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Digital Electronics

Digital Electronics
Which of the following is a self-complementing code?

 cyclic code
 Hamming code
 Gray code
 XS-3 code

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Digital Electronics
When will be the output of an AND gate is LOW ?

 When any input is HIGH
 When all input is LOW
 When any input is LOW
 When all inputs are HIGH

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Digital Electronics
(11011) 2 in BCD 8421 code is

 00100111
 11011001
 00011011
 01101100

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Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 6
 10
 9
 12

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Digital Electronics
The binary equivalent of hexadecimal number 4F2D is

 0100 1111 0010 1100
 0101 1111 0010 1100
 0100 1111 0010 1101
 0100 1110 0010 1101

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Digital Electronics
A device which converts BCD into octal is called

 decoder
 code converter
 demultiplexer
 encoder

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