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Digital Electronics

Digital Electronics
Positive integers must be represented by

 Both A and B
 unsigned number
 None of these
 signed numbers

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Digital Electronics
What is the logic which controls a stair case light associated with two switches A and B located at the bottom and top of the stair case respectively?

 OR
 X-NOR
 X-OR
 AND

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Digital Electronics
If in a base b number system, 54/4=13, the base of the number is

 7
 9
 8
 6

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Digital Electronics
Which of the following is 1’s complement representation of -34?

 11011101
 10100010
 01011101
 11011110

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Digital Electronics
A half adder has

 1 input and 1 output
 2 inputs and 2 output
 2 inputs and 1 outputs
 1 input and 2 outputs

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Digital Electronics
A gate is inhibited when its inhibit input is at logic 1. The gate is

 NAND
 OR
 AND
 none of these

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