yini i-pcm ne-pcb

Ubunjiniyela be-elekthronikhi buwumkhakha obone intuthuko enkulu eminyakeni yamuva nje njengoba ubuchwepheshe buqhubeka buthuthuka ngesivinini esimangalisayo.Ngokukhuphuka kwemishini kagesi efana nama-smartphones, amakhompyutha aphathekayo, nobuchwepheshe obugqokekayo, ukubaluleka kwamabhodi esekethe aphrintiwe (ama-PCB) angeke kugcizelelwe ngokweqile.Kodwa-ke, kuvame ukudideka phakathi kwe-PCB ne-PCM, okwenza abantu abaningi bazisebenzise ngokushintshana.Ngakho-ke, yini umehluko phakathi kwala magama amabili futhi iyiphi indima ayidlalayo kwezobunjiniyela bakagesi?

Ayini ama-PCM?

I-PCM imele i-Pulse Code Modulation, indlela esetshenziselwa ukumela nokuhlanganisa amasignali e-analog ngedijithali.Le ndlela ijwayele ukusetshenziselwa ukuqoshwa komsindo nokudlalwa.Inqubo ye-PCM ihilela ukuguqula isignali ye-analog, njengegagasi lomsindo, libe uchungechunge lwama-1s no-0s olungase ludlalwe futhi ngekhwalithi yomsindo ecishe ifane neyesiginali ye-analog yangempela.Izinga lesampula lokuguqulwa kwe-PCM ngokuvamile liphakathi kuka-8 kHz no-192 kHz, futhi ukujula kwebhithi ngayinye kuphakathi kuka-16 no-32 bits.

Liyini Ibhodi Lesekethe Eliphrintiwe?

Ibhodi lesekethe eliphrintiwe (PCB) ibhodi elisebenzisa amathrekhi e-conductive, amaphedi, nezinye izici eziqoshwe emakhasini ethusi alamiwe phezu kwe-non-conductive substrate ukuze isekele ngomshini futhi ixhume izingxenye zikagesi ngogesi.Lawa mabhodi ayizingxenye ezibalulekile ezinhlelweni eziningi zikagesi, ahlinzeka ngenkundla ezinzile yamasekhethi e-analog nedijithali.Ama-PCB angaba nohlangothi olulodwa, anezinhlangothi ezimbili noma anezendlalelo eziningi, kuye ngobunkimbinkimbi nokusebenza kohlelo lwe-elekthronikhi.

Umehluko phakathi kwe-PCM ne-PCB

I-PCM ne-PCB ubuchwepheshe obuhlukene obusebenza emikhakheni ehlukene yobunjiniyela bukagesi.I-PCM iwuhlelo olusetshenziswa ukuhlanganisa nokukhipha amasiginali e-analog, kuyilapho i-PCB iyingxenye ephathekayo ehlala futhi exhumanisa izingxenye ze-elekthronikhi.Ama-PCM abalulekile ekurekhodeni ubuchwepheshe, kuyilapho ama-PCB abalulekile ezinhlelweni eziningi zikagesi.

Omunye umehluko omkhulu phakathi kwama-PCM nama-PCB indima ayidlalayo ezinhlelweni zikagesi.Ama-PCM asetshenziselwa ukuthwebula ngokunembile, ukugcina kanye nokudlala amasignali omsindo, kuyilapho ama-PCB asetshenziselwa ukusekela izingxenye ze-elekthronikhi namasekhethi, anikeze ukuzinza kwemishini kanye nokuxhumana kukagesi kumasistimu amaningi kagesi.Futhi, ama-PCB angaba anezendlalelo eziningi futhi abe yinkimbinkimbi, kuyilapho i-PCM ngokuvamile iwubuchwepheshe obulula kakhulu.

Omunye umehluko obalulekile phakathi kwama-PCM nama-PCB ukwakheka kwawo kanye nokwakheka kwawo.I-PCM iqukethe uchungechunge lwama-1s no-0 amele isignali ye-analog, kuyilapho i-PCB iwumhlangano ongokoqobo owenziwe ngamashidi ethusi, ama-non-conductive substrates, nezinye izingxenye zesekethe eziphrintiwe.Enye idijithali kanti enye ingokomzimba, ekhombisa ubunjalo bokusebenza kwe-PCM nesixhumi esibonakalayo se-PCB.

Kafushane, i-PCM ne-PCB ubuchwepheshe obubili obuhluke ngokuphelele emkhakheni wobunjiniyela be-elekthronikhi.Ama-PCM adlala indima ebalulekile ekurekhodweni komsindo nasekucutshungulweni kwesignali, kuyilapho ama-PCB ewumgogodla wezinhlelo eziningi zikagesi.Nakuba lobu buchwepheshe bubili buhlanganyela ukufana okuthile endleleni yabo yokucubungula ulwazi nokusetshenziswa kwamasignali edijithali, busetshenziswa ngendlela ehlukile kubunjiniyela bukagesi.

Sengiphetha, thatha isikhashana ukuqonda indima ebalulekile edlalwa ama-PCB ezinhlelweni zikagesi.Ngaphandle kwalesi sici esiyisisekelo, izinto zikagesi ezifana nama-smartphone, amakhompyutha aphathekayo noma izinto zikagesi zasekhaya ngeke zikwazi ukusebenza njengoba zenza namuhla.Ngakho-ke qiniseka ukuthi unikeza ama-PCB akho ukunakwa okubafanele futhi uqiniseke ukuthi aphezu komsebenzi!