They are read and written by lasers, but mirrors are components.
I think it means it's not rewritable.
Yes
CD ROM stands for Compact Disc Read-Only Memory. A standard CD can be written to or read from, but a CD-ROM is loaded with pre-installed software for the user.
Compact Disk Read Only Memory
compact disc
Compact disc - Read only memory
Compact Disc-Read Only Memory
CD-R is Compact Disk - Read CD-RW is Compact Disk - Read, Write
The difference between a drive and disk is that a drive is used to read a disk whether it be a floppy disk or a compact disk.
Compact Disk Read Only Memory.
== == contains stored information that can be read on computer
Compact Disk - Read Only Memory