 | This article needs additional citations for verification. (March 2009) |
 | |
 | |
| Media type | Optical disc |
|---|---|
| Encoding | Various |
| Capacity | Typically up to 700 MB (up to 80 minutes audio) |
| Read mechanism | 600-780 nm wavelength (infrared and red edge) semiconductor laser, 1200 Kbit/s (1×) to 100 Mb/s (56x) |
| Write mechanism | 780 nm wavelength (infrared and red edge) semiconductor laser |
| Standard | Rainbow Books |
| Developed by | Philips, Sony |
| Usage | Audio and data storage |
| Extended from | Recordable LaserDisc CD-ROM |
| Extended to | CD-RW DVD-R |
| Released | 1988[citation needed] |
| Optical discs |
|---|
 |
CD-R (Compact disc-recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can only be written once and read arbitrarily many times.
CD-R discs (CD-Rs) are readable by most CD readers manufactured prior to the introduction of CD-R, unlike CD-RW discs.