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Digital Electronics

Digital Electronics
The number of digit 1 present in the binary representation of (3 × 512 + 7 × 64 + 5 × 8 + 3) is

 8
 7
 6
 9

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Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 16
 7
 15
 4

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Digital Electronics
In decimal number system what is MSD

 First digit from right to left
 Mean of all digits
 Middle digit
 First digit from left to right

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

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

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Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 NOR-OR
 AND-OR
 AND-AND
 XOR-NAND

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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?

 X-NOR
 OR
 AND
 X-OR

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