液晶与显示, 2009, 24 (5): 692, 网络出版: 2010-01-22
基于图形液晶显示器的汉字显示系统设计与仿真
Design and Simulation of Chinese Character Display System Based on Graphical Liquid Crystal Display
图形液晶显示器 液晶汉字显示 显示RAM编址 汉字取模 系统仿真 graphical liquid display Chinese character liquid display address coded of display RAM module acquirement of Chinese character system simulation
摘要
以图形液晶显示器LM3229为例,论述了单片机控制的汉字显示系统硬、软件设计思想和实现方法。对汉字显示机理做了详细剖析,对16×16点阵汉字字形与不同的汉字取模方式下字模数据之间的对应关系及字模数据读取方式做了详细的分析和设计。以两种汉字显示方式——文本方式和图形方式分别进行了显示程序设计和分析,比较了两种方式实现汉字显示的各自特点,同时对LM3229内显示RAM的编址方式及CGRAM的地址设置做了详细阐述。在嵌入式系统设计平台Proteus ISIS中对系统进行了设计与仿真,得到了理想的仿真结果,实现了系统最优化设计。
Abstract
The hardware and software design thought and implemented method of Chinese character display system based on MCU control by taking graphical liquid crystal display LM3229 as an example have been dealt with.The display mechanism of Chinese character display is taken apart in detail.System program designing and analyzing adopts two display ways,text display way and graphical display way,comparing the advantage of each way in realizing Chinese character display.Meanwhile,system design and simulation have been completed on embedded system design platform Proteus ISIS.Therefore,the optimizing design project is obtained and the typical design example of Chinese character liquid crystal display control system is given.
朱清慧, 陈绍东, 徐志强. 基于图形液晶显示器的汉字显示系统设计与仿真[J]. 液晶与显示, 2009, 24(5): 692. ZHU Qing-hui, CHEN Shao-dong, XU Zhi-qiang. Design and Simulation of Chinese Character Display System Based on Graphical Liquid Crystal Display[J]. Chinese Journal of Liquid Crystals and Displays, 2009, 24(5): 692.
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