Yintoni bandwidth

igama elithi "bandwidth" ivame network electronic zonxibelelwano ezisetyenzisiweyo. Le yenye iimpawu eziphambili iinkqubo ezinjalo. Ngophanya nje lweliso, kusenokubonakala ngathi umntu omsebenzi wakhe akukho edibene imigca unxibelelwano, akukho mfuneko yokuba ukuqonda oko bandwidth ijelo. Enyanisweni, bonke kancinane engalunganga. Abaninzi ikhaya computer yakho udityanisiwe kwi Internet. Kwaye wonke umntu uyazi ukuba maxa wambi ukusebenza nge "World Wide Web" ngaphandle kwesizathu kuyehla. Esinye isizathu soku kukuba xa kanye Okwangoku band channel umboneleli bandwidth igcwele. Isiphumo - nokuthoba ecacileyo kunye ukungasebenzi kunokwenzeka. Phambi zichaze ingqiqo ka "bandwidth", sebenzisa i umzekelo, kuvumela nabani na ukuze uqonde ukuba yintoni na busengozini.

Khawucinge nje ngendlela umendo kwidolophu encinane kwaye i sixeko ezinabantu abaninzi. Kwimeko yokuqala, eyona nto ilungiselelwe enye okanye ezimbini imijelo izithuthi, ngokulandelelana, ububanzi encinane. Kodwa emizini enkulu, kude abane-lane akumangalisi. Ngeli xesha inani iimoto, ukuqhuba kumgama enye kwiindlela ezimbini, yahlukile kakhulu. Kuxhomekeke iimpawu ezimbini - isantya kunye nenani bands. Kulo mzekelo, indlela - into ijelo lonxibelelwano, yaye oomatshini abo ulwazi ziintanda. Kwelinye icala, band nganye - ilinki unxibelelwano.

Ngamanye amazwi, le bandwidth ngqo ibonisa ubungakanani kwedatha kusasazwa phezu ijelo lonxibelelwano nganye kwexesha unit. Ukuba uphakamile lo parameter, ukhululeke ngakumbi ukusebenza inamehlo enjalo.

Ukuba izinga ukosuleleka zonke kubonakala (oko konyusa kunye nokuncipha yomqondiso transmission ukulibaziseka), ibinzana elithi "bandwidth" is a bit nzima ngakumbi. Njengoko kwakusazeka ukuba uphawu nga ukugqithisa ulwazi ngendlela ethile, yena uguqulwa. Isicelo elektroniki, kusenokuba kwamaza, awo okanye kwezwi mixed. Noko ke, enye yeempawu ugqithiso kukuba omnye umqhubi enye, pulses eziliqela ukuba idluliselwe ngaxeshanye ezitsho ezahlukileyo (ngaphakathi bandwidth totali ubugqwetha ngaphakathi kwemida ezamkelekileyo). Olu phawu ikuvumela ukuba ukwandisa imveliso yeli ikhonkco ngaphandle ngokutshintsha ngokukhawuleza. Umzekelo ocacileyo we kwavumela ezitsho - incoko ngaxeshanye abantu abaliqela kunye besandi eyahlukileyo. Nangona wonke uthi, kodwa ngamazwi onke kakhulu distinguishable.

Kutheni isebenza ityathanga maxa wambi ukunciphisa waphawula? Zonke sichazwe kakhulu nje:

- ayanda kokulinganisa, isantya ngaphantsi. Nayiphi sicatshulwa uphawu uphazamiseko (isoftware okanye ngokwasemzimbeni) thoba isantya;

- kaninzi umlambo datha ifaka amasuntswana ezongezelelweyo yokusebenza imisebenzi phindo - babizwa ngokuba "komsebenzi". Oku kuyimfuneko ukuqinisekisa ukusebenza ngokufanelekileyo kweemeko phambi ingxolo kumgca;

- ufikelele mda ebonakalayo kwezi nokuqhuba medium xa bonke kuvumelekile Ibanga rhoqo sele zisetyenziswa kunye neenxalenye ezintsha ze data ukuba zibekwe emgceni ukuthumela.

Ukusombulula ezi ngxaki abanikezeli basebenzisa inani leendlela ezahlukeneyo. Oku kunokuba lweeHedfowuni, ukwanda "ububanzi" kodwa anika a ukulibala; ukwanda channel ngenxa yokuba i "extra" eqhuba eendaba njalo njalo.

Igama elithi "sebhawudi" wambi lisetyenziswa indlela yedijithali. Enyanisweni, oko kuthetha ukuba inani ziikhowudi idatha adluliselwe nganye kwexesha unit. Ngamaxesha lwelayini zonxibelelwano kade (yokudayala-up) 1 bps ingqamana 1 bit 1 ngomzuzwana. Kwixesha elizayo, kunye izinga lokukhula, "sebhawudi" ayeka yonke. Oku kuthetha 1, 2, 3 okanye ngaphezulu ibhithi ngomzuzwana, efuna isalathiso eyahlukileyo, ngoko ke sebenzisa inkqubo eyahlukileyo, luqondakale wonke.