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Digital Electronics

Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 4
 7
 16
 15

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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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Digital Electronics
What will be the Boolean expression for an inverter logic gate, where input is A and output is G ?

 A= G
None of these
 G = Ā
 G = A

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

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

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Digital Electronics
A flip flop is a _______ circuit.

 Sequential
 None
 Both A and B
 Combinational

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Digital Electronics
11001, 1001 and 111001 correspond to the 2’scomplement representation of the following set of numbers

 25, 9 and 57 respectively
 -6, -6 and -6 respectively
 -7, -7 and -7 respectively
 -25, -9 and -57 respectively

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