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Which of the following memory medium is not used as main memory system?

A. Magnetic core

B. Semiconductor

C. Magnetic tape

D. Both semiconductor and magnetic tape

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  15. An error in software or hardware is called a bug. What is the alternative computer jargon for it?
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  17. A hybrid computer
  18. In 1999, the Melissa virus was a widely publicised:
  19. The value of each bead in heaven is
  20. Regarding a VDU, Which statement is more correct?
  21. Computers with 80286 microprocessor is
  22. What is the date when Babbage conceived Analytical engine
  23. Which American computer company is called Big Blue?
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  26. Which of the following code used in present day computing was developed by IBM Corporation?
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  30. Operating system, editors, and debuggers comes under?