Dab tsi yog qhov txawv ntawm D-sub thiab DB9?

1, Txheej txheem cej luam ntawm D-sub connectors:
D-sub connector yog ib qho cable txuas uas feem ntau siv rau kev xa cov ntaub ntawv ntawm cov khoos phis tawj thiab lwm yam khoom siv hluav taws xob. Lub "D" nyob rau hauv nws lub npe yog hais txog cov duab ntawm lub connector, uas yog D-shaped. D-sub connectors tuaj yeem siv los xa ntau yam teeb liab, suav nrog video, serial thiab parallel cov ntaub ntawv, nrog rau kev tswj cov teeb liab.
D-sub connectors tuaj nyob rau hauv ntau yam specifications, nrog rau cov specifications xws li 9 pin, 15 pin, 25 pin, thiab 37 pin. Ntawm lawv, DB9 connector yog ib qho ntawm lawv, thiab nws lub hom phiaj tshwj xeeb yuav tau tham hauv kev nthuav dav tom qab.
2, DB9 connector nta:
DB9 connector yog ib hom D-sub connector, thiab "9" nyob rau hauv nws lub npe qhia tias connector muaj 9 pins. Nws yog feem ntau siv rau kev sib txuas lus serial, xws li RS -232 serial kev sib txuas lus tus qauv. Hauv cov khoos phis tawj thiab lwm yam khoom siv hluav taws xob, DB9 connectors feem ntau yog siv los txuas cov khoom siv sib txuas xws li modems, tshuab luam ntawv, koob yees duab digital, thiab lwm yam.
Kev faib tus pin ntawm DB9 connectors feem ntau yog tus qauv, suav nrog xa cov ntaub ntawv kab, tau txais cov ntaub ntawv kab, kab hauv av, thiab lwm yam. Vim nws txoj kev siv dav hauv kev sib txuas lus, DB9 connectors tau yog ib qho ntawm cov kev sib txuas hauv hluav taws xob rau ob peb lub xyoo dhau los. .
3, Qhov txawv ntawm D-sub thiab DB9:
Tus lej pins: Muaj ntau yam tshwj xeeb rau D-sub txuas, thiab DB9 yog ib qho ntawm lawv, nrog 9 tus pins. Lwm cov kev qhia tshwj xeeb tuaj yeem suav nrog 15, 25, lossis 37 tus pins, txhua qhov sib txawv.
Kev Siv: D-sub connectors yog dav siv nyob rau hauv ntau yam kev siv, xws li video kis tau tus mob, thaum uas tig mus cov ntaub ntawv kis tau tus mob, thiab tswj cov teeb liab kis tau tus mob. DB9 connector feem ntau yog siv rau kev sib txuas lus, xws li RS -232 tus qauv kev sib txuas lus interface.
Standardization: txawv specifications ntawm D-sub connectors tej zaum yuav txawv nyob rau hauv cov nqe lus ntawm tus pin suav thiab layout, thaum DB9 connectors muaj tus qauv tus pin assignments, ua rau lawv siv dav nyob rau hauv serial kev sib txuas lus.
Daim ntawv thov thaj chaw: Vim nws muaj ntau yam, D-sub connectors tuaj yeem pom nyob rau hauv ntau yam xwm txheej, thaum DB9 connectors tau tsom mus rau kev sib txuas lus serial, xws li txuas cov khoom siv sib txuas.
Keeb Kwm: Keeb kwm ntawm D-sub connectors tuaj yeem taug qab mus rau xyoo 1950, thaum daim ntawv thov ntawm DB9 connectors hauv computers thiab khoom siv sib txuas lus tau pib hauv 1970s. Yog li ntawd, D-sub connectors muaj keeb kwm ntev ntawm txoj kev loj hlob, thiab DB9 connectors yog ib tug kuj tshiab variant ntawm lawv.