Which technology is used in Compact disks?

A. Mechanical

B. Electrical

C. Electro Magnetic

D. Laser

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

You can do it
  1. Which device is used as the standard pointing device in a Graphical User Environment?
  2. The scrambling of code is known as:
  3. Compilers and interpreters are themselves
  4. Can you tell what passes into and out from the computer via its ports?
  5. ________is defined as any crime completed through the use of computer technology.
  6. ________ Is the appearance of typed characters?
  7. A memory that does not change its contents without external causes is known as
  8. Which of the following professions has not been affected by personal computers?
  9. A disadvantage of the laser printer is
  10. Which of the following is not a primary storage device?
  11. RAM stands for
  12. Main storage is also called
  13. IBM System/360 is
  14. A number system that has eight different symbols to represent any quantity is known as
  15. The act of retrieving existing data from memory is called
  16. Which of the following have the fastest access time?
  17. Which of the following is not computer language?
  18. For what Antikyathera was used?
  19. ________ is the measurement of things such as fingerprints and retinal scans used for security access.
  20. The metal disks, which are permanently housed in, sealed and contamination free containers are called
  21. Which of the following memory medium is not used as main memory system?
  22. Which of the following is the 1's complement of 10?
  23. Which of the following produces the best quality graphics reproduction?
  24. Each set of Napiers bones consisted of ______ rods.
  25. Reading data is performed in magnetic disk by
  26. A digital computer did not score over an analog computer in terms of
  27. Which type of computers uses the 8-bit code called EBCDIC?
  28. Raw facts and figures about any particular topic are
  29. An input /output device at which data enters or leaves a computer system is
  30. ________ Store data or information temporarily and pass it on as directed by the control unit