Why are vacuum tubes also called valves?
Because they can amplify the weak signals and make them strong
Because they can stop or allow the flow of current
Both of above
None of above
Answer : B
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2) Who developed a mechanical device in the 17th century that could add, subtract, multiple, divide and find square roots?
3) The accuracy of the floating-point numbers representable in two 16-bit words of a computer is approximately
4) In a computer _____ is capable to store single binary bit.
5) Which is not a computer classification?
