31. An encoder:

A. is used to send telegraph signals
B. converts an input to a binary number
C. converts a binary number to a decimal number.
D. can have only four keys
E. None of the above

32. Operator interaction directly with the CRT is accomplished via:

A. a digitizing tablet
B. vector scanning
C. a stylus
D. a touch terminal
E. None of the above

33. What two disciplines are usually tied by a common database?

A. Documentation and geometric modeling
B. Computer-aided design and computer-aided manufacturing
C. Testing and analysis
D. Drafting and documentation
E. None of the above

34. Which of the following is a graphical output device?

A. Dot-matrix Printer
B. Plotter
C. Laser Printer
D. Line Printer
E. None of the above

35. A display of a volume model that shows all of its edges is called a:

A. surface model
B. 3-D model
C. wire-frame
D. solid model
E. None of the above