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
What was the computer invented by Attanasoff and Clifford ?
A) Mark I
B) ABC
C) Z3
D) None of above
Related Questions - 2
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
Related Questions - 3
The two kinds of main memory are :
A) Primary and secondary
B) Random and sequential
C) ROM and RAM
D) All of above
Related Questions - 4
A modern electronic computer is a machine that is meant for
A) Doing quick mathematical calculations
B) Input, storage, manipulation and outputting of data
C) Electronic data processing
D) Performing repetitive tasks accurately
Related Questions - 5
Which of the following IC was used in third generation of computers ?
A) SSI
B) MSI
C) LSI
D) Both a and b