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Digital Electronics

Digital Electronics
Consider the operation 24+17 = 40 .What is the correct base of number so that operation is correct?

 12
 13
 11
 10

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Digital Electronics
The voltage levels for negative logic system

 must necessarily be positive
 must necessarily be 0 V and –5 V
 may be negative or positive
 must necessarily be negative

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Digital Electronics
8421 code is

 alphanumeric code
 weighted code
 non-weighted code
 self-complementing code

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Digital Electronics
A device which converts 2421 code into 8421code is called a

 code encoder
 coder
 code decoder
 code converter

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Digital Electronics
The number of comparators in a parallel conversion type 8-bit analog to digital converter is

 16.
 256.
  255.
  8.

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Digital Electronics
In a T flip-flop no of input circuit is

 3
 1
 2
 4

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