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Digital Electronics

Digital Electronics
The hex address of the 256th memory location is

 00100
 001FF
 00FFF
 000FF

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Digital Electronics
What logic function is produced by adding inverters to the inputs of an OR gate?

 NOR
 X-NOR
 NAND
 AND

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Digital Electronics
The boolean algebra is mostly based on

 De Morgans theorem
 Standard theorem
 Boolean theorem
 De Morpans theorem

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

 G = A
 A= G
 G = Ā
None of these

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Digital Electronics
The voltage levels for negative logic system

 must necessarily be negative
 must necessarily be positive
 may be negative or positive
 must necessarily be 0 V and –5 V

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Digital Electronics
A three-state buffer has the following output states

 High, Low, Float
 Set, Reset, Halt
 1, 0, float
 Both A and B

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