Ezintambo ezingabonakaliyo. links Learning

izixhobo zonxibelelwano Modern kunye nemijelo nisikhonze kungekuphela nje umlamleli ukuba ukudluliselwa kolwazi. Bona banakho ukubonelela nokuxhasa umsebenzi iindlela kunye nezixhobo, liliso emsebenzini kwabasebenzi zokulawula ukude iteknoloji ezintsonkothileyo.

Malunga Iintlobo uxhulumaniso sele uthe lukhulu. Siya bhala nje. Ngoko ke, ukuba ukudluliselwa kwedata , ungasebenzisa kusungulwe, ngomnxeba, unomathotholo, inkqubo ephilileyo zosasazo, umabonwakude, satellite kunye nonxibelelwano mobile, neefomathi amatsha (3G, 4G, njalo-njalo), igxunyekwe ikhompyutha kunye iinethiwekhi ze-wireless. Kulo mzekelo, enkosi uphuhliso lobuchwepheshe endle yonxibelelwano kunye utshintshe nje, umgangatho kunye isantya sebhithi buyanda. indima ebalulekileyo ngokuphathelele kulo mdlalo links. Phezu kwabo kuya kuxoxwa.

Iintlobo kunye nokubekwa amajelo onxibelelwano

Ngaphambi kokuba uthethe iintlobo, iyavakala ukuchonga undoqo "amajelo onxibelelwano" ingqiqo. Kubhekiswa kwindlela eyenziwa eliphakathi apho andise umqondiso, kwaye yamacebo yobugcisa kunye nezixhobo ezibonelela nokuxhasa andise isiginali ye qho ethile ngesantya ethile.

Ngokumalunga ulwahlulohlulo okanye typology, ke ngoku ke imijelo yonxibelelwano nabanako ukwahlulelana ngolu hlobo lulandelayo:

• Xa Uhlobo medium conductive (cable okanye sokuquqa kwerediyo).
• Xa uluhlu kwamaza (HF, VHF, UHF, microwave band, ezinga- band, infrared).
• Ngokutsho uhlobo uphawu (analog okanye idijithali).

Abaninzi baye ukhe weva amagama afana amajelo onxibelelwano yedijithali okanye iindlela ezamehlo. Ziziphi iimpawu zazo lokwahlula okanye iinzuzo?

Amajelo Digital nokudlulisela ulwazi ngohlobo iqokelelwe kwikhowudi yokubini, nto leyo iqulathe kuphela 0 no 1. oku, kwaba lula ukufikelela ilahleko lincinane okanye nobuqhophololo data, ngokuchaseneyo indlela analog. Ngokomzekelo, xa ethetha kwi ifowuni usetyenziswa rhoqo analog uphawu isimiso ukusebenza yayo eqhubekayo ukutshintshwa oscillations zombane. Kungenxa yokuba inkqubo analog kolwazi unaniso kalula wokuphazamiseka yaye kakhulu sinokuwagqwetha ulwazi okanye ukuphelelwa data.

Amakhonkco optic yahlukile kwezinye izinto ngokwayo, intambo lwenziwe kuyo. okuzenzela Optical ezisetyenziswa wokwenziwa kwawo, likuvumela ukuba ukunika ekwiqondo eliphezulu, okanye ukuncitshiswa uphawu ubugqwetha Ubuncinane nokuba imigama emide, omzimba kuphazamiseko. Ukongeza, i-nefayibha iindleko zemveliso incinane kakhulu ngokukhanya kwayo ineenkalo ngokubanzi. Ngokutsho kweminye imithombo, ubunzima kweentambo zingenakukwazi kuba amaxesha 10 ubunzima ababhexeshi ezamehlo esinobukhulu obufanayo. Amakhonkco optic zombini digital njengolwazi ayidlulisele kule fomu.

Asikwazi athi malunga kwijelo engasebenzi ngeengcingo. Abanye babo sisebenzisa ngaphandle kwanokucinga ngako. Umzekelo oku kube infrared (laser) channel. Livumela ukuba zilawule TV okanye esinye isixhobo kunye kude, esinika umqadi kwe ukukhanya. Amalinki wireless ziquka:

• Infrared okanye laser.
• feeds microwave (asetyenziselwa satellite okanye LD).
• network mahala (amathuba okudluliselwa umqondiso bands ezininzi).