Cov Multiplexer: hauj lwm, lub hom phiaj, hom

Ib tug digital multiplexer yog ib zajlus kom ua ke ntaus ntawv uas yog npaj rau cov tshuaj kis tau tus mob ntawm cov ntaub ntawv los ntawm ntau cov ntaub ntawv qhov chaw mus rau ib qho tso zis channel. Nyob rau hauv qhov tseeb, ntaus ntawv no yog ib tug ntau yam digital positional keyboards. Nws hloov tawm hais tias tus tes hloov qhov yog ib cov multiplexer tswv yim Pib ntsais koj teeb rau hauv ib zis kab.

Qhov no ntaus ntawv muaj peb pab pawg ntawm cov inputs:

• chaw nyob, binary code uas txiav txim cov ntaub ntawv uas cov tswv yim yog kev cob cog rua rau cov qhov tso zis;
• ntaub ntawv;
• tso cai (gating).

Cov ua kev circuits cov multiplexer 16 muaj lub siab tshaj plaws cov lus qhia inputs. Yog hais tias lub pob chav tsev yuav tsum tau ib tug loj npaum li cas, nyob rau hauv uas cov ntaub ntawv lub qauv yog ua li ntawd-hu ua multiplexer tsob ntoo ntawm ob peb daim.

Cov multiplexer yuav siv tau rau lub synthesis ntawm suab tej zajlus kom chav tsev, uas tshuam thiaj li tus naj npawb ntawm circuits siv nyob rau hauv lub logic hais.

Cov kev cai synthesis pab kiag li lawm raws li multiplexers:

• Karnaugh daim ntawv qhia no los ua rau cov qhov tso zis muaj nuj nqi (raws li qhov tseem ceeb ntawm nce mus nce los functions);
• yog xaiv nyob rau hauv qhov kev txiav txim ntawm kev siv ntawm lub multiplexer Circuit Court;
• masking lub matrix lub tsev, uas yuav tsum sib haum mus rau qhov kev txiav txim uas siv los ntawm lub multiplexer;
• lub resulting matrix yuav tsum tau yuam rau tus Karnaugh daim ntawv qhia;
• tom qab ntawd nqa minimization muaj nuj nqi nyias rau txhua cheeb tsam ntawm lub array;
• rau lub hauv paus ntawm nrhiav tau tsim nyog los tsim lub Circuit Court.

Qhov kev tshawb xav tam sim no mus xyaum. Xav txog qhov twg lub thov xws li.

Saj zawg zog multiplexers yog tsim los tsim cov ntws (thawj) ntawm tus nqi ntawm 2048 kbit / s ntawm lub analog Pib ntsais koj teeb (hais lus), raws li zoo raws li cov ntaub ntawv ntawm lub digital interface ntoo khaub lig-txuas hluav taws xob raws ntawm 64 kbit / s cov kwj kis tau tus mob lawm cov network IP / Ethernet thiab rau hloov dua siab tshiab kab signaling thiab lub cev pob qij txha.

Nrog xws li ib tug ntaus ntawv yuav redirect rau 60 (nyob rau hauv ib co qauv, qhov no daim duab yuav ua tau ntau yam ntxiv) analog Terminations nyob rau hauv 1 los yog 2 E1 128 los yog neeg yuav poob lawm rau hauv plaub E1. Feem ntau, cov analog PM Terminations protrude kab muaj band signaling los yog tswb system yog DVR rau ib daim channel. Cov suab raws yuav compressed mus 32 los sis 16 kbit / s ib channel, nws yuav siv cov ADPCM coding.

Saj zawg zog multiplexers tso cai rau koj siv multicast kev twb kev txuas, piv txwv li muab tus ntsais teeb ntawm ib lub digital los yog analog raws ntawm ib tug ob peb lwm tus neeg. Feem ntau siv rau muab lub xov tooj cua cov kev pab cuam ib txhij nyob rau hauv ob peb lub chaw sib txawv.

Kho qhov muag multiplexers - yog li tsim los ua hauj lwm uas muaj ntaub ntawv ntws siv lub teeb kab teeb uas txawv cov amplitude los yog theem grating thiab wavelength. Qhov zoo ntawm cov xws li muaj xws li resilience, kev ruaj ntseg, kev tiv thaiv tiv thaiv hacking ntawm cov ntaub ntawv kis.