Definition:
In addition to a hard drive, most desktop and laptop computers come with an optical drive. It might be a read-only device, such as a standard CD-ROM or DVD-ROM drive, or a rewritable device, such as a CD-RW, DVD-RAM, or DVD-RW drive. Most modern desktop and laptop computers include a rewritable drive, which allows you to back up files to CDs or DVDs, as well as burn music or photo CDs.
Examples:
If your computer has a rewritable optical drive, you can back up your photos to a CD or DVD.
