Question :
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
Answer : B
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
Answer : B
Description :
Related Questions - 1
Which is considered a direct entry input device ?
A) Optical scanner
B) Mouse and digitizer
C) Light pen
D) All of the above
Related Questions - 2
Regarding a VDU, Which statement is more correct ?
A) It is an output device
B) It is an input device
C) It is a peripheral device
D) It is hardware item
Related Questions - 3
A set of flip flops integrated together is called ____
A) Counter
B) Adder
C) Register
D) None of the above
Related Questions - 4
When was the world’s first laptop computer introduced in the market and by whom ?
A) Hewlett-Packard, 1980
B) Epson, 1981
C) Laplink Traveling Software Inc, 1982
D) Tandy Model-200, 1985