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Digital Electronics

Digital Electronics
1 Gigabyte is equal to

 1024 kbytes
 1024 Mbytes
 1024 bytes
 1024 bits

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Digital Electronics
A demultiplexer is a

 N-to-N device
 N-to-1 device
 1-to-1 device
 1-to-N device

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Digital Electronics
What is the minimum number of NAND gates required to realize an X-OR gate?

 4
 3
 6
 5

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Digital Electronics
The effect of stray magnetic field on the actuating torque of a portable instrument is maximum when the operating field of the instrument and the stray fields are

 Perpendicular.
 Inclined at 60°.
  Parallel.
 Inclined at 30°.

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Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 2:3
 2:1
 1:1
 1:2

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Digital Electronics
Which of these circuits will give yield carry with more delay 1. Carry look ahead adder 2. Ripple carry adder

 2.
 both are same
 none
 1.

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