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Digital Electronics

Digital Electronics
The universal gate is ___________

AND gate
NAND gate
OR gate
None of these

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Digital Electronics
Counter is a

  combinational circuit.
  sequential circuit.
  both.
  none.

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Digital Electronics
A self-complementing code for the decimal digits is created using the weight 4 4 3 -2. The value of 8592 in the code is

 1100 0111 1111 0011
 1100 1011 1111 1001
 1000 0101 1001 0010
 1100 1001 1111 1000

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Digital Electronics
The set of which logic gates is designated as universal gate?

 XNOR, NOR, NAND.
  NOR , NAND.
 XNOR, NOR, NAND.
 NOT, OR , AND.

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Digital Electronics
Which of the following codes is known as the 8421 code?

 ASCII code
 XS-3 code
 Gray code
 BCD code

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Digital Electronics
The AND-OR realization of a combinational circuit requires three 3-input AND gates and one 3-input OR gate. This circuit can be designed using

 three 3-input NAND gates and one 3-input NOR gate
 four input NAND gates only
 three 3-input OR gates and one 3-input AND gate
None of these

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