A memory that contains a fine pattern of data permanently defined is?
A memory that contains a fine pattern of data permanently defined is ROM
Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices. Data stored in ROM can only be modified slowly, with difficulty, or not at all, so it is mainly used to store firmware (software that is closely tied to specific hardware, and unlikely to need frequent updates) or application software in plug-in cartridges.
Once data has been written onto a ROM chip, it cannot be removed and can only be read. Unlike main memory (RAM), ROM retains its contents even when the computer is turned off. ROM is referred to as being nonvolatile, whereas RAM is volatile. ... A variation of a ROM is a PROM (programmable read-only memory).
ROM are very small in memory size. These memory is non-volatile, in the sense, the program stored in ROM don't get erased with power shut down. ROM are used to store permanent programs, which are very essential your hardware to perform correctly. A typical example of ROM is BIOS chip.