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计算机与外部设备间进行通信的技术手段主要有两种:数据通道和网络。通道技术即主计算机和相距很近的从属外部设备之间以极高的速度进行数据传输,其特点是一旦数据传输开始便无需软件的干预。网络技术则使多个用户通过共享介质接口来进行数据传输,往往距离较远并且可支持并发的任务。一般来说,网络技术具有较好的互连性,但代价是软件管理较为复杂。 光通道(Fibre Channel)则综合了两种技术的优势。首先,采用光通道可使系统结构得到简化,它既可用作计算机内的
There are two main technical means of communication between a computer and an external device: a data channel and a network. Channel technology means that the host computer and the closely spaced slave peripherals transmit data at an extremely high speed, which features no software intervention once the data transfer starts. Network technology allows multiple users to share data through the media interface for data transfer, often far away and can support concurrent tasks. In general, network technology has good interconnectivity, but at the expense of software management is more complex. The Fiber Channel combines the advantages of both technologies. First of all, the use of optical channels can be simplified system structure, which can be used as a computer