I-Serial Port vs VGA: Uyini umehluko?

Imininingwane Yobuchwepheshe: Imbobo ye-serial vs. VGA

Ukuqonda imininingwane yobuchwepheshe yazo zombili izimbobo ze-serial kanye nezimbobo ze-VGA kunikeza ukuqonda ngokufaneleka kwazo kwemisebenzi ethile, ikakhulukazi ezindaweni ezidinga ukudluliswa kwedatha noma ukuphuma kwevidiyo. Lesi sigaba sihlola izici zobuchwepheshe ezibalulekile, okuhlanganisa isilinganiso sedatha, ububanzi besignali, ukulungiswa, namazinga avamile.

A. Izinga Ledatha kanye Nomkhawulokudonsa

Imbobo yomkhiqizo:

Izinga Ledatha:Izimbobo ze-serial ngokuvamile zisebenza ngesivinini esiphansi, namazinga aphezulu edatha afika ku-115.2 kbps. Lesi sivinini esiphansi siyenza ifanelekele ukudluliswa kwedatha kancane kancane lapho kungadingeki khona ukudlulisa ngesivinini esikhulu.

Ububanzi:Izidingo zomkhawulokudonsa wembobo ye-serial zincane, njengoba iphrothokholi isekela ukuxhumana kwephuzu nephuzu.

Ukufaneleka Kohlelo:Ngenxa yesilinganiso sayo sedatha esilinganiselwe, imbobo ye-serial ingcono kakhulu kuzinhlelo zokusebenza zezimboni lapho ubuqotho bedatha ngaphezu kwesivinini kubalulekile, njengokuxhuma okokusebenza kwefa, amamodemu, nezinhlobo ezithile zezinzwa.

Imbobo ye-VGA:

Izinga Ledatha:Izimbobo ze-VGA azidluliseli idatha ngendlela efanayo nezimbobo ze-serial. Esikhundleni salokho, badlulisela amasiginali wevidiyo ye-analog ngamanani asekela izinqumo ezihlukene kanye namazinga okuvuselela. Umkhawulokudonsa we-VGA unqunywa ukulungiswa kwevidiyo; isibonelo, i-640x480 (i-VGA ejwayelekile) idinga umkhawulokudonsa ophansi kuno-1920x1080.

Isidingo Somkhawulokudonsa:I-VGA idinga umkhawulokudonsa omningi kakhulu kunezimbobo ze-serial, ikakhulukazi ezinqumweni eziphakeme lapho ukujula kombala okuphezulu nezinga lokuvuselela kubalulekile.

Ukufaneleka Kohlelo:Izimbobo ze-VGA zilungele ukubonisa okuqukethwe kwevidiyo kumamonitha namaphrojektha, ikakhulukazi kuzilungiselelo zokukhishwa kwevidiyo yefa.

B. Ububanzi Besiginali kanye Nobude Bekhebula

Imbobo yomkhiqizo:

Ubude obukhulu bekhebula:I-RS232 ejwayelekile yezimbobo ze-serial isekela ubude bekhebula obukhulu obucishe bube ngamamitha ayi-15 ngaphansi kwezimo ezifanele. Ukwehliswa kwesignali kungenzeka kumabanga amade, ngakho-ke ngokuvamile kusetshenziselwa ukuxhumana kwebanga elifushane ukuya kokwemaphakathi.

Ukumelana Nomsindo:Ngenxa yobubanzi bayo bamandla kagesi obubanzi (kusuka ku -3V ukuya -15V kokunengqondo okuthi “1” kanye +3V kuya +15V kokuthi “0” okunengqondo), imbobo ye-serial inokumelana okunengqondo nomsindo, okuyenza ifanelekele izindawo zezimboni lapho ukuphazamiseka kukagesi kuvame.

Imbobo ye-VGA:

Ubude obukhulu bekhebula:Amakhebuli e-VGA ngokuvamile asebenza kahle aze afike kumamitha angu-5-10 ngaphandle kokonakala kwesignali okuphawulekayo. Ngalé kwalobu bubanzi, ikhwalithi yesiginali ye-analogi ingase ibe mbi, okuholela ezithombeni ezilufifi futhi kuncishiswe ukucaca okubonakalayo.

Ikhwalithi Yesiginali:Isignali ye-analog ye-VGA isengozini enkulu yokuphazamiseka ebangeni elide uma iqhathaniswa namasiginali edijithali, okungaba nomthelela kwikhwalithi yesithombe ezibonisini uma ubude bekhebula budlula imikhawulo efanele.

C. Ukulungiswa kanye Nekhwalithi Yesithombe

Imbobo yomkhiqizo:

Isixazululo:Njengoba imbobo ye-serial isetshenziselwa ukudluliswa kwedatha, ayinakho ukucaciswa kwesinqumo. Idlulisa idatha kanambambili (amabhithi) ngaphandle kwengxenye ebonakalayo noma eyisithombe.

Ikhwalithi Yesithombe:Akusebenzi ezimbobeni ze-serial, njengoba umsebenzi wazo oyinhloko uwukushintshanisa idatha kunokukhipha ividiyo.

Imbobo ye-VGA:

Ukusekelwa Kwesixazululo:I-VGA isekela izinqumo eziningi kuya ngesibonisi nomthombo wevidiyo. Ukulungiswa okujwayelekile kwe-VGA ngamaphikseli angu-640x480, kodwa izimbobo eziningi ze-VGA zingasekela kufika ku-1920x1080 noma ngaphezulu kumamonitha ahambisanayo.

Ikhwalithi Yesithombe:Njengoba iyisiginali ye-analog, ikhwalithi yesithombe se-VGA incike ezintweni ezifana nekhwalithi yekhebula, ubude, nokuphazanyiswa kwesignali. Ngezintambo ezinde, amasignali e-VGA angalahlekelwa ukucijile, okuholela ekubonakaleni okufiphele.

D. Amazinga Ajwayelekile kanye Nezinqubo

I-Serial Port Standards:

Izinga le-RS232 iphrothokholi ejwayeleke kakhulu yezimbobo ze-serial, echaza imininingwane yamazinga kagesi, izilinganiso ze-baud, nokucushwa kwamaphini.

Amanye amazinga afana ne-RS485 ne-RS422 nawo akhona kodwa asetshenziselwa izinhlelo zokusebenza ezidinga ukusayina okuhlukile nokusekelwa kwamabanga amade noma amadivaysi amaningi.

Amazinga e-VGA:

I-VGA (I-Video Graphics Array): Izinga lokuqala, elisekela ukulungiswa okungu-640x480 ngesilinganiso sokuvuselela esingu-60 Hz.

I-VGA Enwetshiwe (i-XGA, i-SVGA): Ukuvumelanisa kwakamuva kusekela ukulungiswa okuphezulu nokujula kombala okuthuthukisiwe, okuvumela i-VGA ukuthi ibonise ukulungiswa okufika ku-1080p kwamanye amamonitha.