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Digital Electronics

Digital Electronics
The decimal equivalent of hexadecimal number of 2A0F is

 10767
 17067
 17670
 17607

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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 negative
 must necessarily be positive

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Digital Electronics
The XS-3 code is a

 cyclic code
 self-complementing code
 weighted code
 error-correcting code

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

Base 10
Base 16
Base 8
Base 3

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Digital Electronics
The codes in which each successive code word differs from the preceding one in only one bit position are called

 BCD codes
 sequential codes
 self-complementing codes
 cyclic codes

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Digital Electronics
A ROM has a 16-bit address bus. The number of locations in this memory is

 65536
 1024
 32
 16

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