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Compare excess 3 codes and gray code.
Ans.
Excess 3 Codes
1. This is the other form of BCD code. All decimal digits are coded in 4 bit binary code.
2. The code for all decimal digits is obtained by adding decimal 3 to the natural BCD code digit.
3. The code is acquired by adding 3 to the decimal no
4. Self complementing code-helpful in subtraction.
Gray Code
1. Extremely useful code. Also termed as reflected code.
2. All gray code is different from the preceding and succeeding codes through a single bit.
3. Utilized in shaft encoders.
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