nkhani

Makanema osiyanasiyana a barcode amatchedwanso owerenga ma barcode, masikaniro a barcode, masinki a barcode, masikelo a barcode ndi masikelo a barcode malinga ndi mayina achikhalidwe. .Kawirikawiri amagwiritsidwa ntchito m'malaibulale, zipatala, masitolo ogulitsa mabuku ndi masitolo akuluakulu, monga njira yolowera yolembera mwamsanga kapena kukhazikika, amatha kuwerenga mwachindunji chidziwitso cha barcode pamapaketi akunja a katundu kapena zinthu zosindikizidwa, ndikulowetsa mu dongosolo la intaneti.

1. Barcode scanner ndi chipangizo chomwe chimagwiritsidwa ntchito powerenga zomwe zili mu barcode. Mapangidwe a barcode scanner nthawi zambiri amakhala magawo otsatirawa: gwero lowala, chipangizo cholandirira, zida zosinthira zithunzi zamagetsi, decoding dera, mawonekedwe apakompyuta.

2. Mfundo yaikulu yogwirira ntchito ya barcode scanner ndi: Kuwala komwe kumatulutsidwa ndi gwero la kuwala kumawalitsidwa pa chizindikiro cha barcode kupyolera mu optical system, ndipo kuwala kowonekera kumajambulidwa pa photoelectric converter kudzera mu optical system kuti apange chizindikiro cha magetsi, ndipo chizindikirocho chimakulitsidwa ndi dera. Mpweya wa analogi umapangidwa, womwe umakhala wolingana ndi kuwala komwe kumawonekera pa chizindikiro cha barcode, ndiyeno amasefedwa ndikuwumbidwa kuti apange chizindikiro cha square wave chofanana ndi chizindikiro cha analogi, chomwe chimatanthauzidwa ndi decoder ngati chizindikiro cha digito chomwe chingavomerezedwe mwachindunji. pa kompyuta.

3. Makina ojambulira barcode wamba amagwiritsa ntchito njira zitatu izi: cholembera chowala, CCD, ndi laser. Onse ali ndi ubwino ndi kuipa kwawo, ndipo palibe scanner yomwe ingakhale ndi ubwino muzonse.