摘要
基于89C52单片机的实用八路物位测量仪表(以下简称测量仪),由ATMEL公司的89C52作为核心芯片,利用P1的八个I/O口作为输入口完成脉冲量信号采样,用P3口作为八路输出控制;用Maxim公司的Max7219构成串行显示来驱动LED,这种结构最大限度地利用了单片机硬件资源。同时,串行显示方式省去了单片机直接定时对LED的服务时间,节约了CPU时间,在实时性很强的工业控制系统中,显得尤为重要。
The practical eight-way Level Meter is based on the 89C52 microcontroller (hereinafter referred meter). its core chip is structed by ATMEL's 89C52,the sampling of pulse input signal is completed by P1 interface eight I/O ,and the P3 interface is used as eight-way output control,The Maxim's Max7219 is used as a serial display drive to the LED. The system is such a optimizing structure that the hardware resources of the microcontroller is fully used. At the same time,this method of serial displays does not oc...
出处
《微计算机信息》
北大核心
2008年第5期81-82,共2页
Control & Automation
基金
河北省教育厅自然科学基金项目(Z2007428)