Video: Dab tsi ntawm barcode scanner nyeem?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A barcode scanner feem ntau muaj peb qhov sib txawv ntu nrog rau lub teeb pom kev zoo, thesensor, thiab lub decoder. Feem ntau, a barcode scanner "scans" cov ntsiab lus dub thiab dawb ntawm a barcode los ntawm illuminating lub chaws nrog lub teeb liab, uas yog hloov dua siab tshiab rau hauv cov ntawv txuam.
Tom qab ntawd, nyeem barcode li cas?
A barcode nyeem ntawv (los yog barcode scanner) isan optical scanner uas tuaj yeem nyeem luam tawm barcodes , txiav txim siab cov ntaub ntawv muaj nyob rau hauv lub barcode thiab xa cov ntaub ntawv mus rau lub computer. Zoo li lub scanner flatbed, nws muaj lub teeb pom kev zoo, lub lens thiab lub teeb sensor txhais lus rau optical impulsesin rau hluav taws xob teeb liab.
Ib yam li ntawd, cov ntaub ntawv dab tsi tuav barcode? A barcode pom ntawm ib qho khoom noj khoom haus yuav muaj cov ntaub ntawv sib txawv dua ib barcode ntawm koj daim ntawv tsav tsheb piv txwv. Khoom noj khoom haus cov ntaub ntawv barcode feem ntau muaj cov lus piav qhia luv luv ntawm cov khoom lag luam uas tau hais txog kev teeb tsa hauv ntau lub tshuab hluav taws xob siv hluav taws xob.
Tib neeg kuj nug, lub tshuab luam ntawv barcode puas nyeem cov kab dub lossis dawb?
Lub hom laser barcode scanner nyeem cov lis dej num byreflecting lub teeb los ntawm dub thiab kab dawb ntawm a barcode thiab vim lub laser yog ib leeg kab nws tsuas nyeem horizontally hla lub barcode . Los ntawm 2D barcodes cov ntaub ntawv raug teeb tsa vertically thiab horizontally nkaus xwb imager ua tau kom txiav txim siab tag nrho cov ntaub ntawv.
Cov scanners luam theej duab cov kab dub?
Hauv kev muaj tiag, cov tshuab luam ntawv tsis txhob ntes zeros thiab onesand tsim binary tooj raws li lawv cov zis: lawv ntes sequencesof dub thiab dawb kab txaij , raws li peb tau qhia ntawm no, tab sis hloov lawv ncaj qha mus rau hauv tus lej lej, muab tus lej lej lej ua lawv cov zis.
Pom zoo:
Cov ntaub ntawv dab tsi yog khaws cia hauv barcode?
Lub barcode muaj cov ntaub ntawv hais txog hom khoom, qhov loj me, chaw tsim khoom thiab lub teb chaws ntawm keeb kwm. Nws kuj muaj cov lej kos, kom lub khoos phis tawj tuaj yeem lees paub tias cov ntaub ntawv tau raug nyeem kom raug. Lub barcode tsis muaj nqi. Tus nqi yog tuav nyob rau hauv lub database hloov
Yuav ua li cas txuas kuv barcode scanner rau square?
Txuas Koj Bar Code Scanner Coj mus rhaub: lossis tus xub nqes rau saum toj ntawm Square Sau Npe: Coj mus rhaub Chaw> Kho vajtse> Barcode Scanner> Txuas BarcodeScanner
Scanner input tshiab scanner system txhais li cas?
Scanner tswv yim = tshiab Scanner(System.in); Tsim ib yam khoom tshiab ntawm hom Scanner los ntawm cov qauv nkag ntawm qhov kev zov me nyuam (qhov no tej zaum yuav yog theconsole) thiab int i = input. nextInt() siv lub nextIntMethod ntawm cov khoom ntawd, uas tso cai rau koj nkag mus rau ib co ntawv nyeem thiab nws yuav parsed rau hauv ib tug integer
Yuav ua li cas koj teeb lub barcode scanner?
Ntxig tus tsav tsheb installation disc rau USB barcode scanner rau hauv CD / DVD tsav ntawm lub computer. Tos kom lub qhov rais teeb tsa wizard tshwm, ces nyem 'Nruab,' 'Nruab Scanner Tsav' lossis lwm lub npe zoo sib xws khawm lossis txuas. Ua raws li cov lus qhia ntawm lub vijtsam txhawm rau nruab USB barcode scanner tsav tsheb hauv Windows
Dab tsi yog barcode ntawm cov khoom hu ua?
UPC, luv luv rau universal khoom code, yog hom code luam tawm ntawm cov khw muag khoom ntim khoom los pab txheeb xyuas cov khoom tshwj xeeb. Nws muaj ob feem - themachine-nyeem tau barcode, uas yog ib tug series ntawm tshwj xeeb blackbars, thiab cov cim 12-tus lej hauv qab nws