Question :

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


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

View Answer

Related Questions - 2


If in a computer, 16 bits are used to specify address in a RAM, the number of addresses will be


A) 216
B) 65,536
C) 64K
D) Any of the above

View Answer

Related Questions - 3


Which type of computers uses the 8-bit code called EBCDIC ?


A) Minicomputers
B) Microcomputers
C) Mainframe computers
D) Super computer

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Related Questions - 4


A dumb terminal has


A) an embedded microprocessor
B) extensive memory
C) independent processing capability
D) a keyboard and screen

View Answer

Related Questions - 5


Abacus was the first


A) electronic computer
B) mechanical computer
C) electronic calculator
D) mechanical calculator

View Answer