The purpose of vacuum tube was to NOT act like

A. an amplifier

B. a switch

C. a router

D. None of above

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

You can do it
  1. Which of the following is the first computer to use Stored Program Concept?
  2. The personnel who deals with the computer and its management put together are called
  3. IBM System/360 is
  4. A kind of scanner MICR is the short form of
  5. ________ is the key to close a selected drop -down list; cancel a command and close a dialog box.
  6. Web cam is an
  7. A technique used by codes to convert an analog signal into a digital bit stream is known as
  8. Which of the following produces the best quality graphics reproduction?
  9. Who invented punched cards?
  10. The word processing task associated with changing the appearance of a document is
  11. Com in Latin is
  12. Which of the following is NOT one of the four major data processing functions of a computer?
  13. In a computer, most processing takes place in
  14. The first computer introduced in Nepal was
  15. Which of the following is not input unit device?
  16. Which converts the user data into machine readable form?
  17. The computer code for the interchange of information between terminals is
  18. In latest generation computers, the instructions are executed
  19. Which of the following does not affect the resolution of a video display image?
  20. A CPU contains
  21. Charles Babbage was awarded by Royal Society for his
  22. Which one of the following is NOT a computer language
  23. The earliest calculating devices are
  24. Is an OOP principle
  25. The metal disks, which are permanently housed in, sealed and contamination free containers are called
  26. When a logic bomb is activated by a time-related event, it is known as a:
  27. The output quality of a printer is measured by
  28. Magnetic disks are the most popular medium for
  29. Who developed a mechanical device in the 17th century that could add, subtract, multiple, divide and…
  30. In _____ mode, the communication channel is used in both directions at the same time?