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Serial Port vs VGA: Itandukaniro irihe?
1.Intangiriro kuri Port Serial na VGA
Mwisi yisi ibyuma bya mudasobwa hamwe nibikoresho bihuza, kumva itandukaniro riri hagati yicyambu gikurikirana nicyambu cya VGA ningirakamaro mugushiraho umurage na sisitemu yihariye. Mugihe ibyambu byombi bikora nkibihuza bifatika kubikoresho bitandukanye, buri kimwe gifite imikorere itandukanye, ubwoko bwibimenyetso, kandi bikoreshwa mugukwirakwiza amakuru no kwerekana amashusho.
Icyambu gikurikirana ni iki?
Icyambu gikurikirana ni ubwoko bwitumanaho ryagenewe kohereza amakuru buhoro buhoro kumuyoboro umwe, bizwi kandi nkitumanaho rikurikirana. Mubisanzwe bigaragara mubikoresho bishaje, ibyambu byuruhererekane bikoreshwa cyane muguhuza ibikoresho byinganda, umurage wa peripheri, hamwe nibikoresho byitumanaho bishingira muburyo bworoshye, bwihuse bwamakuru. Porotokole ya RS232 nicyo gisanzwe cyane ku byambu bikurikirana, ukoresheje DB9 cyangwa DB25.
Icyambu cya VGA ni iki?
Icyambu cya VGA (Video Graphics Array) ni videwo izwi cyane ya videwo ikoreshwa cyane cyane muguhuza monitor na umushinga. VGA yohereza ibimenyetso bisa mubyerekanwe, bigatuma bihuza na monitor ya CRT hamwe na ecran nyinshi za LCD. Ibyambu bya VGA bifashisha DB15 ihuza kandi bigashyigikira imyanzuro igera kuri 640 x 480 muburyo busanzwe bwa VGA, hamwe ninkunga yagutse kubisubizo bihanitse bitewe nicyuma.
Imbonerahamwe
- 1. Intangiriro kuri Serial Port na VGA
- 2. Itandukaniro ryibanze hagati ya Serial na VGA
- 3. Ibisobanuro bya tekiniki: Icyambu cya Serial na VGA
- 4. Guhitamo Hagati ya Serial na VGA
Itandukaniro ryibanze hagati ya Serial na VGA
| Ikiranga | Icyambu | Icyambu cya VGA |
| Igikorwa Cyibanze | Kohereza amakuru | Kugaragara |
| Ubwoko bw'ikimenyetso | Digitale (RS232 protocole) | Ikigereranyo (Imiyoboro ya RGB) |
| Ubwoko bwumuhuza | DB9 cyangwa DB25 | DB15 |
| Porogaramu Rusange | Ibikoresho byinganda, modem | Abakurikirana, umushinga |
| Icyemezo Cyiza | Ntabwo ari ngombwa | Mubisanzwe bigera kuri 640x480, hejuru bitewe nibyuma |
Ibisobanuro bya tekiniki: Icyambu cya Serial na VGA
Gusobanukirwa tekinike yubuhanga bwibyambu byombi hamwe nicyambu cya VGA bitanga ubushishozi kubijyanye nibikorwa byihariye, cyane cyane mubidukikije bisaba kohereza amakuru cyangwa gusohora amashusho. Iki gice kirasesengura ibintu byingenzi bya tekiniki, harimo igipimo cyamakuru, urutonde rwibimenyetso, gukemura, hamwe nibisanzwe.
A. Igipimo cyamakuru nubunini bwagutse
Icyambu gikurikirana:
Igipimo cyamakuru:Ibyambu byuruhererekane bikora kumuvuduko muto, hamwe nibipimo ntarengwa byamakuru bigera kuri 115.2 kbps. Uyu muvuduko wo hasi utuma bikwiranye na bito-bito yohererezanya amakuru aho byihuta byinjira bidakenewe.
Umuyoboro mugari:Umuyoboro mugari wa porte ni ntoya, nkuko protocole ishyigikira itumanaho ryoroshye.
Gusaba ibisabwa:Bitewe nigipimo cyacyo gito, icyambu ni cyiza kubikorwa byinganda aho ubunyangamugayo bwamakuru arihuta, nko guhuza ibikoresho byumurage, modem, nubwoko bumwe na bumwe bwa sensor.
Icyambu cya VGA:
Igipimo cyamakuru:Ibyambu bya VGA ntabwo byohereza amakuru muburyo bumwe nkibyambu byuruhererekane. Ahubwo, bohereza ibimenyetso byerekana amashusho kubiciro bishyigikira imyanzuro itandukanye kandi igarura ibiciro. Umuyoboro wa VGA ugenwa no gukemura amashusho; kurugero, 640x480 (igipimo cya VGA) gisaba umurongo muto ugereranije na 1920x1080.
Umuyoboro mugari:VGA isaba umurongo mugari kuruta ibyambu byuruhererekane, cyane cyane kumyanzuro ihanitse aho ubujyakuzimu bwamabara menshi hamwe nigipimo cyo kugarura ibintu ni ngombwa.
Gusaba ibisabwa:Ibyambu bya VGA nibyiza byo kwerekana ibiri kuri videwo kuri moniteur na projet, cyane cyane mugusohora amashusho yumurage.
B. Urwego rw'ibimenyetso n'uburebure bwa Cable
Icyambu gikurikirana:
Uburebure ntarengwa bwa Cable:RS232 isanzwe yicyambu ikurikirana ishyigikira uburebure bwa kabili bwa metero 15 mugihe cyiza. Gutesha agaciro ibimenyetso bishobora kugaragara intera ndende, kubwibyo bikoreshwa muburyo bugufi kandi buringaniye.
Kurwanya urusaku:Bitewe numuyoboro mugari wawo (kuva kuri -3V kugeza -15V kuri logique "1" na + 3V kugeza + 15V kuri logique "0"), icyambu gikurikirana gifite imbaraga zo kurwanya urusaku, bigatuma gikwiranye ninganda zinganda aho usanga guhuza amashanyarazi bikunze kugaragara.
Icyambu cya VGA:
Uburebure ntarengwa bwa Cable:Intsinga ya VGA muri rusange ikora neza kugeza kuri metero 5-10 nta kimenyetso kigaragara cyangirika. Kurenga iyi ntera, ubwiza bwibimenyetso birashobora kwangirika, bikavamo amashusho atagaragara kandi bikagabanuka neza.
Ubwiza bw'ikimenyetso:Ikimenyetso cya VGA kirashobora kworoha cyane kwivanga intera ndende ugereranije nibimenyetso bya digitale, bishobora kugira ingaruka kumiterere yibishusho mugihe uburebure bwa kabili burenze imipaka ntarengwa.
C. Icyemezo nubuziranenge bwibishusho
Icyambu gikurikirana:
Umwanzuro:Kubera ko icyambu gikurikirana gikoreshwa mu kohereza amakuru, ntigishobora gukemurwa. Itanga amakuru abiri (bits) idafite ibice bigaragara cyangwa bishushanyije.
Ubwiza bw'ishusho:Ntabwo bikurikizwa kubyambu byuruhererekane, nkibikorwa byabo byibanze ni uguhana amakuru kuruta gusohora amashusho.
Icyambu cya VGA:
Inkunga y'Icyemezo:VGA ishyigikira imyanzuro itandukanye bitewe niyerekanwa ninkomoko ya videwo. Igisubizo cya VGA gisanzwe ni 640x480 pigiseli, ariko ibyambu byinshi bya VGA birashobora gushyigikira kugeza 1920x1080 cyangwa birenga kuri monitor ikurikirana.
Ubwiza bw'ishusho:Kuba ikimenyetso gisa, ubwiza bwibishusho bwa VGA biterwa nibintu nkubwiza bwa kabili, uburebure, hamwe no guhuza ibimenyetso. Kurenza insinga ndende, ibimenyetso bya VGA birashobora gutakaza ubukana, bikavamo kutabona neza.
D. Ibipimo bisanzwe hamwe na protocole
Ibipimo byerekana ibyambu:
Ibipimo bya RS232 nibisanzwe protocole yicyambu, isobanura ibisobanuro kurwego rwa voltage, igipimo cya baud, hamwe na pin iboneza.
Ibindi bipimo nka RS485 na RS422 nabyo birahari ariko bikoreshwa mubisabwa bisaba ibimenyetso bitandukanye no gushyigikira intera ndende cyangwa ibikoresho byinshi.
Ibipimo bya VGA:
VGA (Video Graphics Array): Igipimo cyumwimerere, gishyigikira 640x480 ikemurwa kuri 60 Hz yo kugarura ubuyanja.
VGA yagutse (XGA, SVGA): Nyuma yo guhuza n'imihindagurikire y'ikirere ishyigikira imyanzuro ihanitse kandi ikongerera uburebure bwamabara, bigatuma VGA yerekana imyanzuro igera kuri 1080p kuri moniteur zimwe.
Guhitamo Hagati ya Serial na VGA
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