Graphical Display Devices Quiz
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Questions and Answers

What is the main disadvantage of the early graphical display devices mentioned in the text?

  • Limited color capability
  • Requires expensive hardware
  • Difficult to draw complex images (correct)
  • Flicker in the screen display
  • What technology improved the early graphical display devices in the 1960's?

  • Direct View Storage Tube (DVST) (correct)
  • Light Emitting Diode (LED)
  • Cathode Ray Tube (CRT)
  • Liquid Crystal Display (LCD)
  • What is the main difference between analog and digital displays in terms of raster scan technology?

  • Analog displays use continuous scanning, while digital displays use discrete pixels (correct)
  • Digital displays have better color capabilities than analog displays
  • Digital displays use continuous scanning, while analog displays use discrete pixels
  • Analog displays have higher resolution than digital displays
  • What is the definition of a 'pixel' in the context of raster scan display technology?

    <p>One dot or picture element of the raster</p> Signup and view all the answers

    How is the raster image stored in a computer or digital display?

    <p>As a matrix of pixels representing the entire screen area</p> Signup and view all the answers

    Which of the following devices uses raster scan display technology?

    <p>Cathode Ray Tube (CRT) displays</p> Signup and view all the answers

    What is the primary advantage of vector display technology over raster display technology?

    <p>All of the above</p> Signup and view all the answers

    What is the main component that draws the picture in a vector display system?

    <p>Electron beam</p> Signup and view all the answers

    What is the purpose of the 'refresh buffer' or 'vector file' in a vector display system?

    <p>To store the definition of the picture as a set of line-drawing commands</p> Signup and view all the answers

    How often are the component lines of a picture redrawn in a random scan vector display system?

    <p>30 to 60 times per second</p> Signup and view all the answers

    What is the main disadvantage of vector display technology compared to raster display technology?

    <p>Lower resolution</p> Signup and view all the answers

    What is the purpose of the 'display program' or 'display file' in a vector display system?

    <p>To store the definition of the picture as a set of line-drawing commands</p> Signup and view all the answers

    What type of graphics applications store mathematical descriptions of geometric elements?

    <p>Geometry-based graphics applications</p> Signup and view all the answers

    Which of the following is an example of a 3D geometry-based graphics application?

    <p>Autodesk 3D Studio Max</p> Signup and view all the answers

    How are images created in geometry-based graphics applications?

    <p>By sampling the geometric elements for viewing</p> Signup and view all the answers

    What is a 'primitive' in the context of geometry-based graphics?

    <p>A basic geometric shape like a line or polygon</p> Signup and view all the answers

    How do users typically interact with geometry-based graphics applications?

    <p>By manipulating the geometric elements, which causes the program to resample and redisplay them</p> Signup and view all the answers

    What is the purpose of combining geometry-based and sample-based graphics in computer graphics?

    <p>To increase the quality of the final product</p> Signup and view all the answers

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