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微机数据采集系统是微机检测或控制系统中的重要环节。本文以Z80微机为例,阐述如何设计一个合适而又经济的数据采集接口。文中讨论了由接口电路芯片构成的接口、微机总线直接与A/D转换器相连接、带有采样保持器和多路开关的接口、多通道A/D芯片接口等,并例举了用各种接口进行数据采集的基本程序。
Computer data acquisition system is an important part of computer testing or control system. In this paper, Z80 microcomputer as an example, describes how to design a suitable and economical data acquisition interface. The paper discusses the interface composed by the interface circuit chip. The microcomputer bus is directly connected with the A / D converter, the interface with sample and hold and multiplexer, the multi-channel A / D chip interface and so on. Interface of the basic procedures for data acquisition.