A computer memory chip that stores values but does not allow updates, in which the values are nonvolatile in that they are retained even when the computer is unpowered
Abbreviated ROM; computer memory or storage that can be read but not written to by the user ROM is created at the time of computer chip, card, or disc manufacture and is used to store the computer's essential system programming or other non-changeable data
Permanent memory, not user-programmable The Courier V Everything modem's factory settings are stored in ROM and can be read (loaded) into RAM as an operational configuration if DIP switch S10 is ON at power on
A semiconductor memory whose data cannot be erased, or overwritten; it can only be accessed (read) for use by the CPU The data in a ROM is of a permanent nature and is programmed by the ROM manufacturer In many cases, its programmed information identifies the dedicated function of a computer A ROM can also be in the physical form of a module (tape or disk) that is plugged into a computer to change its operation from one program to another