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Digital Electronics

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

 7
 16
 15
 4

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Digital Electronics
The number of rows in the truth table of a 4-input gate is

 16
 12
 8
 4

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Digital Electronics
Which of the following is a self-complementing code?

 XS-3 code
 Hamming code
 Gray code
 cyclic code

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Digital Electronics
For the design of a combinational circuit with four inputs using only NAND gates, the number of K-maps required for the simplification process is

 4
 0
 2
 1

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Digital Electronics
What is the requirement of fullsubstractor circuit ?

 Two inputs and three outputs
 Three inputs and one output
 Three inputs and two outputs
 Two inputs and two outputs

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Digital Electronics
The logic expression AB can be implemented by giving the inputs A and B to a two-input

 X-OR gate
 NAND gate
 NOR gate
 X-NOR gate

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MORE MCQ ON Digital Electronics

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