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Digital Electronics

Digital Electronics
Which of the following codes is known as the 8421 code?

 XS-3 code
 Gray code
 ASCII code
 BCD code

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Digital Electronics
Which of the following gates cannot be used as an inverter?

 NOR
 X-NOR
 NAND
 AND

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Digital Electronics
The number of parity bits in a 12-bit Hamming code is

 5
 6
 4
 8

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Digital Electronics
What is the radix of octal number system ?

 16
 8
 10
 2

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Digital Electronics
The voltage levels for negative logic system

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

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Digital Electronics
(FE35)16 XOR (CB15)16 is equal to

 (FF35)16
 (FF50)16
 (3520)16
 (3320)16

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