Thaum yuav khoom ib qho twg, piv txwv li, tshuaj yej, txhua tus neeg xav kom paub meej tias nws tau cog thiab ntim hauv tib lub tebchaws. Thiab paub ib qho twg. Qhov barcode yuav pab koj xam, tshwj xeeb tshaj yog txij hnub no nws tuaj yeem txiav tau yooj yim thiab ntau cov ntaub ntawv muaj txiaj ntsig tuaj yeem tau txais.
Tsim nyog
- - cov cim barcodes;
- - lub teb chaws barcode rooj
Cov Lus Qhia
Kauj ruam 1
Tus lej barcode yog cov kev teeb tsa cov cim geometric uas tau npaj raws li ib co qauv. Raws li txoj cai, nws muaj txoj kab ntsug ntsug ntawm ntau qhov dav. Nov yog ib lub cim tshwj xeeb. Qhov nrov tshaj plaws niaj hnub no yog 13-ntsis European code EAN-13, qhia hauv xyoo 1977.
Kauj ruam 2
Xyuam xim rau cov khoom lag luam barcode. Cov lej tau txiav txim siab raws li hauv qab no: thawj ob yog lub teb chaws code, tsib tom ntej yog cov chaw tsim khoom, thiab tsib tom ntej yog cov khoom lag luam, nws cov khoom, qhov loj me, qhov hnyav, xim. Thiab tus lej kawg yuav pab xyuas kom pom qhov tseeb ntawm tus lej cim nws tus kheej
Kauj ruam 3
Txhawm rau txiav txim siab rau lub tebchaws, siv cov npe ntawm cov lej hauv paus: 000-139 Tebchaws Asmeskas 300-379 Fabkis 400-440 Lub Tebchaws Yelemees 450-459 490-499 Nyiv 460-469 Russia 47909 Sri Lanka 481 Belarus482 Ukraine 500-509 Great Britain 520 Tim Nkij teb chaws 540- 549 Belgium, Luxembourg 560 Portugal 640-649 Finland 690-695 Suav Tebchaws Suav 700-709 Norway 729 Israel 730-739 Sweden 750 Mexico 754-755 Canada 760-769 Switzerland 779 Argentina 789-790 Brazil 800-839 Ltalis 840-849 Spain 850 Tebchaws Cuba 870-879 Netherlands 890 Is Nrias teb
