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Digital Electronics

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

22n
2n
2n
2n-1

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Digital Electronics
Slowest memory element is

 RAM
 Hard Drive
 Cache
 ROM

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Digital Electronics
Which circuit is used in between two systems having two different codes

 Both A and B
 Combinational
 Sequential
 Conversion

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either

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

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Digital Electronics
The output of a NOR gate is high

 only when at least one input is low
 only when at least one input is high
 only when all the inputs are high
 only when all the inputs are low

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Digital Electronics
The maximum positive and negative numbers which can be represented in two’s complement form using n bits are respectively,

 +2n-1,-(2n-1+1)
 +(2n-1-1),-2n-1
 +(2n-1-1),-(2n-1-1)
 +2n-1,-2n-1

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