What is a CD(Compact Disk)?
CDs or Compact Disks are optically readable media. CDs are the replacement of the phonograph disc. The main material of the CD is plastic. The shape of the plastic is circular and one side of the circular plastic is coated with the reflecting metal coating, usually aluminium. Data can be stored much more densely in optic media than in magnetic media, like Hard disk. Optic media have a much longer life span. Millions of bits are burned into this coating.
CDs can store many types of data, like audio, video, games, any documents, etc. The data are scanned by a laser beam with a CD driver to visualize the data. The only thing that is less in CD is storage capacity is very less compared to HDD or DVD and the read-write speed is also very less. The storage capacity of a CD is 700 MB only.
What is a CD (Compact Disk)?
Compact disc is portable storage devices used for storing digital data like recording, storing, and playing video, and audio. Compact Disc can be explained as a disc-like memory device made from plastic material.