nkhani

Ngakhale kuti wowerenga aliyense amawerenga ma barcode m'njira zosiyanasiyana, chotsatira chake ndikusintha zidziwitso kukhala ma siginecha a digito ndiyeno kukhala deta yomwe imatha kuwerengedwa kapena yogwirizana ndi makompyuta. Pulogalamu ya decoder mu chipangizo china imamalizidwa, barcode imazindikiridwa ndikusiyanitsidwa ndi decoder, kenako imakwezedwa pamakompyuta omwe ali nawo.

Kuyika deta kuyenera kulumikizidwa kapena kulumikizidwa ndi wolandirayo, ndipo mawonekedwe aliwonse ayenera kukhala ndi magawo awiri osiyana: imodzi ndi gawo lakuthupi (hardware), ndipo linalo ndi gawo lomveka, lomwe limatanthawuza njira yolumikizirana. Njira zofananira ndi izi: doko la kiyibodi, doko lachinsinsi kapena kulumikizana mwachindunji. Mukamagwiritsa ntchito njira yolumikizira kiyibodi, ma data azizindikiro za barcode omwe amatumizidwa ndi owerenga amawonedwa ndi PC kapena terminal kuti ndizomwe zimatumizidwa ndi kiyibodi yake, ndipo nthawi yomweyo, makibodi awo amathanso kuchita ntchito zonse. Mukamagwiritsa ntchito doko la kiyibodi ndikuchedwa kwambiri, kapena njira zina zolumikizira sizikupezeka, tidzagwiritsa ntchito njira yolumikizira doko. Pali matanthauzo awiri a kulumikizana mwachindunji apa. Chimodzi chimatanthawuza kuti owerenga amatulutsa deta mwachindunji kwa wolandirayo popanda zida zowonjezera zolembera, ndipo zina zimatanthauza kuti deta yosindikizidwa imagwirizanitsidwa mwachindunji ndi wolandirayo popanda kugwiritsa ntchito kiyibodi. Mawu ena omwe amagwiritsidwa ntchito kwambiri ndi Dual Interface: Amatanthauza kuti owerenga amatha kulumikiza zida ziwiri zosiyana, ndikudzipangira yekha ndikulumikizana ndi terminal iliyonse, mwachitsanzo: CCD amagwiritsidwa ntchito kulumikiza potengerapo POS ya IBM masana, komanso usiku. Idzalumikizana ndi chotengera cha data chonyamula katundu, ndikugwiritsa ntchito mawonekedwe apawiri kuti apangitse kusinthana pakati pa zida ziwirizi kukhala kosavuta. Memory Flash (Flash Memory): Memory ya Flash ndi chipangizo chomwe chimatha kusunga deta popanda magetsi, ndipo chimatha kumaliza kulembanso deta pompopompo. Zambiri mwazogulitsa za Welch Allyn zimagwiritsa ntchito kukumbukira kwa flash kuti zilowe m'malo mwa ma PROM oyambilira, zomwe zimapangitsa kuti zinthuzo zikhale zosinthika. HHLC (Hand Held Laser Compatible): Ma terminals ena opanda zida zolembera amatha kugwiritsa ntchito decoder yakunja polumikizana. Ndondomeko ya njira yolankhuliranayi, yomwe imadziwika kuti laser simulation, imagwiritsidwa ntchito polumikiza CCD kapena laser reader ndi kunja Ikani decoder. RS-232 (Muyezo Wovomerezeka wa 232): Muyezo wa TIA/EIA wamapatsirana pakati pa makompyuta ndi zotumphukira monga zowerengera barcode, Modem, ndi mbewa. RS-232 nthawi zambiri imagwiritsa ntchito pulagi ya 25-pin DB-25 kapena pulagi ya 9-pin DB- 9. Mtunda wolumikizana wa RS-232 nthawi zambiri umakhala mkati mwa 15.24m. Ngati chingwe chabwino chikugwiritsidwa ntchito, mtunda wolankhulana ukhoza kutalikitsidwa.