iindaba

Izikena zebhakhowudi ezahlukeneyo zikwabizwa ngokuba ngabafundi bekhowudi yebhakhowudi, izikena zebhakhowudi, izikena zebhakhowudi, izikena zebhakhowudi kunye nezikena zebhakhowudi ngokwamagama esintu. .Esetyenziswa ngokuqhelekileyo kwiilayibrari, izibhedlele, izitolo zeencwadi kunye neevenkile, njengendlela yokufaka igalelo lokubhalisa ngokukhawuleza okanye ukulungiswa, inokufunda ngokuthe ngqo ulwazi lwebhakhowudi kwipakethe yangaphandle yempahla okanye umba oshicilelweyo, kwaye uyifake kwinkqubo ye-intanethi.

1. Iskena sebhakhowudi sisixhobo esisetyenziselwa ukufunda ulwazi olukwibhakhowudi. Ubume beskena sebhakhowudi ngokuqhelekileyo zizinto ezilandelayo: umthombo wokukhanya, isixhobo sokufumana, amacandelo okuguqula i-photoelectric, i-decoding circuit, i-computer interface.

2. Umgaqo osisiseko osebenzayo weskena sebarcode kukuba: Ukukhanya okukhutshwe ngumthombo wokukhanya kugxininiswe kwisimboli sebhakhowudi ngenkqubo ye-optical system, kwaye ukukhanya okubonakalisiweyo kubonakaliswe kwi-photoelectric converter ngokusebenzisa inkqubo ye-optical ukuvelisa isignali yombane, kwaye umqondiso uyandiswa yisekethe. Umbane we-analog uyaveliswa, olingana nokukhanya okubonakaliswe kwisimboli yebhakhowudi, emva koko ihluzwe kwaye ibunjwe ukwenza umqondiso wamaza osisikwere ohambelana nomqondiso we-analog, etolikwa yidekhowuda njengophawu lwedijithali olunokwamkelwa ngokuthe ngqo. ngekhompyuter.

3. Izikena zebhakhowudi eziqhelekileyo zidla ngokusebenzisa ezi teknoloji zintathu zilandelayo: usiba lokukhanya, iCCD, kunye nelaser. Zonke zineenzuzo zazo kunye nezingeloncedo, kwaye akukho scanner inokuba neenzuzo kuzo zonke iinkalo.