Capacity info DVD-ROM

Zai yiwu yanzu ba shi yiwuwa a hadu da wani mutum wanda ba zai taba rike wani CD. Kwanan nan, kafofin watsa labarai tsanani mika wuya da matsayi saboda da aiki gabatarwar mafi technologically m tafiyarwa dangane da m-jihar memory. Duk da haka, ba tukuna cikakken watsi da fayafai wuya bu mai kyau. DVD iya aiki ne ya isa ya ajiye mafi yawan shirye-shiryen da kuma multimedia fayiloli. Masana'antun nuna cewa mai amfani iya amfani da 4.7 GB. A gaskiya ma, domin DVD drive iyakar data damar 4,38 GB, wanda za a iya bayyana ta da bambanci a cikin hanyar lissafi. Yau muna magana game da Digital m Disc fasaha da kuma magance da nuances na kirga ƙara da kafofin watsa labarai.

Matsalar da ma'anar

A lokaci DVD, abin mamaki, ba shi da wani unambiguous dikodi mai. Wannan fasaha da aka ɓullo da su maye gurbin al'ada CDs CD, da damar da aka ƙara zama kasa. Da farko DVD tsaye ga Digital Video Disc (Digital Video Disc). Duk da haka, daga baya ya bayyana cewa, yana yiwuwa ya rubũta ba kawai fina-finai, amma kuma sauran fayiloli. Wannan shi ne dalilin da cewa wasu sun fara sa wasu ma'anar da lokaci, ma'ana DVD Digital m (m) Disc. Overall, biyu ne daidai Mabudi.

By kara adadin samuwa

An riga an nuna cewa, DVD-fayafai sun maye gurbin da CD, wanda aka bai isa ba iya aiki. Don karanta rubuce dijital data ga surface, shi wajibi ne don amfani mai bakin ciki Laser katako. A drive na'ura wannan takamaiman naúra tana aiwatar, kunsha na haskakawa kashi da kuma mayar da hankali tsarin. Babban bambancin dake tsakanin hasken katako amfani ga karatu da rubuta bayanai, shi ne cewa shi ne mai jiwuwa, to, akwai sosai tsallaka mayar da hankali. Wannan damar kusan kawar da sakamakon diffraction mamaki da kuma kutse na haske tãguwar ruwa. A tasowa da misali CD samuwa a lokacin da dada semiconductor emitters kasance bã su iya haifar da wani isasshe kunkuntar katako, don haka da nisa daga cikin waƙoƙi a kan wani Disc karfe tushe ne game da 1.6 microns. Daga bisani, mafi nagartaccen haske-emitting diodes da aka ɓullo da, da katako, wadda take da bakin ciki cewa da nisa daga cikin hanya ya iya rage da rabi. Saboda haka, bayanai damar DVD-ROM ya sau da yawa ya fi yadda irin wannan siga CD. Har ila yau da hanya nisa, shi yiwuwa a canza nesa therebetween, da kuma girman da kwazazzabai.

"Cake" na woje

Da damar a DVD-ROM ne m da ba kawai da muka ambata a sama girma da kuma sanyi na Laser katako. Created irin kafofin watsa labaru, wanda, a gaskiya, a hade mahara woje a guda samfurin, yayin da rike da misali girma. Irin wannan Multi-Layer bayar da taimakon da za a iya kwatanta ta da wani gurasa. A samar da ba a amfani kadai, amma hanyoyi biyu, amma shirya don haka da cewa karatu Laser katako wuce da yardar kaina ta hanyar da translucent saman surface. Su girma kai 8,54 GB. Matsakaicin damar da DVD Disc-, wanda diamita ba 12, da kuma 8 cm, shi ne 5.32 GB. Fasali, da drive iya samun biyu emitters, kowanne daga abin da mayar da hankali a kan ta zurfin (surface). Akwai model tare da guda katako, wanda kulawa da mayar da hankali lantarki. Bayani DVD iya aiki zai iya zama ma fi girma a lokacin da amfani da, a cikin abin da ake kira biyu-jihar bayani. Azahiri, shi ne na yau da kullum CD, amma karanta / rubuta shi ne zai yiwu daga bangarorin biyu, wanda a mafi yawan tafiyarwa ake bukata don kunna abin hawa. DVD-iya aiki Disc irin canji ne daga 9.4 GB (guda Layer dangantakar) to 17.08 (hudu yadudduka, rikodin a garesu). Duk da haka, wadannan "cakes" ba yadu amfani saboda mafi girma kudin na samarwa da kuma bukatar hankali sosai ya bi da su kamar yadda 'yar alamar karce iya kai wa ga rashin iyawa don karanta data daga muhimmi yadudduka.

rikewa bayanai

A RAM-tushen Disc fasahar ta'allaka dumama surface da Laser katako. Su alama ne da ikon yin Tsarin a saba fayil tsarin mai-32, da kuma selectively share fayiloli. Fasali, wadannan fayafai aka sanya shi a cikin na musamman harsashi, wanda ƙara musu AMINCI. Rubuce, idan ka cire DVD-RAM na jiki, shi zai iya aiki tare da shi a kan wani drive kaddamarda kamar yadda Multi. Wannan shi ne wani fairly m mafita. Bayani damar DVD na irin wannan ne daga 1,46 GB (single-gefe guda-Layer, 8 cm) zuwa 9.4 GB (hadin). A lokaci RAM yana nufin cewa rewriting ne a jiki zai yiwu. A acronym za a iya fassara a matsayin "Random Access Memory". A gaskiya, irin wannan Disc da ake amfani da data madadin kuma kafin zuwan madadin kafofin watsa labarai ne mai girma bayani. Musamman idan ikirarin duration na ajiya (game da 30 years) da kuma yawan overwrite hawan keke (fiye da dubu 100.). Hasara - mun gwada da babban farashi da kuma low baza.

da Video

Wadannan yanke shawara - shi ne DVD-Video. Wadannan fayafai an tsara su don yin rikodin multimedia rafi. Ake magana a kai a matsayin «DVD-1 ... 18". A farko hudu - gyara an rage a diamita (8 cm da daidaitattun 12). Dauke litattafansu DVD-5, daga abin da za a iya daukarsa 4.7 GB (single-gefe). Haka kuma, matsakaicin damar da DVD a cikin wannan category ne 17,08 GB (DVD-18, bangarorin biyu, hudu yadudduka). Tun da m video 'yan wasa amfani da sauki mayar da hankali tubalan don rage kudin na samarwa, ba duk model ne iya karanta wani babban adadin fayafai. Togiya - single-Layer biyu mai gefe, ga wanda kawai bukatar jefa cikin Disc a drive. Su hasara ne da rashin sarari ga lakabin, don haka sunan da aka nuna a kan m kashi, kusa da tsakiyar rami.

rubuta zarar

Ana zargin tafiyarwa iya yin rikodi na dijital bayanai zuwa Disc a gida, don yin wani real juyin juya halin a fagen madadin kuma mafi halin yanzu film library. DVD + -R asali sayar ba tare da rikodin. A owner of musamman drive iya ajiye a kan Disc wani bayani digitized. Launi madubi-blue tint ga Violet yankin na bakan. Capacity DVD na irin wannan ne daga 4.7 GB (guda Layer a daya gefen) zuwa 17,08 Gb. The girma dogara, kamar yadda ya saba, da yawan yadudduka da kuma kwatance. Duk da haka, saboda dace farashin manufofin mafi yadu amfani da sauki gajiyar da 4.7 GB. A baya can, rikodin za a iya yi kawai da taimakon kwamfuta tafiyarwa, amma yanzu wannan damar da yawa video 'yan wasan da za a iya adana a kan wani TV watsa tafiyarwa. "-" The matsalar da karfinsu da kuma «+» R na dogon lokaci kasance a baya da kuma a cikin labarin ba tattauna.

mahara rubuce-rubuce saukar da

baya irin Disc aibi ne bayyananne - ba za su iya sake yin rikodin, share data. Don warware wannan matsala da aka samarwa ne fundamentally daban-daban fayafai, da ake kira DVD + -RW. Su za a iya amfani da kusan kamar wata al'ada faifai drive. A lokaci RW nufin Rewritable, Ina nufin rewritable. Capacity DVD na wannan aji ne kamar cewa da "talakawa» R. Duk da haka bilayer wuya mika saboda bukatar ya saya musamman drive, iya aiki tare da wannan woje. Bugu da kari, da rewritable mafita da kuma buƙaci haka m handling zuwa gare shi, kuma haduwar da zane yana nufin cewa wadannan fayafai zahiri da su busa kashe da ake wãtsarwa. A bazuwar scratches a kan surface ba za su iya karanta bayanai daga cikin ƙananan yadudduka. Saboda haka, "classic" - shi ne guda-Layer guda-gefe Disc. A surface launi dabam daga m zuwa kusan baki. Yawan rubuta hawan keke a hukumance ne game da 'yan dubu, amma a yi irin wannan Disc, za ka iya rikodin har zuwa 50-100 sau. Kuma a sa'an nan a kan lokaci ajiya AMINCI an rage. Saboda haka, DVD-RW su dace da gajere ajiya da kuma sufuri. Rikodi naúrar iya zama kamar yadda ya saba. A daidai wannan lokaci ta amfani da Windows inji ma iya aiki kamar wata al'ada drive (karanta / rubuta sabani files). Duk da haka, saboda gaskiyar cewa misali rewritable Disc ba da damar wajen samar da babban gudun, yawanci suna shirya domin sau hudu, daidai 5.5 MB.

rikodi alama

A misali DVD damar iya dan kadan wuce. Wannan shi ne cimma ta hanyar amfani da gubar-fita zone. Overburn aiki dole ne goyan bayan da na'urar. Yana za a iya kunna a wani m Nero software ta zuwa "Zabuka - Gwani Properties". Ba mu bayar da shawarar yin amfani da wannan alama ba tare da matsananci larura, tun yana yiwuwa a fuskanci rashin karanta Disc a drive, ba aiki tare da Overburn.

Kamar yadda lasafta girma

Mutane da yawa kwamfuta masu yi dogon lura cewa, a CD ba zai iya rikodin adadin bayanai, wanda aka nuna ta manufacturer. A gaskiya, babu magudi a nan. Just fitar da masana'antun for marketing dalilai yi imani da cewa 1 KB 1000 bytes, amma a gaskiya a 1024 (kafa biyu a cikin goma digiri). Tare da karuwa a yawan da aka girma cikin ci gaban. Saboda haka, a misali DVD-ROM aka sanya wani karin "gaskiya" 4,38 GB.