【摘要】 数据通信是依照通信协议,利用数据传输技术在两个功能单元之间传递数据信息,它可实现计算机与计算机、计算机与终端以及终端之间的数据信息传递。本文介绍了数据通信的基本原理、交换方式及其优点、缺点、适用范围和分类,并展望了数据通信未来的应用前景。更多还原

【Abstract】 Data communication according to communication protocols and makes use of data transmission technique in two functional units.It may achieve data information transfer in computers,in computers and terminals and in terminals.This paper also introduces basic principle,interchange modes and their advantages,disadvantages,sphere of application and categories of data information,and forecasts future development prospects in its application.更多还原