Summary:
- This article explains the inner workings of a compact disc (CD), which is a type of optical storage media used to store digital information.
- It describes the different layers of a CD, including the protective layer, the reflective layer, and the data layer, and how they work together to store and read data.
- The article also discusses the laser technology used to read the data on a CD and how the data is encoded and decoded to be played back as music or other digital content.