摘要
讨论了智能仪器仪表人机接口的交互式方案,将LCD显示屏划分为运行模式、预置参数、运行参数、提示信息等4个显示区,采用优先权编码器作为键盘编码器,按键读数直接送至MCU,实现了占用单片机I/O口线少、占用单片机机时少、简化相应程序等最优设计。
A scheme about instrumental human?computer interface was proposed.The display contents are classified of operation mode,setting parameters,running parameters,and prompting messages,which could be displayed in4display places respectively.By using priority encoder as the interface of the key to MCU,the optimization design is accomplished which enable reduce the occupying of MCU I /O ports,MCU time ,simplify the procedure design.
出处
《自动化与仪表》
2003年第6期17-20,共4页
Automation & Instrumentation
基金
国家科技部技术创新基金项目(00C26211200076)
