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Digital Electronics

Digital Electronics
To add two m-bit numbers, the required number of half adder is

 2m-1
 2m-1
 2m
 2m+1

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Digital Electronics
If two numbers in excess-3 code are added and the result is less than 9, then to get equivalent binary

 0011 is subtracted
 0110 is subtracted
 0110 is added
 0011 is added

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Digital Electronics
How many flip flops are required to build a binary counter circuit to count from 0 to 1023?

  10.
 12.
 24.
  6.

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Digital Electronics
In which of the following codes do the successive characters differ in only 1-bit position?

 cyclic code
 binary code
 2421 code
 8421 code

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Digital Electronics
In the toggle mode a JK flip-flop has

 J = 1, K = 1.
 J = 0, K = 0.
 J = 1, K = 0.
 J = 0, K = 1.

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Digital Electronics
Which of the following is 1’s complement representation of +57

 00000001
 00111001
 01000110
 11000110

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