21. If the period of a sine wave is 0.001 second, the frequency of the sine wave is:
A. 0.001 Hz
B. 1,000 Hz
C. 10,000 Hz
D. 10 Hz
E. None of the above
22. Software is:
A. printer output
B. a set of instructions
C. tape input.
D. a programming language
E. None of the above
23. Which item best describes a CAM technology?
A. Numerical control
B. Drafting
C. Documentation
D. Geometric modeling
E. None of the above
24. The linking of PCs with a communi¬cations system is referred to as:
A. workstations
B. streaming
C. turnkey systems
D. networking
E. None of the above
25. Two of the major processing languages are PROLOG and:
A. LISP
B. COBOL
C. BASIC
D. Pascal
E. None of the above