What was the main disadvantage of vacuum tubes?

A. They were larger in size

B. They consumed a lot of electricity

C. They produced heat and often burned out

D. The operation cost was high

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  1. Which computer was considered the first electronic computer until 1973 when court invalidated the patent?
  2. Abacus was the first
  3. Registers, which are partially visible to users and used to hold conditional, are known as
  4. The magnetic storage chip used to provide non-volatile direct access storage of data and that have no…
  5. The CPU and memory are located on the:
  6. Compilers and interpreters are themselves
  7. What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to…
  8. What is the main difference between a mainframe and a super computer?
  9. Which is considered a direct entry input device?
  10. MSI stands for
  11. Each set of Napier's bones consisted of rods.
  12. A section of code to which control is transferred when a processor is interrupted is known as
  13. What is a compiler?
  14. ABC is a
  15. Time during which a job is processed by the computer is
  16. IBM 1401 is the first computer to enter in Nepal. It belonged to
  17. The data recording format in most of the modern magnetic tape is
  18. A group of magnetic tapes, videos or terminals usually under the control of one master is
  19. Which of the following professions has not been affected by personal computers?
  20. Which is the largest computer?
  21. Who invented the high level language C?
  22. The time for which a piece of equipment operates is called
  23. The two major types of computer chips are
  24. Web cam is an
  25. A normal CD- ROM usually can store up to _________ _data?
  26. The least significant bit of the binary number, which is equivalent to any odd decimal number, is:
  27. On a PC, how much memory is available to application software?
  28. Offline device is
  29. Find out who is not the inventor of transistors among following names
  30. Examples of output devices are