Why Gray Codes are used in k-map instead of binary codes?

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digitalample eye

Tribhuvan University  BIM – 2012
Answer:
Gray codes actually follow adjacency property i.e between two successive gray codes there is only one-bit change and in the binary code, there will be multiple value changes. Because of adjacency property when one plots a k-map, literals can be grouped keeping other literals constant.
So what is gray code?
A numerical code used in computing in which consecutive integers are represented by binary numbers differing in only one digit.
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