CDDVDskivor

CDDVDskivor refers to compact discs (CDs) and digital versatile discs (DVDs), which are optical storage media formats used for storing digital data, including audio, video, and computer files. Both formats utilize a laser to read data encoded on a disc's surface. CDs typically store around 700 megabytes of data, primarily used for audio albums and smaller software applications. DVDs offer a larger storage capacity, generally ranging from 4.7 gigabytes for single-layer discs to 8.5 gigabytes for dual-layer discs, making them suitable for storing movies, larger software, and backups.

The technology behind CDs and DVDs involves a disc made of polycarbonate plastic with a reflective layer, onto which microscopic pits and lands are pressed. A laser beam is directed at this layer, and the way the light reflects back (or doesn't, in the case of a pit) is interpreted as binary data (0s and 1s). Different wavelengths of lasers and smaller pit sizes allow DVDs to store significantly more data than CDs. While these formats were once dominant for data storage and media distribution, they have largely been superseded by newer technologies like Blu-ray discs and cloud-based storage solutions due to their higher capacity and convenience.