计算机联机系统的出现,计算机网络的发展使得计算机与通讯线路相结合,而这两者的结合产生了一个相互间的接口问题,这需要有一个专门装置实现之,这个专门装置就是通讯控制设备。 通讯控制设备完成计算机与通讯网络的接口功能,它由一定的通讯控制硬件——一般也叫通讯控制器,以及一定的通讯控制软件——一般也叫通讯软件联合组成,两者缺一不可。 The emergence of computer online system, the development of computer network makes computer and communication lines combine, and the combination of the two has created a mutual interface problem, which requires a special device to achieve this special device is the communication control equipment. Communication control equipment to complete the computer and communication network interface function, which consists of a certain communication control hardware - usually also called communication controller, as well as some communication control software - also commonly called communication software, a combination of the two are indispensable.