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Digital Electronics

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

 00000001
 00111001
 11000110
 01000110

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Digital Electronics
How many NOR gates are required to obtain AND operation?

 1
 3
 2
 4

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Digital Electronics
Simplified form of the function f = (x+y+xy)(x+z)

 x+y
 x+xyz
 y+xz
 x+yz

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

 9
 12
 10
 6

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Digital Electronics
When will be the output of an AND gate is LOW ?

 When all inputs are HIGH
 When any input is LOW
 When all input is LOW
 When any input is HIGH

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Digital Electronics
Which circuit is used in between two systems having two different codes

 Sequential
 Both A and B
 Conversion
 Combinational

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