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基于单片机的LCD显示终端设计
引用本文:陈享成,耿长青.基于单片机的LCD显示终端设计[J].电力自动化设备,2007,27(9):110-112.
作者姓名:陈享成  耿长青
作者单位:1. 郑州铁路职业技术学院,信息工程系,河南,郑州,450052
2. 郑州铁路职业技术学院,电气工程系,河南,郑州,450052
摘    要:为适应工业应用现场需要将本地远程命令以汉字和ASCII码显示的要求,提出采用基于单片机的液晶显示器(LCD)显示终端。其硬件系统主要由微处理机、译码电路、字库、临时缓冲区、LCD模块接口、通信电路、蜂鸣器发声、复位及看门狗等组成。软件采用RTX51实时操作系统,可实现按时间片轮转和抢先的任务调度,并支持事件和信号驱动。叙述了软件的任务分解、任务工作流程。所设计的LCD显示终端成本低、可靠,符合设计要求。

关 键 词:LCD显示终端  实时操作系统  单片机  RTX51Tiny
文章编号:1006-6047(2007)09-0110-03
收稿时间:2006-12-30
修稿时间:2007-04-01

LCD terminal design based on singlechip
CHEN Xiang-cheng,GENG Chang-qing.LCD terminal design based on singlechip[J].Electric Power Automation Equipment,2007,27(9):110-112.
Authors:CHEN Xiang-cheng  GENG Chang-qing
Abstract:In industrial application site,the remote control commands need to be displayed in Chinese and ASCII codes locally.An LCD(Liquid Crystal Display) terminal based on singlechip is designed for it.Its hardware is mainly composed of microprocessor,encoding circuit,word warehouse,buffers,LCD interface,communication circuit,buzzer,reset circuit and watchdog.Its software adopts RTX51 real-time operating system,realizing task dispatch by time slice rotation and competition mechanism,and supporting event and signal driving.The task decomposition and working flow are described.The designed LCD terminal is cheap,reliable and meets design requirements.
Keywords:LCD terminal  real-time operating system  singlechip  RTX51Tiny
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