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
The two major types of computer chips are
A) External memory chip
B) Primary memory chip
C) Microprocessor chip
D) Both b and c
Related Questions - 2
Magnetic disks are the most popular medium for
A) Direct access
B) Sequential access
C) Both of above
D) None of above
Related Questions - 3
in which year was UK’s premier computing event called ?The which computer? started ?
A) 1980
B) 1985
C) 1986
D) 1987
Related Questions - 4
Multi user systems provided cost savings for small business because they use a single processing unit to link several
A) Personal computers
B) Workstations
C) Dumb terminals
D) Mainframes
Related Questions - 5
To produce high quality graphics (hardcopy) in color, you would want to use a/n
A) RGB monitor
B) Plotter
C) Ink-jet printer
D) Laser printer