Subelement E: Digital Logic— Topic 38: Memory
Question 3-38E2
Element 3 (GROL)What is the name of the semiconductor IC that has a fixed pattern of digital data stored in its memory matrix?
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.
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