Qhov sib txawv tseem ceeb ntawm synchronous thiab asynchronous kis tau tus mob yog tias synchronous kis tau tus mob siv synchronized moos xa cov ntaub ntawv thaum asynchronous kis tau tus mob ndlwg tswj es tsis txhob siv lub synchronized moos xa cov ntaub ntawv.
Cov ntaub ntawv xa tawm yog txheej txheem xa cov ntaub ntawv los ntawm lub tshuab xa mus rau tus txais. Muaj ob hom kev sib kis cov ntaub ntawv hu ua Parallel Transmission thiab Serial Transmission. Serial kis tau tus mob xa ib me ntsis ntawm ib lub sij hawm, sequentially hla kev sib txuas lus channel. Parallel Transmission xa ntau yam khoom hla ntau qhov sib npaug ntawm tib lub sijhawm. Synchronous thiab asynchronous kis tau tus mob yog ob hom serial kis.
Dab tsi yog Synchronous Transmission?
Nyob rau hauv serial kis tau tus mob, muaj ib tug channel ntawm tus sender thiab receiver thiab cov khoom nyob rau hauv lub xa khoom rau kis mus rau ib tug tom qab lwm yam sequentially. Serial Transmission ntxiv faib ua synchronous thiab asynchronous kis.
Daim duab 01: Kev faib cov ntaub ntawv sib kis
Nyob rau hauv qhov kev sib kis no, lub sijhawm xa xov thiab lub moos txais yog nyob rau hauv synchronization, yog li ntawd, lawv khiav ntawm tib tus nqi. Nws kis thaiv los ntawm thaiv los yog thav duab los ntawm thav duab ntawm ib zaug nyob rau hauv lub sij hawm ruaj khov. Tsis tas li ntawd, nws tsis muaj nyiaj siv ua haujlwm nrog ntxiv header thiab footer khoom. Nyob rau hauv luv luv, synchronous kis tau tus mob yog npaum, txhim khu kev qha thiab tso cai rau ib tug loj npaum li cas ntawm cov ntaub ntawv xa mus.
Dab tsi yog Asynchronous Transmission?
Asynchronous Transmission, tseem hu ua pib / nres kis tau tus mob, xa cov ntaub ntawv los ntawm tus xa mus rau tus txais siv txoj kev tswj kev ntws. Nws tsis siv lub moos los synchronize cov ntaub ntawv ntawm qhov chaw thiab qhov chaw.
Kev xa tawm no xa ib tus cim lossis 8 khoom ib zaug. Ua ntej kis txhua tus cim nws xa cov pib me ntsis. Tom qab xa tus cim nws xa qhov nres me ntsis. Nrog cov cim me me thiab pib thiab nres cov khoom, tag nrho cov khoom hauv 10 khoom. Hauv kev luv luv, nws yog txoj kev sib kis tau yooj yim, nrawm thiab raug nqi.
Qhov txawv ntawm Synchronous thiab Asynchronous Transmission yog dab tsi?
Synchronous vs Asynchronous Transmission |
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| Synchronous Transmission yog ib txoj kev sib kis uas siv cov moos synchronized kom ntseeg tau tias tus neeg xa khoom thiab tus txais tau synchronized xa cov ntaub ntawv. | Asynchronous Transmission yog ib txoj kev sib kis uas xa cov ntaub ntawv siv kev tswj xyuas kom xa cov ntaub ntawv ntawm qhov chaw thiab qhov chaw. |
| Efficiency | |
| Ntau dua | Tsis muaj txiaj ntsig |
| Txoj kev xa cov ntaub ntawv | |
| Xa cov block lossis thav ntawv ntawm cov ntaub ntawv ib zaug | Xa ib byte lossis cim ib zaug |
| Tus nqi | |
| sib piv, siab | Tus nqi qis |
| Lub Sijhawm Sijhawm | |
| Siv lub sijhawm ncua sijhawm | Siv lub sijhawm tsis txaus ntseeg |
| Examples | |
| Qee yam piv txwv ntawm kev sib txuas lus sib txuas yog chav sib tham, kev sib tham hauv video, sib tham hauv xov tooj, thiab lwm yam. | Emails, TV, thiab xov tooj cua yog ob peb yam piv txwv rau kev sib kis asynchronous. |
Summary – Synchronous vs Asynchronous Transmission
Feem ntau, cov ntaub ntawv ntau dhau ntawm ib chav tsev nyob rau hauv synchronous kis tau tus mob dua li hauv asynchronous kis. Qhov sib txawv ntawm synchronous thiab asynchronous kis tau tus mob yog tias synchronous kis tau tus mob siv synchronized moos xa cov ntaub ntawv thaum asynchronous kis tau tus mob siv khiav tswj es tsis txhob siv lub synchronized moos xa cov ntaub ntawv. Zuag qhia tag nrho, synchronous kis tau tus mob yog txhim khu kev qha thiab npaum li asynchronous kis tau tus mob.
