ROM
Short for Read-Only Memory, ROM is memory that is capable of holding data and
having that data read from the chip. However, ROM 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 ROM is EEPROM, which is used
for the computer BIOS,
as shown in the example picture to the right.
Also see: EPROM, Memory definitions, PROM