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Digital Electronics

Digital Electronics
The number of rows in the truth table of a 4-input gate is

 16
 4
 8
 12

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Digital Electronics
The output of a gate is LOW if and only if all its inputs are HIGH. It is true for

 NAND
 NOR
 X-NOR
 AND

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

 Both A and B
 Combinational
 Conversion
 Sequential

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Digital Electronics
In which of the following base systems is 123 not a valid number?

Base 3
Base 16
Base 10
Base 8

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Digital Electronics
Which of the following BCD codes with an odd parity bit included in the end of code group, have error in the code? (I)1001010110000 (II)0100011101100 (III)0111110000011 (IV)1000011000101

 Only (II)
 Both (II)&(III)
 Both (I) & (II)
 Both (I)&(IV)

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Digital Electronics
The decimal equivalent of the highest possible address for an 8-bit address bus is

 8
 256
 128
 255

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