In computer parlance, data bus- tseem hu ua processor bus, front side bus, frontside bus or backside bus-yog ib pab pawg ntawm cov xov hluav taws xob xa xov (cov ntaub ntawv) ntawm ob lossis ntau yam khoom. Intel processor nyob rau hauv kab tam sim no ntawm Macs, piv txwv li, siv 64-ntsis cov ntaub ntawv tsheb npav los txuas cov processor rau nws lub cim xeeb.
Bus dav
Ib lub npav cov ntaub ntawv muaj ntau yam sib txawv, tab sis ib qho tseem ceeb tshaj plaws yog nws qhov dav. Qhov dav ntawm cov ntaub ntawv tsheb npav yog hais txog tus lej ntawm cov khoom siv (cov xov hlau hluav taws xob) uas ua rau lub tsheb npav. Cov ntaub ntawv tsheb npav dav dav suav nrog 1-, 4-, 8-, 16-, 32-, thiab 64-ntsis.
Thaum cov tuam txhab xa mus rau tus lej ntawm cov khoom siv processor siv, xws li "Lub khoos phis tawj no siv 64-ntsis processor," lawv hais txog qhov dav ntawm cov ntaub ntawv tsheb npav pem hauv ntej, lub npav uas txuas cov processor rau nws lub ntsiab nco. Lwm hom tsheb npav cov ntaub ntawv siv hauv khoos phis tawj suav nrog lub npav rov qab, uas txuas cov processor mus rau lub cim xeeb cache.
Ib lub tsheb npav cov ntaub ntawv feem ntau yog tswj hwm los ntawm tus tswj lub npav uas tswj xyuas cov ntaub ntawv ceev ntawm cov khoom. Feem ntau, txhua yam yuav tsum tau taug kev ntawm tib lub nrawm hauv lub computer thiab tsis muaj dab tsi tuaj yeem mus nrawm dua li CPU. Cov tswj tsheb npav khaws cov khoom txav ntawm qhov nrawm.
Thaum ntxov Macs siv 16-ntsis cov ntaub ntawv tsheb npav; Thawj Macintosh siv Motorola 68000 processor. Newer Macs siv tsheb npav 64-ntsis.
Type of Buses
Ib lub npav cov ntaub ntawv tuaj yeem ua haujlwm raws li lub npav sib txuas lossis lub npav sib txuas. Serial tsheb npav-zoo li USB thiab FireWire kev sib txuas-siv ib lub xaim rau ob qho tib si xa thiab tau txais cov ntaub ntawv ntawm cov khoom. Cov tsheb thauj mus los zoo li SCSI kev sib txuas-siv ntau cov xov hlau sib txuas ntawm cov khoom sib txuas. Cov tsheb npav no tuaj yeem yog sab hauv rau lub processor lossis sab nraud, txheeb ze rau cov khoom sib txuas tau txuas nrog.
