When was vacuum tube invented?

A. 1900

B. 1906

C. 1910

D. 1880

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

You can do it
  1. In analogue computer
  2. The contents of information are stored in
  3. What is the responsibility of the logical unit in the CPU of a computer?
  4. The brain of any computer system is
  5. The word processing task associated with changing the appearance of a document is
  6. Which of the following programming language were used in first generation computers?
  7. Each set of Napiers bones consisted of ______ rods.
  8. An integrated circuit is
  9. Which is an item of storage medium in the form of circular plate?
  10. Which of the following require large computers memory?
  11. Why are vacuum tubes also called valves?
  12. What is the responsibility of the logical unit in the CPU of a computer?
  13. Which of the following memories allows simultaneous read and write operations?
  14. What type of resource is most likely to be a shared common resource in a computer Network?
  15. When was Pascaline invented?
  16. When did arch rivals IBM and Apple Computers Inc. decide to join hands?
  17. An error in computer data is called
  18. The first computer introduced in Nepal was
  19. WAN stands for
  20. A type of channel used to connect a central processor and peripherals which uses multiplying is known…
  21. Which electronic component was made out of semiconductor material?
  22. An approach that permits the computer to work on several programs instead of one is
  23. When was the X window system born?
  24. The digital computer was developed primarily in
  25. A register organized to allow to move left or right operations is called a ____
  26. Chief component of first generation computer was
  27. Napier's Bones were invented in
  28. Programs designed to perform specific tasks is known as
  29. A logic bomb that was created to erupt on Michelangelos birthday is an example of a:
  30. The difference between memory and storage is that memory is _____ and storage is __