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
How many address lines are needed to address each machine location in a 2048 x 4 memory chip?
A) 10
B) 11
C) 8
D) 12
Related Questions - 2
What is required when more than one person uses a central computer at the same time ?
A) Light pen
B) Mouse
C) Digitizer
D) Terminal
Related Questions - 3
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 - 4
The basic operations performed by a computer are
A) Arithmetic operation
B) Logical operation
C) Storage and relative
D) All the above
Related Questions - 5
Instructions and memory address are represented by
A) Character code
B) Binary codes
C) Binary word
D) Parity bit