Computed Tomography Technologist Practice Exam

The term ROM stands for Read Only Memory. It is a type of non-volatile storage that is used in computers and other electronic devices to permanently store data. Unlike RAM, which is volatile and loses its contents when power is turned off, ROM retains its information, making it essential for storing firmware or software that is not intended to be modified frequently, such as the system's bootloader or basic input/output system (BIOS).

Read Only Memory is designed to allow for reading data but not writing it under normal operating conditions, hence its name. This characteristic makes it particularly useful for housing critical instructions that need to remain intact during power cycles and system resets.

In contrast, other options such as Read Once Memory, Random Access Memory, and Run On Memory either do not accurately describe ROM or pertain to different types of memory entirely. Random Access Memory, for instance, is a type of volatile memory that can be read from and written to, which is essential for a computer's active operations and processing tasks.