iindaba

Nangona umfundi ngamnye efunda iibhakhowudi ngeendlela ezahlukeneyo, isiphumo sokugqibela kukuguqula ulwazi kwimiqondiso yedijithali kwaye emva koko kwidatha enokufundwa okanye ehambelanayo neekhompyuter. Isoftware yokudikhowuda kwisixhobo esahlukileyo igqityiwe, ibhakhowudi yamkelwa ize yahlulwe yidekhowuda, ize emva koko ifakwe kwikhompyutha yokusingatha.

Ukulayisha idatha kufuneka idityaniswe okanye idityaniswe nomninimzi, kwaye ujongano ngalunye kufuneka lube nemigangatho emibini eyahlukeneyo: enye yilayile ebonakalayo (i-hardware), kwaye enye ingqimba enengqiqo, ebhekisela kwiprotocol yonxibelelwano. Iindlela zojongano oluqhelekileyo zezi: ibhodi yebhodi yezitshixo, izibuko lothotho okanye uqhagamshelo oluthe ngqo. Xa usebenzisa indlela yojongano lwebhodibhodi, idatha yeempawu zebhakhowudi ezithunyelwe ngumfundi zithathwa yiPC okanye i-terminal ukuba ibe yidatha ethunyelwe yikhibhodi yayo, kwaye kwangaxeshanye, iikhibhodi zabo zinokwenza yonke imisebenzi. Xa usebenzisa udibaniso lwezibuko lwebhodi lucotha kakhulu, okanye ezinye iindlela zojongano azifumaneki, siza kusebenzisa uthotho lwendlela yoqhagamshelwano lwezibuko. Kukho iintsingiselo ezimbini zoqhagamshelwano oluthe ngqo apha. Enye ithetha ukuba umfundi ukhupha ngokuthe ngqo idatha kwinginginya ngaphandle kwezixhobo ezongezelelweyo zokudibanisa, kwaye enye ithetha ukuba idatha edibeneyo iqhagamshelwe ngokuthe ngqo kumamkeli ngaphandle kokusebenzisa ikhibhodi. Amanye amagama asetyenziswa ngokuqhelekileyo kwi-Dual Interface: Kuthetha ukuba umfundi unokudibanisa ngokuthe ngqo izixhobo ezibini ezahlukeneyo, kwaye aqwalasele ngokuzenzekelayo kwaye anxibelelane ne-terminal nganye, umzekelo: iCCD isetyenziselwa ukudibanisa i-terminal ye-IBM ye-POS emini, nasebusuku. Iya kuqhagamshela kwi-terminal yedatha ephathekayo yoluhlu lwempahla, kwaye isebenzise isakhono sojongano olwakhelwe ngaphakathi ukwenza utshintsho phakathi kwezixhobo ezibini lula kakhulu. Imemori edanyazayo (Flash Memory): Inkumbulo edanyazayo yitshiphu enokugcina idatha ngaphandle konikezelo lwamandla, kwaye inokugqiba ukubhalwa kwakhona kwedatha ngephanyazo. Uninzi lweemveliso ze-Welch Allyn zisebenzisa imemori ekhanyayo ukuze ithathe indawo yee-PROM zokuqala, okwenza imveliso iphuculwe ngakumbi. I-HHLC (I-Laser Ebambe Isandla Iyahambelana): Ezinye iitheminali ezingenazo izixhobo zokudikhowuda zinokusebenzisa idikhowuda yangaphandle ukunxibelelana. Iprothokholi yale ndlela yonxibelelwano, eyaziwa ngokuba yi-laser simulation, isetyenziselwa ukudibanisa iCCD okanye isifundi selaser kunye nangaphandle Seta idikhowuda. I-RS-232 (uMgangatho oCetyisiweyo wama-232): Umgangatho we-TIA/EIA wogqithiso lothotho phakathi kweekhompyutha kunye neeperipheral ezifana nebarcode readers, iModem, kunye neempuku. I-RS-232 ngokuqhelekileyo isebenzisa iplagi ye-25-pin DB-25 okanye iplagi ye-9-pin DB- 9. Umgama wonxibelelwano we-RS-232 ngokubanzi ungaphakathi kwe-15.24m. Ukuba intambo engcono isetyenziswe, umgama wonxibelelwano unokwandiswa.