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Digital Electronics

Digital Electronics
A three-state buffer has the following output states

 High, Low, Float
 Both A and B
 1, 0, float
 Set, Reset, Halt

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Digital Electronics
What is the requirement of fullsubstractor circuit ?

 Three inputs and one output
 Two inputs and two outputs
 Three inputs and two outputs
 Two inputs and three outputs

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Digital Electronics
If 4 input MUXes drive a 4 input multiplexer, it results a

 8 input MUX
 6 input MUX
 16 input MUX
 4 input MUX

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Digital Electronics
How many stable state/states present in flip-flop ?

 3
 4
 2
 1

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Digital Electronics
In flip flop clock is present but in latch clock is

  present always.
  absent always.
  may be present/absent.
  none.

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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?

 2:1
 1:1
 2:3
 1:2

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