求翻译：　　操作系统发展至今,模块结构已经非常明确,即可分成处理器管理、存储器器管理、设备管理和文件管理等模块,如表1所示。只有文件系统是属于建立在存储器上的逻辑管理功能,因为可以说,现今的操作系统是一种直接的计算机硬件的逻辑映射,是硬件组合模型的软件表达形式。是什么意思？

　　Operating system development, modular structure has been very clear, may be divided into processor management, memory management, device management and file management module, as shown in table 1. Only the file system is part of the logic built in the memory management functions, can be said that modern operating systems is a logical mapping of computer hardware directly, is a combination of hardware software expression model.