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Digital Electronics

Digital Electronics
In a T flip-flop no of input circuit is

 2
 4
 3
 1

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

 AND-AND
 AND-OR
 NOR-OR
 XOR-NAND

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

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

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Digital Electronics
11001, 1001 and 111001 correspond to the 2’scomplement representation of the following set of numbers

 25, 9 and 57 respectively
 -6, -6 and -6 respectively
 -25, -9 and -57 respectively
 -7, -7 and -7 respectively

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Digital Electronics
Which of the following operations is commutative but not associative?

 OR
 NAND
 X-OR
 AND

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Digital Electronics
In a read-only memory information can be stored

 at the time of fabrication
 in any of the above ways depending upon the type of memory
 by the user a number of times
 by the user only once during its life time

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