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Digital Electronics

Digital Electronics
The output of a gate is HIGH when at least one of its inputs is LOW. It is true for

 OR
 NAND
 X-OR
 NOR

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Digital Electronics
When will be the output of an AND gate is HIGH if there are three inputs, A, B, and C ?

 A = 1, B = 0, C = 1
 A = 1, B = 1, C = 1
 A = 1, B = 1, C = 0
 A = 0, B = 0, C = 0

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Digital Electronics
If J = K (J and K are shorted) in a JK flip-flop, what circuit is made

 K flip-flop
 T flip-flop
 SR flip-flop
 Shorted JK flip-flop

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Digital Electronics
In Boolean algebra AND is represented by

 -
 ×
 +
 /

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Digital Electronics
Why decoder is used in the digital electronics ?

 To convert coded information into non coded form
 To convert non coded information into coded form
 It is used to separate address bus and data bus
None of these

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Digital Electronics
The number of Boolean functions that can be generated by n variables is equal to

22n
2n
2n-1
2n

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