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 (A)</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 (C)</p> Signup and view all the answers

Which of the following devices uses raster scan display technology?

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

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

<p>Electron beam (B)</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 (A)</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 (C)</p> Signup and view all the answers

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

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

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

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

How are images created in geometry-based graphics applications?

<p>By sampling the geometric elements for viewing (A)</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 (B)</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 (B)</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 (C)</p> Signup and view all the answers

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