ROM：Read only memory; internal storage device in which information is permanent.
ROM：Read only memory; internal storage device in which information is permanent.
只读存储器：只读存储器；内部存储设备，信息是永久存在的。
ROM：Read only memory; internal storage device in which information is permanent.
只读存储器：只读存储器；内部存储设备，信息是永久存在的。