合理占用空间的智能数模转换控制系统  

Intelligent D/A conversion control system of rational using space

作　　者：崔海龙 李金海 张云飞 

机构地区：[1]黑龙江省电子技术研究所,哈尔滨150040

出　　处：《信息技术》2005年第6期60-62,共3页Information Technology

摘　　要：提出一种节省印制电路板空间的智能数模转换控制方法,系统以AT89C51为主体构成控制电路,通过MAX232芯片接收上位机发送的命令,控制串行数模转换器MAX517输出模拟量,以便控制设备。着重介绍了8位串行数模转换器MAX517的特性,并详细说明了AT89C51单片机与MAX517和MAX232的硬件连接与软件编程方法。This paper presnted a kind of intelligent D/A conversion control method of saving printed circuit board space.The control circuit is composed of AT89C51 mainly.The system received the instructions of computer through MAX 232 chip,controlled serial digital-analog converter MAX517 to produce analog variable in order to control equipment.The paper introduced characteristics of 8 bits serial D/A converter MAX517,illustrated interfaces between AT89C51 and MAX517,MAX232,and software programming method.

关 键 词：AT89C51单片机 MAX517 MAX232 串行数模转换 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]