W83791d是华帮公司生产的通用的具有I2C总线接口的硬件设备监控芯片。此芯片可以监控10种电压的输入信号，5种风扇的转速，3种温度的输入等。在我们的存储项目种，目前只是用到了电源电压的监控和硬盘温度的监控。驱动的移植主要是借鉴了I2C的linux下的标准架构和一种linux的新的文件系统—sysfs文件系统。-Howard W83791d is to help companies with generic I2C bus interface hardware monitoring chips. This chip can monitor the voltage of 10 kinds of input signals, five kinds of fan speed, three kinds of input such as temperature. Storage projects in our species, is only used in the power supply voltage monitor and hard disk temperature monitoring. Transplantation is mainly driven I2C draws the linux standard architecture and a linux file system of the new-sysfs file system.