also: ロム
noun
Computing term for non-volatile memory that can be read but not normally written to.
このプログラムは読み出し専用メモリに格納されている。
This program is stored in read-only memory.
ファームウェアはROMに書き込まれている。
The firmware is written to ROM.
Random-access memory (RAM) is volatile and allows both reading and writing, unlike ROM.
Flash memory is a type of non-volatile memory that can be electrically erased and reprogrammed, whereas traditional ROM is typically read-only after manufacturing.
Compound of 読み出し (readout) + 専用 (exclusive use) + メモリ (memory), a direct translation of the English term 'read-only memory'.