labarai

Ko da yake kowane mai karatu yana karanta lambar bariki ta hanyoyi daban-daban, sakamakon ƙarshe shine canza bayanai zuwa siginar dijital sannan zuwa bayanan da za'a iya karantawa ko dacewa da kwamfutoci. Ana kammala ƙaddamar da software a cikin wata na'ura ta daban, ana gane lambar barcode kuma an bambanta ta hanyar decoder, sannan a loda shi zuwa kwamfutar da ke aiki.

Ana amfani da bayanan da ake buƙata don haɗawa ko musayar tare da mai watsa shiri, kuma kowane kida dole ne ya kasance da Layer na zahiri (wanda shine ma'anar ma'anar jiki guda biyu, wanda yake nufin yarjejeniyar sadarwa ta zahiri. Hanyoyi gama gari sune: tashar tashar madannai, tashar tashar jiragen ruwa ko haɗin kai kai tsaye. Lokacin amfani da hanyar haɗin maɓalli na maɓalli, bayanan alamomin barcode da mai karatu ya aiko ana ɗauka ta PC ko tashoshi a matsayin bayanan da aka aiko da maballin nata, kuma a lokaci guda, maɓallan su ma suna iya aiwatar da dukkan ayyuka. Lokacin amfani da haɗin tashar tashar maballin ya yi jinkiri sosai, ko kuma babu wasu hanyoyin mu'amala, za mu yi amfani da hanyar haɗin tashar tashar jiragen ruwa. Akwai ma'anoni guda biyu na haɗin kai tsaye a nan. Ɗayan yana nufin cewa mai karatu yana fitar da bayanai kai tsaye zuwa ga mai masaukin ba tare da ƙarin kayan aikin tantancewa ba, ɗayan kuma yana nufin cewa bayanan da aka yanke suna haɗa kai tsaye zuwa gidan ba tare da amfani da maballin ba. Wasu kalmomin da aka saba amfani da su Dual Interface: Yana nufin cewa mai karatu zai iya haɗa na'urori daban-daban guda biyu kai tsaye, kuma ya daidaita ta atomatik tare da sadarwa tare da kowace tashar, misali: Ana amfani da CCD don haɗa tashar POS ta IBM da rana, da dare. Zai haɗa zuwa tashar bayanai mai ɗaukuwa don ƙirƙira kayayyaki, kuma za ta yi amfani da ginanniyar damar sadarwa guda biyu don yin sauyawa tsakanin na'urorin biyu cikin sauƙi. Ƙwaƙwalwar ƙwaƙwalwa (Flash Memory): Ƙwaƙwalwar ƙwaƙwalwa ta Flash wani guntu ce da ke iya adana bayanai ba tare da samar da wutar lantarki ba, kuma yana iya kammala sake rubuta bayanai nan take. Yawancin samfuran Welch Allyn suna amfani da ƙwaƙwalwar walƙiya don maye gurbin PROMs na asali, yana sa samfurin ya zama mai haɓakawa. HHLC (Mai jituwa Laser Hannu): Wasu tashoshi ba tare da na'urar yankewa ba za su iya amfani da dikodi na waje kawai don sadarwa. Ana amfani da ka'idar wannan hanyar sadarwa, wanda aka fi sani da Laser simulation, don haɗa CCD ko Laser reader da waje Saita na'ura. RS-232 (Shawarwari Standard 232): Ma'auni na TIA/EIA don watsa shirye-shirye tsakanin kwamfutoci da na'urori kamar masu karanta lambar barcode, Modem, da mice. RS-232 yawanci yana amfani da filogi 25-pin DB-25 ko DB- 9-pin toshe 9. Nisan sadarwar RS-232 gabaɗaya yana tsakanin 15.24m. Idan aka yi amfani da mafi kyawun kebul, za a iya tsawaita nisan sadarwa.