unbent@ecsvax.UUCP (05/26/84)
==> Anyone out there happen to know the conventions for the UPC Variant E (zero-suppression) barcodes? I'm helping a friend adapt his TRS Model 100 barcode reader to handle alternatives to the UPC Variant A that it comes programmed to read. We've gotten to the point where we can read the individual digits whether they're coded normally or in zero-suppression mode (which turns out to be the reverse of normal), and we know the polynomial which generates the check values for the lookup table. What we don't know--and can't figure out--is WHERE TO PUT (BACK) THE (SUPPRESSED) ZEROS. Any help would be much appreciated! Yours for clearer concepts, --Jay Rosenberg Dept. of Philosophy ...mcnc!ecsvax!unbent Univ. of North Carolina Chapel Hill, NC 27514