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Bar Code Exercise Postal Barcodes (Page 1 of 2 For faster sorting of letters, the United States Postal Service encourages companies that send large volumes of mail to use a bar code denoting the ZIP code. The encoding scheme for a five-digit ZIP code is shown in Table 1. There are full-height frame bars on each side. The five encoded digits are followed by a correction digit, which is computed as follows: Add up all digits, and choose the correction digit to make the sum a multiple of 10. For example, the ZIP code 95014 has sum of digits 19, so the correction digit is 1 to make the sum equal to 20 Each digit of the ZIP code, and the correction digit, is encoded according to Table 1, where 0 denotes a half bar and 1 a full bar Note that they represent all combinations of two full and three half bars. The digit can be easily computed from the bar code. For example, 01100 is 0x7 1 x4+1 x 2 0 x 1 0 x 0 6. The only exception is O, which would yield 11 according weight formula Continued on next slide +Wet eas+one function + do not read diyts separately Page 24