ROM

AMIBIOS BIOSShort for Read-Only Memory, ROM is a type of memory that is capable of holding data and being read from; however, it is not capable of being written to or having its data modified. Unlike RAM, ROM is non-volatile and capable of keeping its contents regardless if it has power or not. A good example of a type of PROM is the computer BIOS as shown in the example picture to the right.

Also see: EPROM, EEPROM, Memory definitions, PROM