pcm ndi pcb ndi chiyani

Uinjiniya wamagetsi ndi gawo lomwe lawona kupita patsogolo kwakukulu m'zaka zaposachedwa pomwe ukadaulo ukupitilira kukula mwachangu modabwitsa.Ndi kukwera kwa zida zamagetsi monga mafoni a m'manja, ma laputopu, ndi ukadaulo wovala, kufunikira kwa ma board osindikizidwa (PCBs) sikungatsimikizidwe mopitilira muyeso.Komabe, nthawi zambiri pamakhala chisokonezo pakati pa PCB ndi PCM, zomwe zimapangitsa kuti anthu ambiri azizigwiritsa ntchito mosinthana.Ndiye, pali kusiyana kotani pakati pa mawu awiriwa komanso ndi gawo lanji lomwe amagwira paukadaulo wamagetsi?

Kodi ma PCM ndi chiyani?

PCM imayimira Pulse Code Modulation, njira yomwe imagwiritsidwa ntchito kuyimira ndi kusindikiza ma siginecha a analogi.Njira imeneyi imagwiritsidwa ntchito kwambiri pojambula nyimbo komanso kusewera.Njira ya PCM imaphatikizapo kutembenuza chizindikiro cha analogi, monga phokoso la phokoso, kukhala mndandanda wa 1s ndi 0s zomwe zingathe kuseweredwanso ndi phokoso lofanana ndi chizindikiro choyambirira cha analogi.Zitsanzo za kutembenuka kwa PCM nthawi zambiri zimakhala pakati pa 8 kHz ndi 192 kHz, ndipo kuya pang'ono pa chitsanzo chilichonse kumakhala pakati pa 16 ndi 32 bits.

Kodi Printed Circuit Board ndi chiyani?

Gulu losindikizidwa lozungulira (PCB) ndi bolodi lomwe limagwiritsa ntchito mayendedwe owongolera, mapepala, ndi zinthu zina zomwe zimakhazikika kuchokera pamapepala amkuwa opangidwa ndi lamkuwa kupita ku gawo lapansi lopanda ma conductive kuti lithandizire pamakina ndikulumikiza zida zamagetsi zamagetsi.Ma board awa ndi zigawo zofunika kwambiri pamagetsi ambiri, zomwe zimapereka nsanja yokhazikika ya ma analogi ndi digito.Ma PCB amatha kukhala mbali imodzi, mbali ziwiri kapena zosanjikiza zambiri, kutengera zovuta ndi magwiridwe antchito amagetsi.

Kusiyana pakati pa PCM ndi PCB

PCM ndi PCB ndi matekinoloje osiyana omwe amagwira ntchito m'magawo osiyanasiyana aukadaulo wamagetsi.PCM ndi njira yomwe imagwiritsidwa ntchito polemba ndikuzindikira ma siginecha a analogi, pomwe PCB ndi gawo lomwe limamanga ndikulumikiza zida zamagetsi.Ma PCM ndi ofunikira paukadaulo wojambulira, pomwe ma PCB ndi ofunikira pamakina ambiri apakompyuta.

Kusiyanitsa kwakukulu pakati pa ma PCM ndi ma PCB ndi gawo lomwe amasewera pamagetsi.Ma PCM amagwiritsidwa ntchito kujambula molondola, kusunga ndi kusewera zizindikiro zomveka, pamene ma PCB amagwiritsidwa ntchito pothandizira zipangizo zamagetsi ndi mabwalo, kupereka kukhazikika kwa makina ndi kugwirizanitsa magetsi kwa machitidwe ambiri amagetsi.Komanso, ma PCB amatha kukhala osanjikiza komanso ovuta, pomwe PCM nthawi zambiri imakhala ukadaulo wosavuta.

Kusiyana kwina kwakukulu pakati pa ma PCM ndi ma PCB ndi kapangidwe kawo ndi kapangidwe kawo.PCM ili ndi mndandanda wa 1s ndi 0s woimira chizindikiro cha analogi, pamene PCB ndi msonkhano wakuthupi wopangidwa ndi mapepala amkuwa, ma substrates osayendetsa, ndi zigawo zina zosindikizidwa.Imodzi ndi digito ndipo ina ndi yakuthupi, kuwonetsa mawonekedwe a PCM ndi mawonekedwe a PCB.

Mwachidule, PCM ndi PCB ndi matekinoloje awiri osiyana kwambiri pankhani yaukadaulo wamagetsi.Ma PCM amatenga gawo lofunikira pakujambulitsa mawu ndikusintha ma siginecha, pomwe ma PCB ndi msana wamagetsi ambiri.Ngakhale kuti matekinoloje awiriwa amagawana zofananira m'njira yawo yopangira zidziwitso ndikugwiritsa ntchito ma sign a digito, amagwiritsidwa ntchito mosiyana muukadaulo wamagetsi.

Pomaliza, tengani kamphindi kuti mumvetsetse udindo wofunikira womwe ma PCB amachita pamakina apakompyuta.Popanda gawo lofunikirali, zida zamagetsi monga mafoni a m'manja, ma laputopu kapena zida zapakhomo sizingagwire ntchito monga momwe zikuchitira masiku ano.Chifukwa chake onetsetsani kuti mwapereka ma PCB anu chidwi ndikuwonetsetsa kuti ali pantchitoyo!