The erroneous reading from the UPC symbol is given by 0 7 e 3 1 0 0 0 0 4 2 1, where e is the erroneous digit value. The value of e is _____.
Fill in the blank(s) with the appropriate word(s).
CSD formula must produce 1. CSD = [210 – 3(0+e+1+0+0+2) – (7+3+0+0+4)]mod(10) = [210 –3(e+3) – 14)]mod(10) =[210 – 23 –3e]mod(10) =[187 –3e]mod(10) =1 ? e=2
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