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Digital Electronics

Digital Electronics
An OR gate has 6 inputs. The number of input words in its truth table are

6
32
64
128

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

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

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Digital Electronics
What logic function is produced by adding an inverter to each input and output of an AND gate?

 X-OR
 NAND
 OR
 NOR

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Digital Electronics
The number A = 01110000 and B = 10101111 are in 2’s complement form .Addition of above two number is

 10101111
 11100000
 00011111
 011100001

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Digital Electronics
A 10 bit A/D conveter is used to digitize an analog signal in the 0 to 6 volt. The maximum peak to ripple voltage that can be allowed in the D.C. supply voltage is

  5.85 mV.
 10 mV.
  6 mV.
 5 mV.

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Digital Electronics
Which of the following gates is known as anticoincidence detector?

 OR gate
 X-NOR gate
 AND gate
 X-OR gate

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