Analog Multiplexer - yog dab tsi?

Txawm niaj hnub no, siab technology, kev kawm ntawv thiab kev txawj ntse, tsis yog txhua tus paub li cas ib tug multiplexer. Los ntawm txoj kev, txoj kev paub no tsis yog hais tias heev npaum li cas yuav tsum tau, vim hais tias no ntaus ntawv yog siv nyob rau hauv ib tug nqaim ntau, tab sis to taub qhov no lub sij hawm tsis ua mob rau (txawm yog tias cia li kom cov zuag qhia tag nrho kev loj hlob).

Yog li, lub multiplexer hu ua ib tug tshwj xeeb ntaus ntawv nruab nrog ntau-tswv yim - lub teeb liab thiab tswj. Tso zis los ntawm no ntaus ntawv no tsuas yog ib. Qhov tseem ceeb yog qhov tseeb hais tias lub teeb liab yuav kis tau mus rau cov qhov tso zis ntawm ib yam ntawm cov inputs, uas yog siv los xaiv cov ua ke ntawm pulses.

Nyob rau hauv tag nrho muaj yog ob hom kev ntaus ntawv - raug rho tawm analog thiab cov multiplexer. Lub hauv paus ntsiab lus ntawm cov lag luam ntawm cov hom yog sib txawv kiag li.

Yog li, nyob rau hauv ib cov ntaus ntawv nrog rau cov xaiv nkag tau theej rau cov qhov tso zis logic theem. Qhov no hom yog heev yooj yim mus siv, tab sis tsis heev zoo meej.

Tab sis analog multiplexer yog ib tug ntau sophisticated ntaus ntawv. Nws inlet thiab qhov hluav taws xob muaj kev cob cog los ntawm txoj kev hluav taws xob, nrog ib tug voltage, tiam sis tsuas yog weakly.

Peb tsis tau hais tias lub analog multiplexer, kuj raug xa mus rau raws li ib tug mus, combines ob pab kiag li lawm ib zaug: ntaus ntawv no muaj peev xwm ua tau tsis tsuas rau nws tus kheej muaj nuj nqi, tiam sis tag nrho cov kev ua ub xam qhovkev nyob rau hauv demultiplexers. Qhov no ua rau nws ntau npaum li cas yooj yim rau siv.

Raws li koj tau qhia los ntawm lub npe, lub xeem ntaus ntawv yog qhov ncaj opposite mus rau tus thawj - nws muaj peev xwm mus rau kis ib lub teeb liab los ntawm lub qhov zis ntawm ib qho ntawm cov inputs. Qhov no yog tau ua tsaug rau lub fact tias cov analog multiplexer txuas lawv nrog hluav taws xob.

Tab sis ua hauj lwm nrog no ntaus ntawv yog tsis tau tsis tau cov kev pab los ntawm koom haum pab machinery. Ua ke nrog nws tus feem ntau siv tswj Circuit Court nrog qhov chaw nyob thiab tso cai rau nkag mus rau.

Thaum hais txog nrog lub fact tias xws li ib tug analog multiplexer thiab nws yog dab tsi, koj yuav tau tham txog lub tseem ceeb tshaj plaws - ntawm nws destiny. Siv no ntaus ntawv mus rau hloov binary code - thaum uas tig mus rau serial thiab vice versa. Cias muab, nws keyboards tus ntsais teeb.

Qhov no ntaus ntawv ua hauj lwm tsuas: nws txiav txim uas cov inputs yuav tsum tau kev cob cog rua rau lub tso zis los ntawm tus thawj thiab thib ob binary xov tooj - lawv yuav tsum phim. Ib tug daim duab nrog rau qhov chaw lis dej num uas yuav pab ib tug neeg kom khiav ntawm lub pab kiag li lawm.

Nws yog yooj yim txaus, muab hais tias tej analog multiplexer muaj tib los inputs.

Piv txwv li, yog tias qhov chaw nyob tswv yim yog code "00", tso zis teeb liab yuav sib npaug zos rau ntawm lub tswv yim, xws zero, lub code "01" qhia cov thawj cov tswv yim teeb liab, thiab "10" - nrog tus thib ob. Tus nyeem ntawv yuav mus ntxiv.

Peb yuav tsuas muab rau koj ib qho piv txwv, sib tham txog qhov yuav tsum tau siv no ntaus ntawv nyob rau hauv lub neej.

Wb hais qhov kev kawm muaj ib co plaub khoom uas kis Pib ntsais koj teeb, thiab cov uas twb muaj lawm kws yuav ua tau "nyeem" tsuas yog ib qho ntawm lawv. Nyob rau hauv cov ntaub ntawv no, nws raug nqi kev multiplexer, uas xaiv lub xwb tsim nyog ib tug.