Although the storage capacity of a CD-ROM is significant, many programs and games begin to take dimensions becoming larger; there have already appeared encyclopedias or programs that need 4-5 CDs. The problem is solved by the appearance of the DVD -ROM, the next step after CD. The DVD will be very important for computer users that will be using it for the largest and most exciting games, software packages and movies. DVD technology likely to replace video tapes that is currently on the market.
It looks like a normal CD, but information bearing binary points (0 and 1) are much smaller and closer together, so instead of 650 MB of information that can be stored on a CD, a DVD can store now up to 4.7 GB. Unlike the CD, a DVD can have two faces on which to record information so that it can also be turned and read other 4.7GB of disk information. In the future we will have multiple layers inside so he could store 15 GB – enough for the largest program imaginable. The first DVD-ROM discs are instructive and recreational and with games. These use the additional capacity to add more segments of video and audio information and to make all media fragments look and sound better than CD-ROMs standard.
DVD-ROM Drive
To play a DVD a DVD-ROM drive is required – looks like the CD-ROM drive, but has two lasers: one for reading classical CDs and other disc installed to read DVD. After installing a DVD rom in our PC it will be able to read any disks – whether old or new.
Films on Disc
The huge capacity of a DVD disc is ideal for storing high-quality pictures and sound – in fact, Hollywood had from the outset an important role in launching the DVD, these is because movies began to be released both on videos and DVD, and how to run these video DVDs. For DVDs on your PC you need a video card DVD decoder that works alongside your PC’s video card. As the PCs will become more powerful there will be no a need for an additional video card, because the entire video will be ongoing conducted within the central processor of the ultra-fast PC.
Register DVD
Like the CD-ROM, DVD-ROMs is that you can write information, but also DVD-ROMs that can burn information and to delete and then rewrite another information. These ones can be used in order to relieve the hard drive of a huge number of files or to temporarily store video and music.
Historical
Phillips has worked in the 1990s with Japanese Corporation Sony to create a digital versatile disk (Digital Versatile Disk) to have a greater storage capacity than the CD. Other companies did not accept the standard proposed by Phillips and Sony engineers. However, the DVD producers opted for a different standard and Phillips-Sony Alliance has agreed to license the results of the research from the global consortium.
