Classification of optical discs
1.CD (universal capacity: 700MB)
CD Audio: The CD that stores music data format is the music CD we buy on the market.
CD Video: The CD that stores video data format is the VCD we bought in the early years.
CD-ROM: ordinary CD disc, which can store data in various formats supported by the computer.
2. DVD disc (universal capacity: 4.7GB)
DVD Audio: A disc that stores music data format, which I haven't seen in the market for the time being, but now the recording software can record music format files in the computer to a DVD disc, making it similar to the disc with the same effect as the music CD, but the amount of music storage is much higher than the music CD.
DVD Video: The disc that stores video data format is the DVD video disc that we bought in the early years.
DVD-ROM: ordinary DVD disc, which can store data in various formats supported by the computer.
3.Blu ray disc (universal capacity: 25GB/50GB)
BD-R: There are many application scenarios of Blu ray discs. For example, games on PS4 and PS5 are Blu ray discs, and high-definition movies we watch are also Blu ray discs;
Although with the development of the times, data storage methods are becoming more and more diversified, such as USB flash disk, cloud storage, mobile phone, SD card, etc; Optical disc, a storage medium that is not easy to carry, easy to wear and easy to damage, seems to have fallen behind the times, but the advantage of optical disc is that it is cheap. At present, many courseware, movies and music discs are widely used, and daily contact and use are relatively frequent.