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Digital Electronics

Digital Electronics
In Boolean algebra A.A is equal to

 A
 2A
 A²
 1

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Digital Electronics
Which one of the following is 2’s complement of -68?

 01111100
 11000100
 10111100
 00111100

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Digital Electronics
16’s complement of BABA is?

 4445
 4544
 4546
 4446

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Digital Electronics
The main equation for a D flip flop is

 Q=D
 Q=D'
 Q=0
 Q=1

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Digital Electronics
Extended Binary Coded Decimal Interchange Code is an ________ bit code.

 16
 8
 32
 7

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Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 10
 6
 12
 9

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