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Digital Electronics

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

 101011
 110101
 011111
 111110

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Digital Electronics
Digital computers are more widely used as compared to analog computers, because they are

Easier to maintain
Always more accurate and faster
Useful over wider ranges of problem types
Less expensive

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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
 three 3-input OR gates and one 3-input AND gate
 four input NAND gates only
None of these

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Digital Electronics
A byte is equal to ________ bits.

 4
 8
 32
 16

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

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

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Digital Electronics
NAND. gates are preferred over others because these

have lower fabrication area
consume least electronic power
can be used to make any gate
provide maximum density in a chip.

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