Computer Fundamentals – Section 4

16. When was the IBM XT microcomputer released in the market?

A. 1970
B. 1971
C. 1987
D. 1986
E. None of the above

Correct Answer: C. 1987

17. Which of the following is not used for storage purposes with mainframe computers?

A. removable disks
B. fixed disks
C. mass storage systems
D. diskettes
E. None of the above

Correct Answer: D. diskettes

18. Which is true for the digital computer?

A. It is less accurate than the analog computer
B. It represents the decimal numbers through a string of binary digits
C. It is used primarily in scientific applications
D. Both (a) and (c)
E. None of the above

Correct Answer: B. It represents the decimal numbers through a string of binary digits

19. Which of the following terminals’ output most closely resembles the output produced by a plotter?

A. graphics terminal
B. POS terminal
C. hardcopy terminal
D. all the above
E. None of the above

Correct Answer: A. graphics terminal

20. What is the main advantage of magnetic core memory over semiconductor RAM memory?

A. more compact and smaller
B. more economical
C. a bit does not have to write after reading
D. nonvolatile
E. None of the above

Correct Answer: D. nonvolatile

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