Thaum lub dawn ntawm lub computer technology, ib qho teeb meem loj ntawm cov neeg siv tau ua rau cov neeg tsis muaj zog - ntau cov chaw nres nkoj heterogeneous tau them rau kev siv lub tshuab hluav taws xob, feem ntau uas yog cumbersome thiab tsis tshua muaj kev cia siab. Txoj kev daws teebmeem yog "kev caij tsheb npav" lossis USB rau luv luv. Rau thawj lub sij hawm qhov chaw nres nkoj tshiab tau nthuav tawm rau cov pej xeem nyob rau hauv lub deb 1996. Nyob rau hauv 2001, motherboards thiab lwm cov khoom siv ntawm lub USB 2.0 standard tau muaj rau buyers, thiab nyob rau hauv 2010, USB 3.0 nyob. Yog li cas qhov txawv ntawm cov technologies thiab yog vim li cas ho tseem nyob hauv kev thov?
Txawv txawv ntawm cov qauv ntawm USB 2.0 thiab 3.0
Ua ntej tshaj, nws yog tsim nyog sau cia tias tag nrho cov USB ports yog tshaj sib. Qhov no txhais tau hais tias txuas ib lub cuab yeej qeeb rau lub vas nthiv chaw nres nkoj thiab lwm txoj kev yuav ua tau, tab sis qhov ceev ntawm cov ntaub ntawv txauv yuav tsawg.
"Txheeb xyuas" tus qauv txuas yuav pom - nyob rau hauv USB 2.0, sab hauv sab nrauv yog xim dawb, thiab hauv USB 3.0 - hauv xiav.
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Tsis tas li, cov cables tshiab tsis yog plaub, tab sis yim xov hlau, uas ua rau lawv thicker thiab tsis yoog. Nyob rau hauv ib tes, qhov no ua rau kom qhov kev ua haujlwm ntawm cov khoom siv, pabcuam cov ntaub ntawv tsis sib txuas, rau lwm qhov - tsub tus nqi ntawm cov cable. Feem ntau, USB 2.0 cables yog 1.5-2 zaus tshaj li lawv cov "kwvtij" sai. Muaj qhov sib txawv ntawm qhov loj thiab cov qauv ntawm cov qauv zoo sib xws ntawm cov khoom sib txuas. Yog li, USB 2.0 muab faib ua:
- hom A (qub) - 4 × 12 hli;
- hom B (zoo li qub) - 7 × 8 hli;
- hom A (Mini) - 3 × 7 hli, trapezoid nrog npawv fab;
- Hom B (Mini) - 3 × 7 hli, trapezoidal nrog cov ces kaum;
- hom A (Micro) - 2 × 7 hli, rectangular;
- Hom B (Micro) - 2 × 7 hli, qaub ncaug nrog pobzeb.
Hauv computer peripherals, hom USB hom A ntau yog siv, hauv mobile gadgets - Hom B Mini thiab Micro. USB 3.0 kev cais tawm kuj nyuab:
- hom A (qub) - 4 × 12 hli;
- hom B (ib txwm) - 7 × 10 hli, txoj zoo;
- Hom B (Mini) - 3 × 7 hli, trapezoidal nrog cov ces kaum;
- Hom B (Micro) - 2 × 12 hli, qaub ncaug nrog qhov sib npaug ntawm sab nrauv thiab nqis siab tshaj;
- Hom C - 2.5 × 8 hli, qaub ncaug nrog cov npoo sib npaug.
Hom A yeej tseem nyob hauv cov computers, tab sis Hom C yog tau txais ntau dua thiab ntau qhov chaw txhua hnub. Tus adapter rau cov qauv no tau muab tso rau hauv daim duab.
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Cov Ntaub Ntawv: Cov ntaub ntawv yooj yim txog cov peev xwm ntawm cov chaw nres nkoj ntawm qib thib ob thiab peb tiam
| Qhov Ntsuas | USB 2.0 | USB 3.0 |
| Cov ntaub ntawv hloov siab tshaj plaws | 480 Mbps | 5 Gbps |
| Cov ntaub ntawv teev tseeb | mus txog 280 Mbps | mus txog 4.5 Gbit / s |
| Max tam sim no | 500 mA | 900 mA |
| Versions ntawm qhov rais uas pab txhawb tus qauv | Kuv, 2000, XP, Vista, 7, 8, 8.1, 10 | Vista, 7, 8, 8.1, 10 |
Yog li ntawd, nws yog ntxov dhau los sau ntawv tawm USB 2.0 ntawm accounts - tus qauv no yog siv los txuas cov keyboard, mouse, printers, scanners thiab lwm yam khoom siv sab nraud, siv hauv mobile gadgets. Tab sis rau cov drives thiab drives lwm, thaum nyeem thiab sau speeds yog thawj, USB 3.0 yog zoo dua qub. Nws tseem tso cai rau koj mus txuas rau ntau lub nruab rau hauv ib lub hub thiab roj teeb kom sai zog vim muaj zog dua tam sim no.
