Yintoni umqondiso we-analog

Ngamnye wethu ubhekene nezixhobo zobugcisa kwimihla ngemihla - le ifowuni ephathekayo, ikhompyutheni yomsebenzi nokuzilibazisa, isethi yeTV, isithwaphulo se-odiyo, njl njl. Nangona kunjalo, ixesha elide liye ladlula kwaye igama elithi "digital" ngenxa yephulo lokukhangisa elinengqiqo liye labaninzi abantu abadibene namagama athi "alungileyo, aphezulu, athembekileyo." Kuyafaneleka ukuvuma ukuba kukho inani elithile le nyaniso kule nto. Isalathisi se-analog sisetyenziselwe ukudlulisa ulwazi ngaphambili kwesojithali. Oku kungenxa yokucwangciswa kwayo kulula, ukungabikho kwezibonelelo kunye nezinye izizathu.

Ukuze uqonde ukuba yintoni umqondiso we-analog, kubalulekile ukukhumbula izinto ezisisiseko zobunjineli bamandla, ngokukodwa, uhlobo lombane wamandla. Emva koko, uphawu olubhekiselwe kumbuzo, eqinisweni, ludibene ngqo nalo - lube ngumbane okhoyo okanye oombane. Ngokuqinisekileyo, wonke umntu weva malunga ne "sinusoid" edumile.

Ngokwemva udwebe umgca ongqambileyo - lo yi-axis of time. Umgca ojikelezayo ogqagqayo unamathele kuwo, kwaye ukuphakama kwamaza angaphantsi nangaphezulu kwe-axis. Emva koko, cinga ukuba sihambisa lo mgca onjenge-wavex ngexesha le-axis. Ngenxa yoko, inani lamagagasi awela nganoma nayiphi na ixesha ixesha lokunciphisa liya kuhla. Kwaye ngoku "fakela" i-sinusoid - amaza aqala ukuya rhoqo. Ngamanye amazwi, ngala ma nyathelo sitshintsha ukuvama. Ukuba siqhubeka nokuzama ukucinga kwaye "shintsha / solule" amaza aphezulu kwaye ahlawule ngokubhekiselele kwi-axis yexesha, sinokuthi sitshintshe ukulinganisela. Le ndlela yenziwa ngayo umqondiso we-analog.

Inomathotholo isebenzisa ezi ndlela ezimbini - i-FM (iFomment Modulation) kunye ne-AM (i-Moderationitude Modulation). Ewe, umzekelo owenziwe ulula ukuqonda. Ukongezelela ekutshintsheni ubukhulu kunye (okanye) ukuphakama kwamanzi, amaza agqithiselwa kwezinye, ngakumbi, utshintsho. Iinkcukacha ezingakumbi malunga nale nto zifumaneka kwiiwebhusayithi ezizodwa okanye kwiincwadi.

Ngokusekelwe kulo mbandela, kunokwenzeka ukuba yenze inkcazo: isalathisi se-analog yindlela eqhubekayo yokuhambisa ulwazi. Enye yezinto ezingenakunqandwa ngayo iyakwazi ukuba "ukungcola kwengxolo". Ngoku kukho iifowuni zomntu ngamnye. Kwaye wonke umntu, ubuncinane kanye, washiya ifowuni kufuphi ne-TV esebenzayo okanye izithethi zekhompyutha. Okungaqhelekanga ukudibanisa okukhethiweyo ezivakalayo kwisithethi ngaphambi kokufumana i-SMS okanye ukufumana ifowuni iyaziwa kuwo wonke umntu. Ziyimpembelelo yombane, idibene kwisandi esakhiwe yiTV okanye ikhomputer. Kucacile ukuba, le nto yinto engathandekiyo.

Isikhokelo senziwa kubaqhubi bezithethi. Enyanisweni, umtsalane ogqithisiweyo (umqondiso wesiganeko) uvezwe kwimpembelelo yangaphandle, ukuphazamiseka kuya kufakwa kuwo. Enyanisweni, kulo mzekelo, umntu ukhetha ngokukhawuleza idatha echanekileyo (isandi) kwingxolo, kodwa ukuba isignali ifumana izijikelezo zengqondo, ngoko kuvela ubunzima beqela. Ngokomzekelo, akunakwenzeka ukuqikelela ngokuqinisekileyo ukuba yiphi idatha efanelekileyo, kwaye apho ingxolo.

Ngoko ke, indlela yokudlulisela i-analog yatshintshwa yinto yedijithali. Izibonakaliso ze- analog nezedijithali zihluke ngokupheleleyo. Iyesibini yenziwe ngale ndlela ilandelayo: i-wave ye-sine igqityaniswe ngokuqhelekileyo ibe yimiqathango yamanqaku, isikhundla salo nganye esikhokhelwe ngokulandelelana okuthile kweentlobo kunye nezikhefu (akukho zikhoyo). Ngokuqhelekileyo i-pulse ihambelana neyunithi enengqiqo, kunye nexesha elide ukuya kwi-zero (nangona kukho indlela eyahlukileyo). Isixhobo esifumanayo sichaza iipulya ezifunyenweyo kwaye sibuyisela isono sesimo sangaphambili. Kucacile ukuba, umqondiso onjalo awuncitshiswa kancinci, kuba iyunithi yokuqhawula ngokucacileyo iyahlula ngokucacileyo ukutshiza. Nangona kunjalo, ukuba izinga lezandi ligqithiseleyo, isignali yedijithali ilahlekile nje.