Why are vacuum tubes also called valves?

A. Because they can amplify the weak signals and make them strong

B. Because they can stop or allow the flow of current

C. Both of above

D. None of above

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

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  2. Who invented Mark I?
  3. Which of the following is the most powerful computers?
  4. Which type of computers uses the 8-bit code called EBCDIC?
  5. A modern electronic computer is a machine that is meant for
  6. Storage capacity of magnetic disk depends on
  7. The term gigabyte refers to
  8. A state. is a bi-stable electronic circuit that has
  9. What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to…
  10. Which unit holds data temporarily?
  11. Central Processing Unit is combination of
  12. What are the computers called that performs calculations and comparisons usually in the binary numbering…
  13. Which of the following require large computers memory?
  14. Model 5100 was_____ in 1957.
  15. Any type of storage that is used for holding information between steps in its processing is
  16. What difference does the 5th generation computer have from other generation computers?
  17. An error in software or hardware is called a bug. What is the alternative computer jargon for it?
  18. What are the three decisions making operations performed by the ALU of a computer?
  19. When a file is saved for the first time
  20. A physical connection between the microprocessor memory and other parts of the microcomputer is known…
  21. A computer program that converts an entire program into machine language is called a/an
  22. Identify the true statement
  23. A person who used his or her expertise to gain access to other people's computers to get information…
  24. Serial access memories are useful in applications where
  25. Which of the following is not processing?
  26. Before a disk can be used to store datA. It must be
  27. Which of the following term means to reckon?
  28. The computer size was very large in
  29. The central processing unit (CPU) consists of
  30. IMB launched its first personal computer called IBM-PC in 1981. It had chips from Intel, disk drives…