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Digital Electronics

Digital Electronics
What will be the Boolean expression for an inverter logic gate, where input is A and output is G ?

 A= G
 G = Ā
None of these
 G = A

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 0. The gate is either

 an AND or a NOR
 an OR or an X-NOR
 a NAND or an X-OR
 an OR or an X-OR

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

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

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

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Digital Electronics
Why small bubble is given on the output of the NAND gate symbol ?

None of these
 Output is inverted
 Open collector output
 Tristate

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

 OR
 NOR
 AND
 NAND

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