What happens to the content of ROM during normal CPU operation?

The correct response is based on the fundamental characteristics of Read-Only Memory (ROM). During normal CPU operation, the content of ROM is designed to remain unchanged. ROM is non-volatile memory, which means that it retains its data even when the power is turned off. This is critical for storing firmware, which is essential software that initializes hardware and provides low-level control for operating the device.

Since ROM is intended to be read from rather than written to, the information within it is typically only written during the manufacturing process—not during regular operation. This makes it distinct from other types of memory like RAM, which can be frequently altered and is used for temporary data storage while a device is powered on. The consistent and unchanging nature of ROM content allows systems to reliably access essential instructions without the risk of accidental modifications or data loss.