Read-Only Memory

Meaning – The term read-only memory, refers to memory in which stored data cannot be modified by the user except under special conditions.

It contains the programming needed to start a PC, which is essential for boot-up; it performs major input/output tasks and holds programs or software instructions. This type of memory is often referred to as “firmware”—how it is altered has been a source of design consideration throughout the evolution of the modern computer.

Because ROM is read-only, it cannot be changed; it is permanent and non-volatile, meaning it also holds its memory even when power is removed.

Example of usage“In a typical modern computer, there are numerous ROM chips located on the motherboard and a few on expansion boards. The chips are essential for the basic input/output system (BIOS), boot up, reading and writing to peripheral devices, basic data management, and the software for basic processes for certain utilities.”