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Digital Electronics

Digital Electronics
A single flip-flop can be cleared (reset) to

 Both A and B
 None
 1
 0

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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
 1:1
 1:2
 2:1

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Digital Electronics
X + X.Y = ?

 X
 0
 1
 Y

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Digital Electronics
When an input signal 1 is applied to a NOT gate, the output is ___________.

1
Either 0 & 1
None of these

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Digital Electronics
In SSI, the number of gate circuits per chip is

 < 25
 < 6
 < 12
 < 20

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Digital Electronics
Consider the following multiplication: (10w1z) × (15)10 = (y01011001)2 Which one of the following gives appropriate values of w,y and z?

 w = 1,y = 1,z = 1
 w = 0,y = 0,z = 1
 w = 0,y = 1,z = 1
 w = 1,y = 1,z = 0

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