Question :

When was vacuum tube invented ?


A) 1900
B) 1906
C) 1910
D) 1880

Answer : B

Description :



Related Questions - 1


Which is considered a direct entry input device ?


A) Optical scanner
B) Mouse and digitizer
C) Light pen
D) All of the above

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Related Questions - 2


Which of the following is not an input device ?


A) OCR
B) Optical scanners
C) Voice recognition device
D) COM (Computer Output to Microfilm)

View Answer

Related Questions - 3


The terminal device that functions as a cash register, computer terminal, and OCR reader is the:


A) Data collection terminal
B) OCR register terminal
C) Video Display terminal
D) POS terminal

View Answer

Related Questions - 4


What is the responsibility of the logical unit in the CPU of a computer ?


A) To produce result
B) To compare numbers
C) To control flow of information
D) To do math’s works

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Related Questions - 5


Storage capacity of magnetic disk depends on


A) tracks per inch of surface
B) bits per inch of tracks
C) disk pack in disk surface
D) All of above

View Answer