-bit resolution, for example, represents
    a sound with any 1 of 256 values (28), and a
    16-bit sound card uses any 1 of 65,536 values (216).
    Higher resolutions result in better sound quality.
    With 8-bit resolution, the sound quality is similar
    to an AM radio; 16-bit resolution yields optical
    disc-quality sound; and 24-bit resolution is used
    for high-quality digital audio editing.


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This entry was posted on December 6, 2012 by .
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