Isikhundla ulwazi DVD-ROM

Mhlawumbi ngoku akunakwenzeka ukuba umntu owayeza soze ephethe CD. Kutshanje, amajelo eendaba nzulu kwiNgxowa izikhundla zabo ngenxa yokwaziswa asebenzayo drives ngakumbi enobuchwepheshe ngokusekelwe memory oluqinileyo-karhulumente. Noko ke, okwangoku ukulahla ngokupheleleyo idiski kuyancomeka ngenkankulu. umthamo DVD kwanele ukugcina uninzi kweenkqubo kunye neefayili multimedia. Abavelisi zibonisa ukuba umsebenzisi angasebenzisa 4.7 GB. Enyanisweni, ngokuba DVD drive umthamo data ubuninzi 4,38 GB, leyo kunokucaciswa umahluko kwi indlela yokubala. Namhlanje siye sithethe malunga nobuchwepheshe Digital Ezahlukeneyo Disc kwaye ijongane bokuqonda yokubala umthamo eendaba.

Le ngxaki kunye neenkcazo

Le DVD elithi, ngokumangalisayo, ayinayo ekufundeni ocacile. Le iteknoloji iye iphuhliselwe ukungena endaweni CDs eqhelekileyo CD, amandla leyo ngoku beye besiba ayonelanga. Ekuqaleni DVD ufuzisela Digital Video Disc (Digital Video Disc). Noko ke, kamva kwacaca ukuba kunokwenzeka ukuba abhale bhanya nje kuphela, kodwa nezinye iifayile. Nantsi ke imbangi yokuba abanye baye baqalisa ukuba intsingiselo ethile elithi, okuthetha DVD Digital Ezahlukeneyo (Ezahlukeneyo) Disc. Lilonke, zombini ezi khowudi yasiwa kumbhalo zichanekile.

Ngokwandisa inani olukhoyo

Oku sele kuchaziwe ukuba DVD-Recordable ithabatha indawo CD, ekube umthamo ngokwaneleyo. Ukuze ufunde idatha digital kumphezulu, kuyimfuneko ukuba asebenzise laser umqadi obhityileyo. Izixhobo drive kule yunithi ezithile iyaphunyezwa, eliquka ibonakala element kunye nenkqubo zijolise. Umahluko omkhulu phakathi umqadi ukukhanya esetyenziselwa data ukufunda nokubhala, kukuba inonamathelwano, ngoko kukho kukho ziwuphose kakhulu ligxile. Oku kukuvumela zula ukuphelisa imiphumo nesenzeko diffraction kunye ukungenela amaza okukhanya. Ekuphuhliseni CD umgangatho ekhoyo ngexesha emitters semiconductor ezincinane abazange bakwazi ukuyila umqadi ube ngokwaneleyo elimxinwa, ngoko ke ububanzi yemizila kwisiseko disc metal ibe malunga 1.6 microns. Kamva, kwavela ilight-esikhupha nobunzima ziye, umqadi leyo ezingcakacileyo kangangokuba ububanzi ingoma wakwazi ukunciphisa ngesiqingatha. Ngenxa yoko, umthamo ulwazi lwe DVD-ROM yaba izihlandlo eziliqela ngaphezulu kwe parameter CD efanayo. Kwakhona ububanzi umkhondo, kwaba Kuyenzeka ukutshintsha i therebetween umgama, kwaye ubukhulu kwemingxuma.

"Cake" we kwi diski

Umthamo we-DVD-ROM ixhomekeke kuphela imilinganiso ikhankanywe apha ngentla kwaye uqwalaselo lwe laser umqadi. Ngesi- imidiya, leyo, enyanisweni, zidibene disks ezininzi kwimveliso omnye, lo gama kugcinwe kumlinganiselo eqhelekileyo. Ezo zobudlelane obuya multi-umaleko onokufaniswa isonka. Xa imveliso ayisetyenziselwanga yedwa, kodwa iindlela ezimbini, kodwa ke amalungiselelo ukuze umqadi laser ukufunda udlula ngokukhululekiyo kwawo Ngaphezulu. umthamo wabo wafika 8,54 GB. Ubuninzi umthamo i DVD-disc, ogama ubukhulu ayikho-12, 8 cm, ngu 5,32 GB. Ngokwemo, i drive usenokuba emitters ezimbini, nganye kuzo lujolise kubunzulu yayo (indawo). Kukho imifuziselo kunye umqadi enye, leyo elawula bombane zijolise. DVD umthamo Ulwazi ingaba ngakumbi xa esetyenziswa kwi ekuthiwa-isisombululo ngurhulumente-mbini. Ngaphandle, le CD rhoqo, kodwa funda / bhala kunokwenzeka ezivela macala omabini, leyo uninzi drives kufuneka ukuba isithuthi. DVD-amandla idiskhi loo ukulungisa uvela 9.4 GB (single umaleko mazwe) ukuya 17.08 (maleko ezine, ukurekhoda macala omabini). Noko ke, le "amaqebengwana" asingabo ngokubanzi ngenxa yeendleko eziphezulu kakhulu kwimveliso kunye nemfuneko gcinani kunene ukuba ndibathathe umkrwelo encinane kunokukhokelela kukungakwazi ukufunda idata kweemaleko izisekelo.

ulwazi nokugcina

Le RAM-based technology idiskhi teka ukufudumeza komhlaba kunye umqadi laser. osemqoka yabo uyakwazi ukwenza ifomathi eziwaziyo inkqubo ifayile ifolokhwe-32, uze ucime ngokukhetha iifayili. Ngokwemo, le idiski zibekwe neekhatriji ezizodwa, nto leyo eyandisa ukuthembeka kwabo. Enyanisweni, ukuba ususe i DVD-RAM lomzimba, oko unako ukusebenza ngayo kwi drive kummisela Multi. Le izisombululo noko ethembekileyo. Ulwazi umthamo DVD yale hlobo uvela 1.46 GB (single-maleko shape- olunye-, 8 cm) ukuya 9.4 GB (amabini). Le RAM gama lithetha ukuba Yeremiya kunokwenzeka ngokwasemzimbeni. Le ungayiqondiyo anokuguqulelwa ngokuthi "Random Access Inkumbulo". Eneneni, olu hlobo disc isetyenziselwa backup data kwaye phambi kokufika enye sasazo isisombululo enkulu. Ingakumbi xa bathi ubude zokugcina (iminyaka engama-30) kunye nenani lemijikelo ngaphezulu (ngaphezu kwe-100 lamawaka.). Abaphumeleli - ixabiso eliphezulu kakhulu kwaye kwasasazeka ephantsi.

i Video

Izigqibo ezilandelayo - i DVD-Video. Ezi disc ziyilelwe ukuba kurekhodwe umsinga multimedia. Obizwa ngokuba «DVD-1 ... 18". I zokuqala ezine - ukulungisa lincitshiswe ububanzi (8 cm ngokuchasene eqhelekileyo 12). ezakudala Izincomo DVD-5, ukusuka apho inokubuyiselwa kuthathwa 4.7 GB (single-kabini). Ngako oko, amandla iphezulu DVD kolu didi 17,08 GB (DVD-18, emacaleni aso omabini, maleko ezine). Ekubeni abadlali yokuzonwabisa elikhulu sebenzisa iibhloko ugxininisa elula ukunciphisa iindleko zokuvelisa, hayi zonke imifuziselo banako ukufunda isixa esikhulu akwazi. Ngaphandle - single-maleko kabini-kabini, sifuna nje flip disc kwi drive. Ububi yabo kukunqongophala indawo ilebhile, ngoko igama kubonisiweyo inxalenye transparent, ecaleni umngxuma engundoqo.

Bhala Kanye

Ukuvela drives abanezakhono zokuwenza ngokwabo kwaloo ushicilelo lwe data zedijithali disc ekhaya, ukuze wenze revolution ngokwenene kwicandelo yogcino kunye nethala lemiboniso oluninzi lwangoku. DVD + -R ekuqaleni ithengiswe ngaphandle irekhodi. Umnini ezikhethekileyo drive ungagcina kwi disc naluphi na ulwazi idijithali. isipili-blue Tint kummandla violet spectrum. DVD Isikhundla yale hlobo uvela 4.7 GB (umaleko ube mnye kwicala elinye) ukuya 17,08 Gb. Lo mqulu luxhomekeke, njengesiqhelo, nenani lamanqanaba kunye nezalathiso. Nakuba kunjalo, ngenxa efanelekileyo nkqubo ixabiso zezona lwimi zisetyenziswa zobudlelane obuya elula 4.7 GB. Ngaphambili, irekhodi inokwenziwa kuphela ngoncedo drives computer, kodwa ngoku eli thuba lokuba eninzi abadlali yokuzonwabisa ukuba igcinwe kwi usulelo TV drives. "-" Ingxaki wokuhambelana kunye «+» R ixesha elide wahlala kwixesha elidlulileyo kwaye kwinqaku akuthethi ukuxoxa.

yokubhala multiple phantsi

uhlobo disc yangaphambili siphaku icacile - abakwazi kwakhona irekhodi, ukucima i data. Ukusombulula le ngxaki ziye icetywayo kuyaphi IiCD ezahlukeneyo, ebizwa DVD + -RW. Bangakwazi zingasetyenziswa njenge drive disk eqhelekileyo. Le RW gama lithetha CD, ngamanye CD. DVD Umthamo kule klasi iyafana naleyo "esiqhelekileyo» R. Nangona kunjalo bilayer azifane eyandisiweyo ngenxa imfuneko ukuze sizuze ekhethekileyo drive, bakwazi ukusebenza loo adume ngazo. Ukongeza, ezi izisombululo CD ngoko kufuna ukuphathwa ngenyameko kuye, nokuntsonkotha loyilo wabo kuthetha ukuba ezi disc okunene ukuba behle amasuntswana nothuli. awukwazi ukuthenga A imikrwelo random phezu ukufunda ulwazi kweemaleko asezantsi. Ngoko ke, i "Classic" - it is a single-umaleko shape- enye-idiskhi. Umbala kumphezulu yahluka ukusuka amdaka phantse abamnyama. Inani ubhale imijikelo ngokusesikweni malunga namawaka ezimbalwa, kodwa neenkqubo disc enjalo, ungakwazi alobe ukuya amaxesha 50-100. Kwaye ke ngokuhamba kwexesha yokugcina ukuthembeka lifinyele. Ngoko ke, DVD-RW zilufanele zokugcina elifutshane elide kunye nezithuthi. Ukurekhoda unit kunokuba njengesiqhelo. Ngelo xesha usebenzisa indlela Windows nabo banako ukusebenza njenge eqhelekileyo drive (funda / bhala iifayile esicalanye). Noko ke, ngenxa yokuba i CD disc standard akavumi ukuphuhlisa isantya esiphezulu, ngokuqhelekileyo kufuneka ukulungisa amaxesha amane, ilingana no 5.5 MB.

ukurekhodwa feature

Ubuchule standard DVD uya kugqithiswa kancinane. Oku kwenziwa ngokusebenzisa ommandla lead-out. umsebenzi Overburn kufuneka sixhaswe kwisixhobo. Kokuba lwenziwe software ethandwayo uNero ngokuya ku- "Options - iipropati Expert". Asazi singacebisi usebenzisa lo msebenzi ngaphandle yimfuneko kakhulu, kuba kunokwenzeka ukuba ayamkele nokungakwazi ukufunda disc kwi drive, hayi ukusebenza Overburn.

Njengokuba umthamo kubalwa

Abanini abaninzi computer kudala waphawula ukuba CD akakwazi ukubhala isixa lolwazi, nto leyo iya kuboniswa ngumvelisi. Enyanisweni, akukho ukukopela apha. ukuqhuba nje abenzi ngenxa yezizathu zorhwebo bakholelwa ukuba 1 kB 1000 bytes, kodwa eneneni ngo-1024 (nkqo ezimbini ngomlinganiselo yeshumi). Ngenxa yokwanda kwenani ikhula kwi ukuqhubela phambili. Ngoko ke, umlinganiselo DVD-ROM ibekwe hayi ngaphezulu "ukunyaniseka" 4,38 GB.