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Digital Electronics

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

 1 and 3
 0 and 4
 1 and 4
 0 and 3

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

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Digital Electronics
The terms which cannot be combined further in the tabular method are called

 prime implicants
 implicants
 selective prime implicants
 essential prime implicants

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Digital Electronics
What is the requirement of fullsubstractor circuit ?

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

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Digital Electronics
The output of a gate is LOW when at least one of its inputs is HIGH. This is true for

 OR
 NAND
 AND
 NOR

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Digital Electronics
How the digital signals is transmitted through a single conductor ?

 Serial
 Analog
None of these
 Parallel

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