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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!telecom-request
- Date: Sun, 3 Jan 1993 02:05:47 GMT
- From: dcg5662@hertz.njit.edu (Dave Grabowski)
- Newsgroups: comp.dcom.telecom
- Subject: Re: Format of ZIP Code Bars on Envelopes
- Message-ID: <telecom13.3.6@eecs.nwu.edu>
- Organization: New Jersey Institute of Technology, Newark, N.J.
- Sender: Telecom@eecs.nwu.edu
- Approved: Telecom@eecs.nwu.edu
- X-Submissions-To: telecom@eecs.nwu.edu
- X-Administrivia-To: telecom-request@eecs.nwu.edu
- X-Telecom-Digest: Volume 13, Issue 3, Message 6 of 12
- Lines: 21
-
- {The New York Times} had a short article with diagram that explained
- the mysterious barcodes on January 28, 1990. Here's the gist (jist?)
- of it:
-
- Bars are divided into sets of five. Within a set, each bar,
- left-to-right, represents the numbers 7, 4, 2, 1, and 0. In each set
- of bars, only two are tall. These two represent the numbers that
- should be added to get a digit. (By convention, 7 + 4 = 0).
-
- The barcode starts and ends with a tall bar. The check digit is the
- number that would be required so that the sum of all digits plus the
- check digit is evenly divisible by ten. i.e., if the zip+4 code was
- 15230-9821 (digits add to 31), the check digit would be 9, because
- 31+9=40, which is divisible by 10.
-
-
- Dave
- Kappa Xi Kappa - Over & Above! dcg5662@hertz.njit.edu
- 9 Sussex Ave., Newark, NJ (car theft capital USA) 70721.2222@compuserve.com
-
-