1: Menene LED?
LED shine takaitaccen diode haske mai fitar da haske."LED" a cikin masana'antar nuni yana nufin LED wanda zai iya fitar da haske mai gani
2: Menene pixel?
Mafi ƙarancin haske na nunin LED yana da ma'ana ɗaya da "pixel" a allon kwamfuta na yau da kullun;
3: Menene tazarar pixel (dot tazara)?
Nisa daga tsakiyar pixel ɗaya zuwa tsakiyar wani pixel;
4: Menene LED nuni module?
Karamin naúrar ta ƙunshi pixels nuni da yawa, wanda ke da tsarin kansa kuma yana iya samar da allon nunin LED.Yawanci shine “8 × 8”, “5 × 7”, “5 × 8”, da sauransu, ana iya haɗa su cikin kayayyaki ta hanyar takamaiman da’irori da tsarin;
5: Menene DIP?
DIP shine taƙaitaccen Kunshin In-line Biyu, wanda taro ne na cikin layi biyu;
6: Menene SMT?Menene SMD?
SMT shine takaitaccen fasahar Surface Mounted Technology, wanda shine mafi mashahurin fasaha da tsari a cikin masana'antar hada-hadar lantarki a halin yanzu;SMD shine taƙaitaccen na'urar da aka ɗora
7: Menene LED nuni module?
Lissafi na asali da aka ƙayyade ta hanyar kewayawa da tsarin shigarwa, tare da aikin nuni, kuma yana iya gane aikin nuni ta hanyar haɗuwa mai sauƙi
8: Menene nunin LED?
Nuni allo wanda ya ƙunshi jeri na na'urar LED ta hanyar takamaiman yanayin sarrafawa;
9: Menene plug-in module?Menene fa'ida da rashin amfani?
Yana nufin cewa DIP fitilun kunshin ya wuce fitilun fitilun ta cikin allon PCB kuma ya cika tin a cikin ramin fitila ta hanyar walda.Tsarin da aka yi ta wannan tsari shine tsarin toshewa;Abubuwan amfani shine babban kusurwar kallo, babban haske da kuma kyakkyawan zafi mai zafi;Rashin hasara shi ne cewa girman pixel ƙarami ne;
10: Menene saman manna module?Menene fa'ida da rashin amfani?
SMT kuma ana kiranta SMT.Fitilar da ke kunshe da SMT tana waldawa a saman PCB ta hanyar aikin walda.Ƙafar fitila baya buƙatar wucewa ta PCB.Tsarin da wannan tsari ya yi shi ake kira SMT module;Abubuwan amfani sune: babban kusurwar kallo, hoton nuni mai laushi, girman pixel, dace da kallon cikin gida;Rashin hasara shi ne cewa hasken bai isa ba kuma zafin zafi na bututun fitilar kanta bai isa ba;
11: Menene tsarin sitika na sub-surface?Menene fa'ida da rashin amfani?
Alamar ƙasa samfurin samfuri ne tsakanin DIP da SMT.Fuskar marufi na fitilar LED ɗin sa iri ɗaya ne da na SMT, amma fil ɗin sa masu kyau da mara kyau iri ɗaya ne da na DIP.Hakanan ana walda shi ta hanyar PCB yayin samarwa.Amfaninsa shine: babban haske, tasirin nuni mai kyau, da rashin amfaninsa shine: tsari mai rikitarwa, kulawa mai wahala;
12: Menene 3 cikin 1?Menene fa'ida da rashin amfaninta?
Yana nufin marufi LED kwakwalwan kwamfuta na launi daban-daban R, G da B a cikin gel iri ɗaya;Abubuwan da ake amfani da su sune: samar da sauƙi, sakamako mai kyau na nuni, da rashin amfani shine: bambancin launi mai wuya da tsada;
13: Menene 3 da 1?Menene fa'ida da rashin amfaninta?
3 a cikin 1 an fara ƙirƙira kuma kamfaninmu ya yi amfani da shi a cikin masana'antar iri ɗaya.Yana nufin juxtaposition na tsaye na fitilun SMT guda uku da ke da kansu R, G da B bisa ga wani nisa, wanda ba wai kawai yana da duk fa'idodin 3 a cikin 1 ba, amma kuma yana warware duk rashin amfani na 3 a cikin 1;
14: Menene launi na farko na biyu, launi mai launi da cikakkun launi?
LED tare da launuka daban-daban na iya ƙirƙirar allon nuni daban-daban.Launi na farko na farko ya ƙunshi launuka ja, koren ko rawaya-kore, launi na ƙarya ya ƙunshi ja, rawaya-kore da launuka shuɗi, kuma cikakken launi ya ƙunshi ja, kore mai tsabta da shuɗi mai shuɗi;
15: Menene ma'anar tsananin haske (haske)?
Ƙaƙƙarfan haske (luminosity, I) an bayyana shi azaman hasken haske na tushen hasken batu a wata hanya, wato, adadin hasken da jikin mai haske ke fitarwa a cikin lokaci ɗaya, wanda kuma ake kira haske.Ƙungiyar gama gari ita ce candela (cd, candela).An ayyana candela na duniya a matsayin hasken da ke fitowa ta hanyar kona kyandir da aka yi da man whale a gram 120 a kowace awa.Giram ɗaya na sanyi daidai yake da gram 0.0648
16: Menene raka'ar tsananin haske (haske)?
Ƙungiyar gama gari na ƙarfin haske shine candela (cd, candela).Candela na kasa da kasa (lcd) an ayyana shi azaman hasken 1/600000 a cikin shugabanci daidai gwargwado ga blackbody (yankinsa shine 1m2) lokacin da madaidaicin baki yana cikin yanayin daskarewa na platinum (1769 ℃).Abin da ake kira baƙar fata mai kyau yana nufin cewa fitarwar abu daidai yake da 1, kuma makamashin da abin ya shafa zai iya haskakawa gaba ɗaya, ta yadda yanayin zafi ya kasance daidai kuma yana daidaitawa, Alakar musayar tsakanin candela na duniya da kuma tsohuwar. daidaitaccen candela shine 1 candela = 0.981 kyandir
17: Menene madaidaicin haske?Menene sashin juzu'i mai haske?
Luminous flux ( φ) Ma'anar ita ce: makamashin da ke fitowa ta hanyar haske mai ma'ana ko tushen hasken da ba shi da ma'ana a cikin lokacin raka'a, wanda a cikinsa ake kiran mai gani (fitsarin hasken da mutane ke iya ji) mai haske.Naúrar fitowar haske ita ce lumen (wanda aka gajarta a matsayin lm), kuma 1 lumen (lumen ko lm) an ayyana shi azaman hasken hasken da ya wuce ta madaidaicin hasken kyandir na duniya a cikin naúrar ƙaƙƙarfan kusurwar baka.Tunda dukkanin yanki mai siffar zobe shine 4 π R2, hasken haske na lumen guda ɗaya yana daidai da 1/4 π na hasken haske wanda kyandir ɗaya ke fitarwa, ko kuma sararin samaniya yana da 4 π, don haka bisa ga ma'anar lumen, ma'ana. tushen hasken cd zai haskaka 4 π lumens, wato φ (lumen) = 4 π I (hasken kyandir), ana zaton △ Ω karamin kusurwar baka ne, hasken haske △ a cikin △ Ω m kwana φ， △ φ= △ΩI
18: Me ake nufi da kyandir ƙafa ɗaya?
Kyandir ɗin ƙafa ɗaya yana nufin hasken da ke kan jirgin wanda ke da ƙafa ɗaya nesa da tushen hasken (tushen haske ko tushen hasken da ba na aya ba) da kuma madaidaicin haske zuwa haske, wanda aka rage shi a matsayin 1 ftc (1 lm/ft2, lumens). / ft2), wato, hasken lokacin da hasken hasken da aka samu kowace ƙafar murabba'in shine 1 lumen, da 1 ftc = 10.76 lux
19: Menene ma'anar kyandir na mita daya?
Kyandir na mita ɗaya yana nufin hasken da ke cikin jirgin sama da nisan mita ɗaya daga tushen hasken kyandir ɗaya (maɓuɓɓugan haske ko tushen hasken da ba na batu ba) da kuma madaidaicin haske, wanda ake kira lux (wanda kuma aka rubuta da lx), wato. , Hasken haske lokacin da hasken haske da aka samu a kowace murabba'in mita shine 1 lumen (lumen / m2)
Menene ma'anar 20:1 lux?
Haskakawa lokacin da hasken hasken da aka samu a kowace murabba'in mita shine 1 lumen
21: Menene ma'anar haske?
Haske (E) ana bayyana shi azaman fiɗa mai haske da aka karɓa ta naúrar da ke haskaka yankin abin da aka haskake, ko hasken da abin haskakawa ya karɓa a kowane yanki a cikin lokaci naúrar, wanda aka bayyana a cikin kyandir na mita ko kyandir ɗin ƙafa (ftc)
22: Menene alakar haske, haske da nisa?
Dangantaka tsakanin haske, haske da nisa shine: E (haske) = I (luminosity)/r2 (square of distance)
23: Wadanne abubuwa ne ke da alaka da hasken wannan batu?
Hasken abin yana da alaƙa da ƙarfin hasken hasken da tazarar da ke tsakanin abu da tushen hasken, amma ba ga launi, kayan saman abu da sararin saman abin ba.
24: Menene ma'anar ingantaccen haske (lumen/watt, lm/w)?
Matsakaicin jimillar kwararar haske da tushen hasken ke fitarwa zuwa wutar lantarki da tushen hasken ke cinyewa ana kiransa ingantaccen hasken hasken.
25: Menene zafin launi?
Lokacin da launin da ke fitowa daga hasken ya kasance daidai da launin da baƙar fata ke haskakawa a wani yanayin zafi, zafin jiki na baki shine zafin launi.
26: Menene haske mai haske?
Ƙarfin haske a kowane yanki na allon nuni na LED, a cikin cd / m2, shine kawai ƙarfin haske a kowace murabba'in mita na allon nuni;
27: Menene matakin haske?
Matsayin jagora ko daidaitawa ta atomatik tsakanin mafi ƙarancin haske da mafi girman haske na gabaɗayan allo
28: Menene ma'aunin launin toka?
A daidai wannan matakin haske, matakin sarrafa fasaha na allon nuni daga mafi duhu zuwa mafi haske;
29: Menene bambanci?
Shi ne rabo daga baki zuwa fari, wato, a hankali gradation daga baki zuwa fari.Mafi girma da rabo, da karin gradation daga baki zuwa fari, da kuma aukaka da launi wakilci.A cikin masana'antar majigi, akwai hanyoyin gwaji guda biyu.Ɗayan ita ce hanyar gwajin bambanci mai buɗewa/cikakken-kusa, wato, gwada daidaitaccen haske na cikakken farin allo zuwa cikakken fitowar allo na baƙar fata ta na'ura.Sauran shine bambancin ANSI, wanda ke amfani da hanyar gwajin ma'auni na ANSI don gwada bambanci.Hanyar gwajin bambanci ta ANSI tana amfani da tubalan launin baki da fari masu maki 16.Matsakaicin matsakaicin haske na wuraren farar fata takwas da matsakaicin haske na wuraren baƙar fata takwas shine bambancin ANSI.Matsalolin da aka samu ta hanyar waɗannan hanyoyin aunawa guda biyu sun bambanta sosai, wanda kuma shine muhimmin dalili na babban bambanci na ƙima na samfuran ƙira daga masana'anta daban-daban.Ƙarƙashin wasu hasken yanayi, lokacin da manyan launuka na allon nuni na LED suke a matsakaicin haske da matsakaicin matakin launin toka.
30: Menene PCB?
PCB an buga allon kewayawa;
31: Menene BOM?
BOM shine lissafin kayan (gajartar da Bill of material);
32: Menene ma'aunin fari?Menene tsarin ma'auni na fari?
Da fari ma'auni, muna nufin ma'auni na fari, wato, ma'auni na haske na R, G da B a cikin rabo na 3: 6: 1;Daidaita rabon haske da fararen fararen launuka na R, G da B ana kiran daidaitattun ma'auni;
33: Menene bambanci?
Matsakaicin matsakaicin haske na allon nuni na LED zuwa haske na bango a ƙarƙashin wani haske na yanayi;
34: Menene mitar canjin firam?
Yawan lokutan da aka sabunta bayanin allon nuni kowane lokaci naúrar;
35: Menene adadin wartsakewa?
Yawan lokutan nunin nuni yana maimaita nuni da allon nuni;
36: Menene tsawon zango?
Wavelength (λ): Nisa tsakanin madaidaicin maki ko nisa tsakanin kololuwa biyu masu kusa ko kwaruruka a cikin lokutan da ke kusa da su yayin yaduwar igiyar ruwa, yawanci a cikin mm
37: Menene ƙuduri
Manufar ƙuduri kawai tana nufin adadin maki da aka nuna a kwance da a tsaye akan allon
38: Menene hangen nesa?Menene kusurwar gani?Menene mafi kyawun hangen nesa?
Kusurwar kallo ita ce kusurwar da ke tsakanin kwatancen kallo guda biyu akan jirgin sama guda da kuma al'adar al'ada lokacin da hasken jagorar kallo ya faɗi zuwa 1/2 na al'ada na nunin LED.Ya kasu kashi a kwance da mahalli;Kusurwar da ake iya gani ita ce kusurwa tsakanin jagorancin abun ciki na hoto akan allon nuni da kuma al'ada na allon nuni;Mafi kyawun kusurwar kallo shine kusurwa tsakanin mafi kyawun jagora na abun ciki na hoto da layin al'ada;
39: Menene mafi kyawun tazarar gani?
Yana nufin nisa a tsaye tsakanin mafi kyawun matsayi na abun ciki na hoton da jikin allo, wanda kawai zai iya ganin abubuwan da ke cikin allon gaba ɗaya ba tare da bambancin launi ba;
40: Menene ma'anar rasa iko?Guda nawa?
Pixels wanda yanayin haske bai dace da buƙatun sarrafawa ba;An raba wuraren da ba a sarrafa su zuwa: makaho (wanda kuma aka sani da mataccen tabo), tabo mai haske (ko tabo mai duhu), da wurin walƙiya;
41: Mene ne a tsaye drive?Menene scan drive?Menene bambanci tsakanin su biyun?
Ikon "ma'ana zuwa aya" daga fitin fitarwa na tuƙi IC zuwa pixel ana kiransa tuƙi mai tsayi;The "point to column" iko daga fitarwa fil na drive IC zuwa pixel point ake kira scanning drive, wanda na bukatar a jere iko kewaye;Ana iya gani a fili daga allon tuƙi cewa faifan madaidaicin ba ya buƙatar kewayar sarrafa layi, kuma farashi yana da yawa, amma tasirin nuni yana da kyau, kwanciyar hankali yana da kyau, kuma asarar haske kaɗan ne;Na'urar dubawa tana buƙatar da'irar sarrafa layi, amma farashinsa ba shi da ƙarfi, tasirin nuni ba shi da kyau, kwanciyar hankali ba shi da kyau, hasarar haske babba ce, da sauransu;
42: Mene ne akai halin yanzu drive?Menene motsin matsa lamba akai-akai?
Constant halin yanzu yana nufin ƙimar halin yanzu da aka ƙayyade a cikin ƙira na fitarwa akai-akai a cikin yanayin aiki da aka halatta na tuƙi IC;Ƙimar wutar lantarki ta yau da kullun tana nufin ƙimar ƙarfin lantarki da aka ƙayyade a cikin ƙirar ƙira ta dindindin a cikin yanayin aiki da aka halatta na tuƙi IC;
43: Menene gyaran da ba na layi ba?
Idan an nuna fitowar siginar dijital ta kwamfuta akan allon nunin LED ba tare da gyara ba, murdiya launi zai faru.Sabili da haka, a cikin da'irar sarrafa tsarin, siginar da ake buƙata don nunin nuni da aka ƙididdige siginar fitarwa ta asali ta kwamfuta ta hanyar aiki maras kyau ana kiransa gyare-gyare maras kyau saboda alakar da ba ta dace ba tsakanin sigina na gaba da na baya;
44: Menene ƙimar ƙarfin aiki?Menene ƙarfin ƙarfin aiki?Menene ƙarfin wutar lantarki?
Ƙimar wutar lantarki mai aiki tana nufin ƙarfin lantarki lokacin da kayan lantarki ke aiki akai-akai;Wutar lantarki na aiki yana nufin ƙimar ƙarfin lantarki na kayan lantarki a ƙarƙashin aiki na yau da kullun a cikin ƙimar ƙarfin lantarki;Wutar wutar lantarki ta kasu zuwa wutar lantarki ta AC da DC.Wutar wutar lantarki ta AC na allon nuninmu shine AC220V ~ 240V, kuma ƙarfin wutar lantarki na DC shine 5V;
45: Menene murdiya launi?
Yana nufin bambancin da ke tsakanin hankalin idon ɗan adam da hangen nesa lokacin da aka nuna abu ɗaya a cikin yanayi da kuma akan allon nuni;
46: Menene tsarin aiki tare da tsarin asynchronous?
Aiki tare da asynchrony suna da alaƙa da abin da kwamfutoci ke faɗi.Abin da ake kira tsarin aiki tare yana nufin tsarin kula da nuni na LED wanda abubuwan da ke nunawa akan allon nuni da nunin kwamfuta suna aiki tare;Tsarin Asynchronous yana nufin cewa bayanan nuni da kwamfuta ta shirya ana adana su a cikin tsarin kula da allon nuni a gaba, kuma nunin nunin LED na yau da kullun ba zai taɓa faruwa ba bayan an kashe kwamfutar.Irin wannan tsarin kulawa shine tsarin asynchronous;
47: Menene fasahar gano makaho?
Ana iya gano wurin makaho (LED buɗaɗɗen kewayawa da gajeriyar kewayawa) akan allon nuni ta hanyar babbar manhajar kwamfuta da kayan aikin da ke ƙasa, kuma ana iya samar da rahoto don gaya wa manajan allo na LED.Irin wannan fasaha ita ake kira fasahar gano tabo;
48: Menene gano wuta?
Ta hanyar babbar kwamfuta software da kasa hardware, zai iya gane aiki yanayi na kowane wutan lantarki a kan nuni allon da samar da wani rahoto don gaya wa LED allo manajan.Irin wannan fasaha ita ake kira fasahar gano wutar lantarki
49: Menene gano haske?Menene daidaitawar haske?
Haske a cikin gano haske yana nufin hasken yanayi na allon nunin LED.Na'urar firikwensin haske yana gano hasken yanayi na allon nuni.Wannan hanyar ganowa ita ake kira gano haske;Haske a cikin daidaitawar haske yana nufin hasken hasken da ke fitowa daga nunin LED.Ana mayar da bayanan da aka gano zuwa na'urar sarrafa nunin LED ko kwamfuta mai sarrafawa, sannan a daidaita hasken nuni bisa ga wannan bayanan, wanda ake kira daidaitawar haske.
50: Menene ainihin pixel?Menene pixel kama-da-wane?pixels nawa nawa ne?Menene raba pixel?
pixel na gaske yana nufin alakar 1:1 tsakanin adadin pixels na zahiri akan allon nuni da adadin pixels da aka nuna a zahiri.Ainihin adadin maki akan allon nuni na iya nuna bayanan hoto na maki nawa ne kawai;pixel Virtual yana nufin alakar da ke tsakanin adadin pixels na zahiri akan allon nuni da adadin ainihin pixels da aka nuna shine 1: N (N=2, 4).Yana iya nuna pixels na hoto sau biyu ko huɗu fiye da ainihin pixels akan allon nuni;Za a iya raba pixels na zahiri zuwa software na kama-da-wane da kayan aikin kama-da-wane bisa ga yanayin sarrafa kama-da-wane;Ana iya raba shi zuwa kama-da-wane sau 2 da na kama-da-wane sau 4 bisa ga alakar da yawa, kuma ana iya raba shi zuwa kama-da-wane na 1R1G1B da 2R1G1GB bisa ga hanyar tsara fitilu a kan module;
51: Menene remote control?A wani yanayi?
Abin da ake kira nisa mai tsayi ba lallai ba ne nisa mai nisa.Ikon nesa ya haɗa da babban iko da ƙarshen sarrafawa a cikin LAN, kuma nisan sararin samaniya ba shi da nisa;Kuma babban ƙarshen sarrafawa da ƙarshen sarrafawa a cikin ɗan ƙaramin sarari mai nisa;Idan buƙatun abokin ciniki ko matsayin kulawar abokin ciniki ya wuce nisa kai tsaye da fiber na gani ke sarrafawa, za a yi amfani da na'ura mai nisa;
52: Menene watsa fiber na gani?Menene watsa kebul na hanyar sadarwa?
Watsawar fiber na gani shine canza siginar lantarki zuwa siginar gani da amfani da fiber gilashin gaskiya don watsawa;Watsawar kebul na hanyar sadarwa shine watsa siginar lantarki kai tsaye ta amfani da wayoyi na ƙarfe;
53: Yaushe zan yi amfani da kebul na cibiyar sadarwa?Yaushe ake amfani da fiber na gani?
Lokacin da nisa tsakanin allon nuni da kwamfuta mai sarrafawa
54: Menene sarrafa LAN?Menene sarrafa Intanet?
A cikin LAN, kwamfuta ɗaya tana sarrafa wata kwamfuta ko na'urorin waje da aka haɗa da ita.Wannan hanyar sarrafawa ana kiranta LAN control;Babban mai sarrafa yana cimma manufar sarrafawa ta hanyar shiga adireshin IP na mai sarrafawa a cikin Intanet, wanda ake kira sarrafa Intanet.
55: Menene DVI?Menene VGA?
DVI ita ce taƙaitawar Interface Bidiyo ta Dijital, wato, fasahar bidiyo ta dijital.Yana da siginar siginar bidiyo na dijital a halin yanzu ana amfani da shi a duniya;Cikakken sunan Ingilishi na VGA shine Video Graphic Array, wato nunin zane-zane.Yana da R, G da B analog fitarwa siginar dubawa;
56: Menene siginar dijital?Menene kewaye na dijital?
Sigina na dijital yana nufin cewa ƙimar girman siginar yana da hankali, kuma wakilcin girman yana iyakance ga 0 da 1;Da'irar don sarrafawa da sarrafa irin waɗannan sigina ana kiranta da'ira na dijital;
57: Menene siginar analog?Menene kewayen analog?
Siginar analog yana nufin cewa ƙimar girman siginar yana ci gaba cikin lokaci;Da’irar da ke sarrafa wannan nau’in siginar ita ce ake kira da’irar analog;
58: Menene ramin PCI?
Ramin PCI rami ne na faɗaɗawa dangane da bas ɗin gida na PCI (hanyoyin faɗaɗa faɗaɗawa na gefe).Ramin PCI shine babban ramin fadadawa na motherboard.Ta hanyar toshe katunan fadada daban-daban, kusan duk ayyukan waje waɗanda za a iya samun su ta hanyar kwamfuta na yanzu;
59: Menene Ramin AGP?
Hanzarta zane-zane.AGP ƙayyadaddun ƙayyadaddun bayanai ne wanda ke ba da damar zane-zanen 3D don nunawa cikin sauri cikin sauri akan kwamfutoci na yau da kullun.AGP wani masarrafa ce da aka ƙera don watsa zane-zanen 3D cikin sauri kuma cikin kwanciyar hankali.Yana amfani da babban ƙwaƙwalwar ajiyar kwamfuta ta yau da kullun don sabunta hoton da aka nuna akan nunin, kuma yana goyan bayan fasahar zane na 3D kamar taswira taswira, buffering sifili da haɗawar alpha.
60: Menene GPRS?Menene GSM?Menene CDMA?
GPRS ita ce Babban Sabis na Rediyo, sabon sabis ɗin da aka ƙera akan tsarin GSM da ake da shi, galibi ana amfani da shi don sadarwar rediyo;GSM shine takaitaccen ma'auni na "GlobalSystemForMobileCommunication" (Global Mobile Communication System) wanda Hukumar Tarayyar Turai ta ƙaddamar da daidaito a cikin 1992. Yana amfani da fasahar sadarwar dijital da ƙa'idodin cibiyar sadarwa guda ɗaya don tabbatar da ingancin sadarwa kuma yana iya haɓaka ƙarin sabbin ayyuka ga masu amfani. .Code Division Multiple Access sabuwar fasaha ce kuma balagagge mara waya ta hanyar sadarwa bisa tsarin fasahar watsawa;
61: Menene amfanin fasahar GPRS don nunin allo?
Akan hanyar sadarwar bayanai ta GPRS dangane da sadarwar wayar hannu, ana isar da bayanan nunin LED ɗin mu ta hanyar GPRS transceiver module, wanda zai iya gane ƙaramin adadin watsa bayanai daga nesa-zuwa aya!Cimma manufar sarrafa nesa;
62: Menene sadarwar RS-232, sadarwar RS-485, da RS-422 sadarwa?Menene amfanin kowanne?
RS-232;RS-485;RS422 daidaitaccen tsarin sadarwa ne na kwamfuta
Cikakken suna na daidaitattun RS-232 (ka'ida) shine ma'aunin EIA-RS-232C, wanda EIA (Ƙungiyar Masana'antu ta Lantarki) ke wakiltar Ƙungiyar Masana'antar Lantarki ta Amurka, RS (ma'aunin shawarar) yana wakiltar ma'aunin shawarar, 232 shine lambar tantancewa, kuma C yana wakiltar sabon bita na RS232
Ƙimar matakin sigina na RS-232 dubawa yana da girma, wanda ke da sauƙi don lalata guntu na kewayawa.Yawan watsawa yayi ƙasa, kuma nisan watsawa yana iyakance, gabaɗaya tsakanin 20M.
RS-485 yana da nisan sadarwa na dubun-dubatar mita zuwa dubban mita.Yana amfani da daidaitaccen watsawa da liyafar banbanta.RS-485 ya dace sosai don haɗin kai-maki.
RS422 bas, RS485 da RS422 da'irori iri ɗaya ne a ka'ida.Ana aika su kuma ana karɓar su ta yanayin banbanta, kuma basa buƙatar waya ƙasa ta dijital.Bambance-bambancen aiki shine ainihin dalili na nisan watsawa mai nisa a daidai wannan ƙimar, wanda shine babban bambanci tsakanin RS232 da RS232, saboda RS232 shigarwar da fitarwa ce mai ƙarewa ɗaya, kuma aƙalla ana buƙatar wayar ƙasa ta dijital don aikin duplex.Layin aikawa da karɓar layin layi ne guda uku (watsawa asynchronous), kuma ana iya ƙara wasu layukan sarrafawa don kammala aiki tare da sauran ayyuka.
RS422 na iya aiki a cikin cikakken duplex ba tare da shafar juna ta hanyar nau'i-nau'i na nau'i-nau'i biyu ba, yayin da RS485 kawai zai iya aiki a cikin rabin duplex.Ba za a iya aiwatar da aikawa da karɓa a lokaci guda ba, amma yana buƙatar nau'i-nau'i na murdaɗi ɗaya kawai.
RS422 da RS485 na iya watsa mita 1200 a 19 kpbs.Ana iya haɗa na'urori akan sabon layin transceiver.
63: Menene tsarin ARM?Ga masana'antar LED, menene amfaninta?
ARM (Advanced RISC Machines) kamfani ne na musamman a cikin ƙira da haɓaka kwakwalwan kwamfuta dangane da fasahar RISC (Rage Instruction Set Computer).Ana iya la'akari da shi azaman sunan kamfani, sunan gaba ɗaya na nau'in microprocessors, da sunan fasaha.Tsarin sarrafa sigina da sarrafa siginar da ke kan CPU tare da wannan fasaha ana kiransa tsarin ARM.Tsarin kulawa na musamman na LED da aka yi da fasahar ARM na iya gane sarrafa asynchronous.Hanyoyin sadarwa na iya haɗawa da hanyar sadarwa ta abokan-zuwa, LAN, Intanet, da sadarwar serial.Ya ƙunshi kusan dukkanin mu'amalar PC;
64: Menene kebul na USB?
Gajartawar Ingilishi na USB shine Universal Serial Bus, wanda ke fassara zuwa Sinanci a matsayin "Universal Serial Bus", kuma aka sani da Interface Serial Universal.Yana iya tallafawa toshe zafi kuma yana iya haɗawa zuwa na'urorin waje na PC 127;Akwai ma'auni guda biyu: USB1.0 da USB2.0
Lokacin aikawa: Fabrairu-18-2023