Question :
A) 1900
B) 1906
C) 1910
D) 1880
Answer : B
When was vacuum tube invented ?
A) 1900
B) 1906
C) 1910
D) 1880
Answer : B
Description :
Related Questions - 1
Which of the following is used as a primary storage device ?
A) Magnetic drum
B) Hard Disks
C) Floppy
D) All of above
Related Questions - 2
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
Related Questions - 3
CD-ROM is a
A) Semiconductor memory
B) Memory register
C) Magnetic memory
D) None of above
Related Questions - 4
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
Related Questions - 5
Which is considered a direct entry input device ?
A) Optical scanner
B) Mouse and digitizer
C) Light pen
D) All of the above