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Who invented vacuum tubes?

A. John Bardeen

B. William Shockley

C. Lee de Forest

D. All of above

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  1. RAM is used as a short memory because it is
  2. What is the main difference between a mainframe and a super computer?
  3. A directly accessible appointment calendar is feature of a resident package
  4. ASCII stands for
  5. As compared to the secondary memory, the primary memory of a computer is
  6. The Width of a processor's data path is measured in bits. Which of the following are common data paths?
  7. Chief component of first generation computer was
  8. A CPU contains
  9. Which of the following class of computers cannot support multiple users simultaneously?
  10. John Napier invented Logarithm in
  11. Hardware or software designed to guard against unauthorized access to a computer network is known as…
  12. The two kinds of main memory are:
  13. The two major types of computer chips are
  14. If in a computer, 16 bits are used to specify address in a RAM, the number of addresses will be
  15. Which of the following is correct full form of BCD?
  16. Which device is required for the Internet connection?
  17. Where as a computer mouse moves over the table surface, the trackball is
  18. Napier's Bones were invented in
  19. ENIAC uses
  20. The device used to carry digital data on analogue lines is called as
  21. Who invented vacuum tubes?
  22. A state. is a bi-stable electronic circuit that has
  23. Each set of Napiers bones consisted of ______ rods.
  24. Which method is used to connect a remote computer?
  25. Which of the following is not electro-mechanical computer?
  26. A digital computer did not score over an analog computer in terms of
  27. Programs designed to perform specific tasks is known as
  28. Magnetic tape can serve as
  29. UNIVAC is
  30. Integrated Circuits (ICs) are related to which generation of computers?