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Who invented vacuum tubes?

A. John Bardeen

B. William Shockley

C. Lee de Forest

D. All of above

You can do it
  1. The two kinds of main memory are:
  2. What is the name of the computer terminal which gives paper printout?
  3. A common boundary between two systems is called
  4. Which device is required for the Internet connection?
  5. Which of the following is internal memory?
  6. Napier's Bones were invented in
  7. Which of the following is the first computer to use Stored Program Concept?
  8. Who invented Integrated Circuits?
  9. A system is
  10. What is the name of the display feature that highlights are of the screen which requires operator attention?
  11. Binary circuit elements have
  12. Which of the following is input device?
  13. CAD stands for
  14. Which of the following professions has not been affected by personal computers?
  15. The difference between memory and storage is that memory is _____ and storage is __
  16. What is a brand?
  17. Analog computer works on the supply of
  18. A modem is connected to
  19. The Width of a processor's data path is measured in bits. Which of the following are common data paths?
  20. The term gigabyte refers to
  21. On-line real time systems become popular in ________ generation
  22. MICR stands for
  23. The word Abacus is derived from Abax, a word from
  24. Where as a computer mouse moves over the table surface, the trackball is
  25. Snowbol is an/a________
  26. A collection of related instructions organized for a common purpose is referred to as
  27. Who invented Integrated Circuits?
  28. The difference between memory and storage is that memory is ______ and storage is
  29. An _________ Device is any device that provides information, which is sent to the CPU
  30. RATS stand for