Computer System, Computer Science, Hardware.
the system’s connection to the external world. Each I/O device is connected to the I/O bus by either a controller or an adapter. 输入输出设备，提供系统与外界交互的通道。每个IO设备都通过一个控制器或适配器与IO总线相连。 Disk Storage 磁盘存储 Disks are workhorse storage devices that hold enormous amounts of data, on the order of hundreds to