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Digital Electronics

Digital Electronics
Counter is a

  both.
  combinational circuit.
  none.
  sequential circuit.

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either

 a NAND or an X-NOR
 a NAND or an AND
 a NOR or an X-NOR
 a NAND or an X-OR

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Digital Electronics
An X-OR gate gives a high output

 if there are odd number of 1s
 if it has even number of 0s
 if the decimal value of digital word is even
 for odd decimal value.

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Digital Electronics
When will be the output of an AND gate is LOW ?

 When any input is HIGH
 When all input is LOW
 When all inputs are HIGH
 When any input is LOW

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Digital Electronics
What is the minimum number of 2 input NAND gates used to perform the function of 2 input OR gate

 1
 4
 2
 3

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Digital Electronics
When will be the output of an AND gate is HIGH if there are three inputs, A, B, and C ?

 A = 1, B = 0, C = 1
 A = 1, B = 1, C = 1
 A = 0, B = 0, C = 0
 A = 1, B = 1, C = 0

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