只读存储器

例句：

1. 1. The computer uses a ROM to store its operating system.
   这台电脑使用只读存储器来存储其操作系统。
2. 2. The ROM is the first step in programming the microprocessor.
   只读存储器是编程微处理器的第一步。
3. 3. The ROM contains all the software that the computer needs to run.
   只读存储器包含电脑运行所需的所有软件。