【摘要】 在各类监控系统中，ＰＣ机通信卡被广泛应用，它是前置机的重要部件。本文提出了通用多路通信卡的设计方法，使通信卡具备串行同步和异步两种可选功能，串行通信波特率也可根据用户的需要随意选择。最后，给出了ＰＣ机与通信卡信息交换和动态链接库的设计方法。更多还原

【Abstract】 PC communication card is widely used in monitoring and control system, and it is an important component of front-end computer. This paper presents a design method of universal multiple communication card.The communication card has two functions of serial synchronous communication and asynchronous communication. The serial communication band rate is optional to the user’s need. The main chip of communicationcontrol is 82530, the bottom software of communication card is implemented with assembler language of singlechip processor. The method for information interchange between a PC and the communication card and DLLis introduced in the later paper.更多还原