Which technology is used in Compact disks?

A. Mechanical

B. Electrical

C. Electro Magnetic

D. Laser

You can do it
  1. Which of the following is used only for data entry and storage, and never for processing?
  2. A computer consists of
  3. A register organized to allow to move left or right operations is called a
  4. A self replicating program, similar to a virus which was taken from a 1970s science fiction novel by…
  5. What type of device is computer keyboard?
  6. ALU is
  7. All of the following are examples of storage devices EXCEPT:
  8. The first computers were programmed using
  9. Which of the following is not a micro computer?
  10. Which device is required for the Internet connection?
  11. The word Abacus is derived from Abax, a word from
  12. Which is not consisted in a processor
  13. Which of the following memories needs refreshing?
  14. What was the computer invented by Attanasoff and Clifford?
  15. A number which is stored and processed but not in the standard exponential form is called
  16. Which of the following is NOT one of the four major data processing functions of a computer?
  17. Which of the following does not affect the resolution of a video display image?
  18. Where are data and programme stored when the processor uses them?
  19. Once you load the suitable program and provide required data, computer does not need human intervention.…
  20. The central processing unit (CPU) consists of
  21. The contents of information are stored in
  22. Which of the following processors use RISC technology?
  23. A byte consists of
  24. A 32 bit microprocessor has the word length equal to
  25. Which of the following is related to fifth generation computers?
  26. WAN stands for
  27. What is an interpreter?
  28. Which of the following is not anti- viruses' software?
  29. The brain of any computer system is
  30. RAM stands for