Digital Multiplexer: incazelo, inhloso, izinhlobo

A Multiplexer oludijithali inhlanganisela idivayisi okunengqondo okuyinto senzelwe ukudluliswa elawulwa ka-data esuka emithonjeni eziningana idatha isiteshi okukhiphayo. Eqinisweni, kule divayisi kuyinto digital ukushintsha positional amaningi. It kuvela ukuthi inkinobho kuyinto amasignali digital Multiplexer okokufaka ibe okukhipha umugqa owodwa.

Le divayisi sineqembu ezintathu imibono:

• ikheli, ikhodi kanambambili ebheka ukuthi yiluphi ulwazi okokufaka ixhunywe okukhipha;
• Imininingwane;
• evumela (gating).

I ekhiqizwa izifunda okuhlangene digital Multiplexer 16 has esiphezulu Imininingwane okokufaka. Uma lo mshini esivezwa ifuna imali ethé xaxa emikhulu, kuleso simo isakhiwo yakhiwe okuthiwa Multiplexer isihlahla chips eziningana.

Multiplexer Digital ingasetshenziswa synthesis cishe yimuphi iyunithi okunengqondo, okuyinto kakhulu kunciphisa inani lezifunda zezinye asetshenziswe izakhi logic.

multiplexers Imithetho zamagama amadivayisi based:

• Karnaugh mephu yakhelwe umsebenzi okukhiphayo (ngokuvumelana nezindinganiso imisebenzi variable);
• kuyakhethwa ngokulandelana ukusetshenziswa wesifunda Multiplexer;
• ukugqiba-matrix esakhiwe, okumele luhambisane oda esetshenziswa Multiplexer;
• matrix okuholela kumele eziphoqelelwe kumephu Karnaugh;
• kwalokho kwenziwe ukunciphisa umsebenzi ngokuhlukile indawo afanayo ngamunye;
• ngesisekelo ukunciphisa imiphumela kudingekile ukwakha wesifunda.

Imfundiso manje abakuyo. Cabanga lapho isicelo amadivaysi ezinjalo.

multiplexers Nezimo zenzelwe ukwakha ukusakaza digital (primary) ngesilinganiso 2048 kbit / s we amasignali analog (inkulumo), kanye idatha kokusetshenziswa kubonwa digital cross-ukuxhuma iziteshi electronic 64 kbit / s ukusakaza digital ukudluliswa ngenethiwekhi IP /-Ethernet futhi ukuguqulwa umugqa mkhosi nezihlanganiso ngokomzimba.

Nedivaysi enjalo kungaba kabusha 60 (kwezinye tinkhulumo, lesi sibalo singaba ngaphezu) analog Ukunqanyulwa kwe-1 noma 2 E1 128 noma zokubhalisa amasethi lihlukane kane E1. Ngokuvamile, Ukunqanyulwa kwe-analog PM aphume ashone imigqa kokuba band mkhosi noma uhlelo alamu luyasetshenziswa kusiteshi esihlukile. Lezi ziteshi izwi kungenziwa onomfutho 32 noma 16 kbit / s isiteshi ngamunye, lisebenzisa esephepheni ADPCM.

multiplexers Nezimo bayakuvumela ukuba usebenzise uxhumano wabalingisi abaningi, okusho ukunikeza amasignali kusuka omunye iziteshi yedijithali noma analog ku nabanye abambalwa. Ngokuvamile esetshenziselwa lokuveza izinhlelo zomsakazo kanyekanye ezindaweni eziningana ezahlukene.

multiplexers Optical - amadivayisi yakhelwe ukusebenza ngedatha ukusakaza usebenzisa ukukhanya imishayo ukuthi ziyahlukahluka amplitude noma isigaba nehele kanye nombono. Izinzuzo amadivayisi zibala nokuqinisela, ukuphepha lobuchwepheshe, isivikelo nokugenca kolwazi ngocansi.