Signal Digital - tayada, isku haleynta, ammaanka

macluumaadka dunida casriga ah waxaa lagu soo koraya oo aad u degdeg ah, sidaas darteed waxaan u baahan tahay in ay isku dayaan in ay mar walba ilaa taariikhda la teknoolajiyada cusub. Tani waxay kuu ogolaaneysaa in aad ka fal inuu isbedel iyo hesho adeegyo tayo sareeya.

Waayo, ninka caadiga ah ee wadada nooca signal a digital ama analog - ugub ah uninteresting. Laakiin marka ay jirto su'aal ku saabsan farqiga u dhexeeya qaabab digital iyo analog ama calaamadaha, uu bilaabay in uu kor u su'aalo. Waa wax qarsoodi ah farsamooyinka la dhisay on mabaadi'da analog, si degdeg ah ama goor dambe, waxay dhammaan doontaa jiritaankeeda oo si buuxda u siin kelyaha ee kala iibsiga ee macluumaadka "tiradaasi".

Laakiin ilaa iyo haatan waxa uu ma iman, waqti ka waqti waxaa loo baahan yahay si loogu badalo signal analog si digital. Waxa kale oo aan caadi ahayn, marka waxaa lagama maarmaan ah in la sameeyo digital si ay diinta ka signal analog.

signal The analog ay core - taasi waa il xogta signal gaar ah, taas oo lagu tilmaami karo by gaar ah hawlaha joogtada ah marka la eego waqtiga. Taas macnaheedu waa in Ilodanimada oscillation u noqon kartaa qiimaha kasta oo saacididoono qaarkood.

signal Digital - durdur xogta signal gaar ah, taas oo lagu tilmaami karo by hawlaha Discrete gaar ah marka la eego waqtiga. Taasi waa, ay Ilodanimada qaadan kartaa oo keliya qiimaha a si wanaagsan u qeexan.

Waayo, signal ah analog lagu gartaa tiro badan oo ah faragalin kala duwan. signalka digital leeyahay feature a waxtar leh si ay shaandhayso ugu faragelinta ku iman kara. Taana waxaa lagu gaarayaa iyada oo awood u leh inuu ka soo kabsado dhammaan xogta asalka ah. Sidoo kale, signalka digital kala maqan macluumaadka ka eryis durdur data, halka analoogga dabeecad kala iibsiga adigoo qadar weyn oo load macluumaad semantic lahayn. In mid ka mid channel jirka gudbin karaan calaamadaha badan digital, halka mid ka mid ah analog oo kaliya.

signalka digital leeyahay dabeecad kale oo muhiim ah - waa uu ammaanka. Sayidka, signalka analog ku xiran yahay ku dhawaad saamayn kasta ama duulaanka ka deegaanka. Isla mar ahaantaana, waxa uu leeyahay awood u leh inay la dijital ah Windows XP by u xilsaarayo code gaar ah ka go'an ee la karsado. Tani waxay tiraa shiidaa wixii faragelin ah dadka ha this xaq u lahayn, in geeddi-socodka kala iibsiga data. Faa'iida kaliya ee "tiro" - taasi waa kakanaanta ee gudbinta fog. Laakiin dhibaatadan si fudud xalin by isticmaalka aaladaha gaar ah u isbedbeddelka hawlaha / demodulation.

kala guurka ah si ay signal a digital waa kan ugu welwelsan la isticmaala television. Waayo, dad badan, TV ahaa oo weli isha kaliya ee macluumaadka. At technology isku dhacsan ma aqbasho "tiradaasi". Sidaas awgeed waa lagama maarmaan in la isticmaalo signal digital qalab gaar ah -preobrazovatel.

Waxay kaa caawin karaan inaad badalo signal kasta digital galay analog ah la doonayo. Tani waxay iska ilaalisaa in kharashka dheeraadka ah ee iibka ah ee go'an TV cusub oo kuu ogolaanaya isticmaalka xogta digital tayada qalabka analog aad.