Yuav ua li cas yog cov kis ntawm cov ntaub ntawv

Cov kev hloov ntawm cov ntaub ntawv yog ib tug ntawm lub ntsiab yam tseem ceeb ntawm lub hav zoov ntawm ib daim ntawv uas lub neej nyob rau lub ntiaj teb. Txawm tej yam yooj yim cov kab mob no thaum yug los muaj yooj yim instincts uas pab lawv ciaj sia. Cov ntaub ntawv hloov lwm lub tsev ntawm qhov chaw mus rau lub receiver kis nyob rau hauv ntau txoj kev. Cov no muaj xws ua li cas qhov txhia, xws li lub rooj sib hais, pom, kov, thiab ntau yam kev pab kiag li lawm hais txog telecommunications.

Cov kis tau tus mob ntawm cov ntaub ntawv yuav siv sij hawm qhov chaw nyob rau hauv daim ntawv ntawm cov lus siv cov kev sib txuas lus channel. Baseline cov ntaub ntawv yog kho mus rau hauv ib lub teeb liab uas yog kis tau mus rau lub ADDRESSEE. Txais yog ua los ntawm lub receiver thiab hloov dua siab tshiab rau hauv ntaub ntawv. Piv txwv li, cov huab cua lus no yog kis tau mus rau tus neeg (tuav) ntawm meteorological chaw ntawm ib tug kev sib txuas lus channel (TV).

Qhov zoo tshaj ntawm cov ntaub ntawv nyob rau hauv lub sijhawm nyob rau hauv uas lawv hloov. Piv txwv li, ib tug phem duab ntawm qhov screen yog tau kiag li mislead cov neeg tau kev pab. Lub efficiency ntawm kev sib txuas lus channel kuj muaj feem xyuam rau cov kev ceev thiab xov tooj ntawm cov ntsiab muab kev koom tes nyob rau ntawd. Cov feem ntau cov tawm cov piv txwv ntawm qhov no yuav muab suav hais tias ib tug "lo lus ntawm lub qhov ncauj": tus lawm cov ntaub ntawv nce mus txog tus neeg, ntau dua qhov lub sij hawm ntawm tau txais tsis muaj tseeb cov lus qhia.

Nyob rau hauv hnub no lub ntiaj teb no ntau thiab ntau nrov li ib qhov chaw ntawm cov ntaub ntawv sib sau ua ke nyob hauv internet. Ib tug ntawm lub ntsiab yam tseem ceeb ntawm nws ceev ceev txoj kev loj hlob raws li yog lub tau ntawm muab tej ntaub ntawv zoo nyob qhov twg hauv lub ntiaj chaw. Tab sis cov kev hloov ntawm cov ntaub ntawv tshaj ntev ncua kev feem ntau kis tau nrog ib co poob los yog distortion. Yog li ntawd, kev sib txuas lus channel - lub ntsiab zoo tshaj rau qhov zoo tshaj ntawm tus tau txais cov ntaub ntawv.

Cov kis tau tus mob ntawm cov ntaub ntawv ntawm lub computer tes hauj lwm nyob rau hauv thawj lub sij hawm twb nqa tawm siv ib tug landline xov tooj. Xws li ib tug txoj kev muaj ib tug xov tooj ntawm disadvantages. Kis ntawm cov ntaub ntawv nyob rau ntawm tsis zoo tiv thaiv channel, thiab cov kev ceev thiab kev cia siab ntawm kev twb kev txuas yog neeg pluag. Lub teeb liab yog pheej raug cov ua, i.e., hauv xov tooj txoj kab los ntawm lub qhov nws tau ua nyob rau hauv lub ntsiab center, tom qab dua coded thiab twb teem tawm nyob rau hauv ib tug tshwj xeeb ntaus ntawv - ib tug modem, qhov uas nws rov recoded thiab xwb ces zoo nkaus li nyob rau hauv lub monitor screen.

Fiber optic cov ntaub ntawv kis tau tus mob system lawm txoj kev hloov mus rau ib tug sib txawv kiag li lawm. Rau hnub tim, fiber optic mus muab lub siab tshaj plaws ceev thiab zoo tshaj ntawm kev sib txuas lus. Lub teeb liab yog kis tau los ntawm photons, uas tsis emit ib tug electromagnetic teb, thiab chaw pib rau xws li ib tug channel yuav tsis tau kev cob cog rua ntawm sab nraum, uas saib kuas ib tug high degree ntawm kev ruaj ntseg. Tus nqi thiab kis tau tus mob zoo yog tsis cuam tshuam los ntawm tus ntoo khaub lig seem thiab tus neeg xyuas pib kuj, cov lo lus uas peb tau txais cov ntaub ntawv yog nyob rau hauv daim ntawv nyob rau hauv uas nws twb raug xa, cov ntaub ntawv sib pauv yuav siv sij hawm qhov chaw yuav luag instantaneously.

Lub ceev ceev txoj kev loj hlob ntawm lub CPC yuav tsum tau kom cov kev ceev thiab mobile Internet. Los ntawm qeeb thiab kim WAP-kev twb kev txuas mus rau high-speed 4 G. Progress tsis sawv tseem, thiab yog tsis far off lub hnub thaum lub wired Internet yog obsessed nrog mobile. Cov tiam tom ntej yuav tsum puzzled zoo rau installer, cia li raws li peb tam sim no tab tom nrhiav nyob rau ntawm qhov taag xov tooj, uas yog maj hloov los ntawm wireless.