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
Which of the following storage devices can store maximum amount of data ?
A) Floppy Disk
B) Hard Disk
C) Compact Disk
D) Magneto Optic Disk
Related Questions - 3
Which is used for manufacturing chips ?
A) Bus
B) Control unit
C) Semiconductors
D) A and b only
Related Questions - 4
What is the main difference between a mainframe and a super computer?
A) Super computer is much larger than mainframe computers
B) Super computers are much smaller than mainframe computers
C) Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many programs concurrently
D) Supercomputers are focused to execute as many programs as possible while mainframe uses its power to execute few programs as fast as possible.
Related Questions - 5
Which of the following is not an input device ?
A) OCR
B) Optical scanners
C) Voice recognition device
D) COM (Computer Output to Microfilm)