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Digital Electronics

Digital Electronics
Positive integers must be represented by

 None of these
 signed numbers
 unsigned number
 Both A and B

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Digital Electronics
A device which converts 2421 code into 8421code is called a

 coder
 code decoder
 code encoder
 code converter

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Digital Electronics
If a Hexadecimal number needs to convert to binary. For each hexadecimal digit, there will be how many bits

 8
 2
 1
 4

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Digital Electronics
The output of a gate is HIGH when at least one of its inputs is LOW. It is true for

 OR
 NOR
 X-OR
 NAND

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Digital Electronics
1s Complement of 11001010 is

 11001011
 00110101
 11001001
 00110111

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

 ASCII code
 BCD code
 Gray code
 XS-3 code

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