Digital data are stored on optical media, such as DVDs. Although it is the same size as a CD, it has more storage space. While some DVDs are structured exclusively for movie playback, others could contain various forms of data, including computer files and software programs. There are three main types of DVDs. DVD-ROM, DVD-R, DVD-RW.
What is DVD-ROM?
DVD-ROM stands for Digital Versatile Disk-Read Only Memory. A read-only DVD is used to store the files permanently which cannot be changed, write-over, or erased. We can use DVD-ROM for the allotment of large applications which increase the size of a CD-ROM disc. The DVD-ROM was introduced by a group of ten international companies in 1996 developing DVD and HD-DVD formats for media, software, and hardware.
Through DVD-RAM and DVD-ROM drives, we can read easily in computers, but typically not in DVD drives connect with the TVs and home theater systems. We can store around 4.38 GB of data in DVD-ROM, but CD-ROM only stores 650 MB of data. A typical DVD-ROM can hold up to 17 GB/s of data if both sides of the disc are writable.
Characteristics of DVD-ROM
- The discs which are prerecorded using molding machines that physically stamp data onto the DVD. A such disc is a form of DVD-ROM because data can only in the read form and not written or erased. Some examples of rewritable DVDs are DVD-RW, DVD+RW, and DVD-RAM.
- Capacity: 4.7 GB (single-sided, single-layer – common) 8.5 GB (single-sided, double-layer) 9.4 GB (double-sided, single-layer) 17.08 GB (double-sided, double-layer).
- DVD-ROM basically are of two types. one is blank and other contains data. Each disc is 0.6 mm thick, and are combined together to form a DVD disc. The process of combining the two-disc together must be done carefully to make the disc as flat as possible to avoid ‘disc-tilt’.
- DVD-ROM can be recordable and rewritable both. Recordable DVD discs supporting dual-layer technology are backward-compatible with some hardware developed before the recordable medium.
- If we compare DVD-ROM to CD-ROM, has the same diameter is 5 inch and 1.2 mm thickness but a DVD-ROM uses a shorter wavelength laser with tighter compacted pits, the disc capacity increased. The minimum size of DVD-ROM stores approximately 7 times more data than CD-ROM.
Advantages of DVD-ROM
- Sharing Data and Files: the one who is not in the local network then we have so many several ways to transfer the files. A DVD-ROM can be used to transfer the files to anyone. Because DVDs give us more space than a CD-ROM disc.
- Restore/Back-up: A DVD provides a large storage where we can back up the important information and applications. Any computer user knows the importance of backup who has suffered. We can save the entire image using the software e.g., Norton’s Ghost to back up the whole drive.
- Affordable cost per gigabyte: If we talk about the cost of DVDs per gigabyte then DVDs have an advantage, we can buy the set of blank DVDs from anywhere. These are the most significant savings as compared to flash drives, etc.
Disadvantages of DVD-ROM
- Rewriting: DVD-ROM is a poor choice when you are storing data for an ongoing project that you’ll need to change on a regular basis. DVD is good to use when we don’t need to change the data on a regular basis.
- Compatibility issue: We can face issues with some programs with the drive since DVD-ROM is a relatively new technology for example, Real Jukebox, some music management software program, may not work with some drives.
- Resistless: DVDs are vulnerable to scratching, breaking, and wrapping when stored improperly. Damage to your DVD can mean partial or even total data loss.
- Expensive: It is more expensive than DVD-RAM and many other DVD and CD disks.
DVD ROM – FAQs
1. How much data can a DVD-ROM store?
Disks with capacities ranging from 4.7GB to 17GB and access rates ranging from 600 KBps to 1.3 MBps are supported by the DVD-ROM specification. About seven times as much data as a CD-ROM may be stored on the smallest DVD-ROM.
2. What is a DVD-ROM used for?
For distribution of huge applications that increase the size of a CD-ROM disc, we can use DVD-ROM. Both recording and rewriting are possible on DVD-ROM. A DVD-ROM can be used to transfer the files or software to anyone.
3. What is the difference between CD-ROM and DVD-ROM?
It has the same functionality as a CD-ROM but a bigger storage space. About 4.38 GB of data are stored on a DVD-ROM. 650 MB of data are typically stored on a CD-ROM. A DVD-ROM shares the same 5-inch diameter and 1.2 millimeter (mm) thickness as a CD-ROM.
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Takwimu za dijiti huhifadhiwa kwenye vyombo vya habari vya macho, kama vile DVD. Ingawa ina ukubwa kama wa CD, ina nafasi zaidi ya kuhifadhi. DVD fulani zimetengenezwa kwa ajili ya kutazama sinema tu, lakini nyingine zinaweza kuwa na aina mbalimbali za habari, kutia ndani faili za kompyuta na programu. Kuna aina kuu tatu za DVD. DVD-ROM, DVD-R, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, DVD-RW, V-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R-R DVD-ROM ni nini? DVD-ROM ni kifupi cha Digital Versatile Disk-Read Only Memory. DVD ya kusoma tu hutumiwa kuhifadhi faili kwa kudumu ambazo haziwezi kubadilishwa, kuandikwa, au kufuta. DVD-ROM inaweza kutumika kwa ajili ya matumizi makubwa ambayo kuongeza ukubwa wa CD-ROM. DVD-ROM ilianzishwa na kundi la makampuni kumi ya kimataifa katika 1996 kuendeleza DVD na HD-DVD muundo kwa ajili ya vyombo vya habari, programu, na vifaa. DVD-ROMs na DVD-ROMs ni vifaa vya kuhifadhi video na video, lakini kwa kawaida, DVD-ROMs ni vifaa vya kuhifadhi video na video. DVD-ROM inaweza kuhifadhi data ya karibu 4.38 GB, lakini CD-ROM inaweza kuhifadhi data ya 650 MB tu. DVD-ROM inaweza kuhifadhi hadi 17 GB ya data ikiwa pande zote mbili za diski zinaweza kuandikwa. DVD-ROM ni diski ambayo ni pre-rekodi kwa kutumia mashine molding kwamba kimwili stampu data juu ya DVD. DVD ni aina ya DVD-ROM, kwa sababu data inaweza tu katika fomu kusoma na si kuandika au kufuta. Baadhi ya mifano ya DVD rewritable ni DVD-RW, DVD + RW, na DVD-RAM. - Uwezo: 4.7 GB (upande mmoja, safu moja <unk> kawaida) 8.5 GB (upande mmoja, safu mbili) 9.4 GB (upande mbili, safu moja) 17.08 GB (upande mbili, safu mbili). DVD-ROM ni ya aina mbili. moja ni tupu na nyingine ina data. Kila diski ina unene wa 0.6mm, na huunganishwa pamoja ili kuunda diski ya DVD. Mchakato wa kuchanganya diski mbili pamoja lazima kufanyika kwa uangalifu ili kufanya diski kama gorofa iwezekanavyo ili kuepuka <unk>diski-tilt<unk>. - DVD-ROM inaweza kuwa kurekodi na rewritable wote. DVD disks kurekodi kusaidia teknolojia ya tabaka mbili ni nyuma-kuendana na baadhi ya vifaa maendeleo kabla ya rekodi kati. CD-ROM ni DVD-ROM yenye kipenyo cha inchi 5 na unene wa mm 1.2 lakini ina laser ya urefu wa mawimbi mafupi na mashimo ya compacted. DVD-ROM ni kubwa sana na inaweza kuhifadhi data mara saba zaidi ya CD-ROM. DVD-ROM - Kushiriki Data na Files: Mtu ambaye si katika mtandao wa ndani basi tuna njia nyingi kadhaa za kuhamisha faili. DVD-ROM inaweza kutumika kuhamisha faili kwa mtu yeyote. DVD ina nafasi kubwa zaidi kuliko CD-ROM. - Kurudisha-up: DVD hutoa kuhifadhi kubwa ambapo tunaweza nyuma ya habari muhimu na maombi. Mtumiaji yeyote wa kompyuta anajua umuhimu wa chombo cha kuhifadhi ambacho kimeteseka. Tunaweza kuokoa picha nzima kwa kutumia programu kwa mfano, Norton's Ghost kuhifadhi gari nzima. Kwa sababu ya gharama ya DVD kwa gigabyte, DVD inaweza kuwa na faida kubwa kwa watumiaji wa wavuti. Hizi ni akiba kubwa zaidi ikilinganishwa na flash drives, nk. Hasara ya DVD-ROM - Rewriting: DVD-ROM ni chaguo duni wakati wewe ni kuhifadhi data kwa ajili ya mradi unaoendelea kwamba unahitaji kubadilisha mara kwa mara. DVD ni nzuri kwa ajili ya matumizi wakati hatuna haja ya kubadilisha data juu ya msingi wa mara kwa mara. "Kuna uwezekano wa kuwa na matatizo na baadhi ya programu na gari tangu DVD-ROM ni teknolojia mpya kwa mfano, ""Real Jukebox,"" baadhi ya programu ya usimamizi wa muziki, inaweza kufanya kazi na baadhi ya gari." - Resistless: DVD ni dhaifu kwa scratching, kuvunja, na wrapping wakati kuhifadhiwa vibaya. Uharibifu wa DVD yako inaweza kumaanisha hasara ya sehemu au hata jumla ya data. - Ghali: Ni ghali zaidi kuliko DVD-RAM na diski nyingine nyingi za DVD na CD. DVD ROM <br > DVD ya kawaida DVD-ROM inaweza kuhifadhi habari ngapi? Diski zenye uwezo wa 4.7GB hadi 17GB na viwango vya ufikiaji vinavyoanzia 600kbps hadi 1.3mbps zinasaidiwa na vipimo vya DVD-ROM. Takriban mara saba zaidi ya data ya CD-ROM inaweza kuhifadhiwa kwenye DVD-ROM ndogo zaidi. 2. Uwezekano wa kupata DVD-ROM hutumiwa kwa kusudi gani? Kwa ajili ya usambazaji wa maombi kubwa ambayo kuongeza ukubwa wa CD-ROM diski, tunaweza kutumia DVD-ROM. Rekodi na kuandika upya kunaweza kufanywa kwenye DVD-ROM. DVD-ROM inaweza kutumika kuhamisha faili au programu kwa mtu yeyote. 3. Uwe na mtazamo wa kweli Ni nini tofauti kati ya CD-ROM na DVD-ROM? Ina utendaji sawa na CD-ROM lakini nafasi kubwa ya kuhifadhi. Kwa mfano, data ya GB 4.38 imehifadhiwa kwenye DVD-ROM. Kwa mfano, data ya MB 650 imehifadhiwa kwenye CD-ROM. DVD-ROM ina kipenyo cha inchi 5 na unene wa milimita 1.2 kama CD-ROM. Kushiriki mawazo yako katika maoni Tafadhali kuingia kwa maoni...