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3.4.1 Self-complementing Codes
- A self complementing code is one thats 9's complement in decimal is the 1's complement in binary.
- Ex: The 9's complement of 7 is 2 in decimal. In 2421 code,
- Note: if a weighted code is self-complementing, the total weight must be 9. In thes respect, BCD code is not self complementing.
- XS3 code is another example of a self-complementing code.