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Digital Electronics

Digital Electronics
The number FF in base-16 systems will be equal to ________ in binary system.

 11111111
 11101110
 10101010
 10011001

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Digital Electronics
The number of digit 1 present in the binary representation of (3 × 512 + 7 × 64 + 5 × 8 + 3) is

 7
 9
 8
 6

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Digital Electronics
A full adder has

 3 inputs, 1 output
 2 inputs, 2 outputs
 3 inputs, 2 outputs
 2 inputs, 1 output

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Digital Electronics
Why encoder is used in the digital electronics ?

 To convert coded information into non coded form
 To convert non coded information into coded form
None of these
 It is used to separate address bus and data bus

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Digital Electronics
The output of a gate is HIGH if and only if all its inputs are LOW. It is true for

 X-NOR
 NOR
 NAND
 X-OR

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Digital Electronics
The output of a gate is LOW if and only if all its inputs are HIGH. It is true for

 NAND
 AND
 X-NOR
 NOR

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MORE MCQ ON Digital Electronics

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