Explanation: A Read-Only Memory (ROM) is a type of non-volatile semiconductor integrated circuit where digital data is permanently or semi-permanently stored during manufacturing or programming. This fixed pattern of data can be read repeatedly but cannot be easily modified or overwritten, making it ideal for storing firmware, boot-up instructions, or lookup tables. In contrast, Random-Access Memory (RAM) is volatile memory used for temporary storage; its data is lost when power is removed, and it can be both read from and written to. A Register is a small, high-speed storage location within a CPU, holding data temporarily during processing. A Latch is a fundamental memory element that stores a single bit of information, primarily used for temporary data holding in digital circuits, not for storing a large, fixed pattern of data in a dedicated IC.