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Digital Electronics

Digital Electronics
For 4 bit parallel addition, we need ________ half adder(s) and ________ full adder(s)

 0 and 4
 1 and 4
 1 and 3
 0 and 3

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Digital Electronics
How many flip flops are required to build a binary counter circuit to count from 0 to 1023?

  10.
 12.
 24.
  6.

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Digital Electronics
The output of a gate is HIGH if and only if all its inputs are LOW. It is true for

 X-OR
 X-NOR
 NOR
 NAND

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Digital Electronics
What is the gray code for the binary 101011?

 110101
 111110
 011111
 101011

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

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

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Digital Electronics
When will be the output of a NOT gate is LOW ?

None of these
 the input is HIGH.
 the input is LOW.
 the input is HIGH and LOW.

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