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In Gray coding, the adjacent code values differ by _______(a) single bit(b) 3 bits(c) 10 bits(d) 0 bitI had been asked this question during an interview.Asked question is from Boolean Algebra in chapter Boolean Algebra and Modeling Computations of Discrete Mathematics

Answer»

Correct CHOICE is (a) single bit

For explanation: In Gray coding, the adjacent code values differ only by a single bit. If the GIVEN code-word is 01, then the previous and the next code-words are to be 11 or 00 but cannot be 10 in any case. Each cell within a K-map has a definite place-value which is obtained by using this encoding technique. The rows and the columns of the table USE Gray code-labeling which in turn represents the values of the corresponding input variables and each K-map cell can be addressed using a unique Gray Code-Word.


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