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Digital Electronics

Digital Electronics
If a Hexadecimal number needs to convert to binary. For each hexadecimal digit, there will be how many bits

 1
 2
 4
 8

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Digital Electronics
Which of these sets of logic gates are designated as universal gates?

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

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Digital Electronics
A NAND gate is called a universal logic element because

All the minization techniques are applicable for optimum NAND gate realization
Any logic function can be realized by NAND gates alone
It is used by everybody
Many digital computers use NAND gates.

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Digital Electronics
The number of Boolean functions that can be generated by n variables is equal to

2n
22n
2n-1
2n

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Digital Electronics
The number of comparators in a parallel conversion type 8-bit analog to digital converter is

  255.
 256.
  8.
 16.

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Digital Electronics
What are the values of R1 and R2 respectively in the expression (235)R1 = (565)10 = (1065)R2

 16, 8
 6, 16
 12, 8
 8, 16

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