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".

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  1. A typical personal computer used for business purposes would have of RAM.
  2. IMB launched its first personal computer called IBM-PC in 1981. It had chips from Intel, disk drives…
  3. The qualitative or quantitative attribute of a variable or set of variables is termed as
  4. Who built the world's first electronic calculator using telephone relays, light bulbs and batteries?
  5. In a computer, most processing takes place in
  6. Com in Latin is
  7. Which of the following is correct full form of BCD?
  8. To prevent the loss of data during power failures, use a(n):
  9. Which of the following is the first computer to use Stored Program Concept?
  10. The microcomputer, Intel MCS-80 is based on the widely used Intel
  11. Which of the following class of computers can process physical quantities such as speed?
  12. The difference between memory and storage is that memory is _____ and storage is __
  13. The term gigabyte refers to
  14. Chief component of first generation computer was
  15. Which of the following is not a valid size of a Floppy Disk?
  16. Who invented Slide Rules?
  17. Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name…
  18. Second Generation computers were developed during
  19. FORTRAN programming language is more suitable for
  20. Daisy wheel, Drum, chain etc are the ________
  21. Which of the following is not a micro computer?
  22. Which of the following machine was not invented by Charles Babbage?
  23. Which of the following is an example of fifth generation computer?
  24. Which of the following registers is loaded with the contents of the memory location pointed by the PC?
  25. Large transaction processing systems in automated organisations use
  26. Why ABC computer is called so?
  27. A song being played on computer speaker is
  28. Which language was devised by Dr. Seymour Cray?
  29. The thing that eventually terminates a worm virus is a lack of:
  30. ________ computer is small general purpose micro computer, but larger than portable computer