Read-only memory (ROM) is a type of non-volatile memory that stores data permanently. Unlike RAM, ROM retains its contents even when the power is turned off. It is used primarily in devices where permanent storage is essential, such as firmware and essential system instructions. ROM chips are manufactured with data already stored in them during the fabrication process, making their contents unalterable or "read-only." This stability makes ROM crucial in devices like computers, game consoles, and embedded systems. While ROM cannot be easily modified, newer forms like EEPROM and flash memory allow for limited rewrites, adding flexibility to storage solutions.
