Hauv cov khoom siv hluav taws xob, kev sib koom ua ke ntawm cov thev naus laus zis thiab kev tsim qauv zoo yog qhov tseem ceeb.Ob qhov tseem ceeb hauv daim teb no yog pulse code modulation (PCM) thiab luam tawm Circuit Board (PCB).PCM thiab PCB tau siv dav hauv ntau yam khoom siv hluav taws xob, thiab txhua tus muaj nws tus kheej zoo thiab cov yam ntxwv.Hauv blog no, peb yuav nthuav tawm qhov sib txawv thiab muaj peev xwm ntawm PCMs thiab PCBs los txiav txim seb qhov kev xaiv twg zoo dua rau koj cov kev xav tau.
PCM (Pulse Code Modulation):
Pulse Code Modulation yog ib txoj hauv kev digital los sawv cev rau cov teeb liab analog.Nws hloov cov cim analog rau hauv daim ntawv digital thiab feem ntau yog siv rau hauv cov ntawv thov suab xws li kev kaw suab thiab suab paj nruag.PCM ib ntus captures lub amplitude ntawm txhua tus qauv ntawm ib tug analog teeb liab thiab sawv cev rau nws digitally.Cov txheej txheem kev ua piv txwv no raug muab rov ua dua qhov qub analog teeb liab.PCM muab lub suab zoo meej thiab paub txog nws qhov kev ntseeg siab, ua rau nws zoo tagnrho rau kev tsim cov suab thiab cov khoom siv uas xav tau cov suab tsis zoo.
PCB (Printed Circuit Board):
Printed circuit boards yog lub hauv paus ntawm lub cev ntawm cov khoom siv hluav taws xob, muab lub platform rau kev sib txuas ntawm ntau yam khoom.Lub PCB muaj cov kab hluav taws xob txuas mus rau hauv cov khoom siv hluav taws xob tsis muaj hluav taws xob los muab kev sib txuas hluav taws xob thiab kev txhawb nqa tshuab rau cov khoom.PCBs pab txhawb kev teeb tsa thiab kev sib txuas ntawm ntau yam khoom siv hluav taws xob xws li resistors, capacitors thiab microchips.Kev hloov pauv ntawm PCB tsim tso cai rau kev teeb tsa hauv Circuit Court, ua rau nws siv dav hauv ntau yam lag luam xws li kev sib txuas lus, aerospace, thiab cov khoom siv hluav taws xob.
Distinguishing yam:
1. Muaj nuj nqi:
PCM feem ntau tsom rau kev ua cov teeb liab digital los muab cov suab nrov zoo.Ntawm qhov tod tes, PCBs pab txhawb kev ua haujlwm tag nrho ntawm cov khoom siv hluav taws xob, ua kom yooj yim rau kev sib txuas ntawm ntau yam khoom thiab muab kev ruaj ntseg rau lub cev.Thaum PCMs yog ib feem tseem ceeb ntawm lub tshuab suab, PCBs tau siv nyob rau hauv yuav luag txhua lub tshuab hluav taws xob, los ntawm smartphones mus rau cov khoom siv kho mob.
2. Tsim complexity:
PCM feem ntau suav nrog software algorithms thiab cov txheej txheem ua haujlwm siab heev.Thaum nws xav tau kev txawj ntse hauv suab engineering thiab programming kev txawj ntse los txhim kho nws cov kev ua tau zoo, nws yog qhov yooj yim ntawm kev tsim lub cev.Hauv qhov sib piv, PCB tsim yuav tsum tau ua tib zoo npaj cov txheej txheem, qhov chaw tso khoom, thiab kev txheeb xyuas hluav taws xob sib txuas.Nws xav tau kev paub txog hluav taws xob engineering thiab kev tsim qauv zoo kom ua tiav qhov kev xav tau.
3. Versatility:
PCM yog tsim tshwj xeeb rau cov ntawv thov suab kom paub meej lub suab raug thiab txo qis kev cuam tshuam.Nws lub hom phiaj tseem ceeb yog khaws cia kev ncaj ncees ntawm lub suab teeb liab hauv cov npe digital.Ntawm qhov tod tes, PCBs tsis txwv rau ib qho kev thov tshwj xeeb lossis kev lag luam.Lawv versatility tso cai rau lawv los kho kom haum raws li qhov yuav tsum tau ntawm cov khoom siv hluav taws xob, xws li lub suab paj nruag portable lossis satellite kev sib txuas lus.
nyob rau hauv xaus:
Ob lub PCMs thiab PCBs yog ib qho tseem ceeb pab txhawb rau kev lag luam hluav taws xob, txhua qhov ua haujlwm tshwj xeeb.PCM yog thawj qhov kev xaiv ntawm suab engineers thiab audiophiles rau lub suab tsis zoo.PCBs yog lub hauv paus raws li cov txheej txheem hluav taws xob ua kom yooj yim, ua kom muaj kev sib txuas zoo thiab ruaj khov.Txawm hais tias PCMs thiab PCBs sib txawv hauv kev ua haujlwm thiab tsim qauv, lawv feem ntau siv ua ke hauv cov khoom siv hluav taws xob, sib txuas lawv lub zog tshwj xeeb.
Thaum kawg, nws los txog rau cov kev cai tshwj xeeb ntawm koj qhov project lossis khoom siv.Kev nkag siab txog qhov sib txawv thiab cov yam ntxwv ntawm PCMs thiab PCBs yuav pab koj txiav txim siab raws li koj xav tau.Yog li txawm hais tias koj tab tom tsim cov kab ke hi-fi lossis tsim cov khoom siv hluav taws xob ntau, PCMs thiab PCBs yog cov cuab yeej tseem ceeb rau kev nce qib thev naus laus zis.
Post lub sij hawm: Jul-03-2023