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Which technology is used in Compact disks?

A. Mechanical

B. Electrical

C. Electro Magnetic

D. Laser

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  1. When was the world's first laptop computer introduced in the market and by whom?
  2. Storage capacity of magnetic disk depends on
  3. A computer can solve more than one kind of problem. This is related to which of the following characteristics?
  4. An area of a computer that temporarily holds data waiting to be processed is________
  5. A physical connection between the microprocessor memory and other parts of the microcomputer is known…
  6. EEPROM stands for
  7. What does DMA stand for?
  8. A computer consists of
  9. Which of the following processors use RISC technology?
  10. Integrated Circuits (ICs) are related to which generation of computers?
  11. People often call as the brain of computer system
  12. What is the path from which data flow in a computer system is known as
  13. ALU is
  14. Primary memory stores
  15. Modern Computers are very reliable but they are not
  16. Who invented punched cards?
  17. A kind of scanner MICR is the short form of
  18. High level language is also called
  19. The word length of a computer is measured in
  20. ASCII and EBCDIC are the popular character coding systems. What does ASCII stand for?
  21. Which of the following is not anti-viruses software?
  22. Which of the following is not an input device?
  23. A computer programmer
  24. What are the stages in the compilation process?
  25. Which of the following is valid statement?
  26. Which type of computers uses the 8-bit code called EBCDIC?
  27. Which of the following is not an electronic computer?
  28. Which type of computers uses the 8-bit code called EBCDIC?
  29. Most important advantage of an IC is its
  30. Which of the following is not true?