基于P89C669的硬件汉字库设计  

Design of Hardware Chinese Character Library Based on P89C669

作　　者：黄海宏[1] 王海欣[1] 

机构地区：[1]合肥工业大学,安徽合肥230009

出　　处：《工业控制计算机》2007年第3期54-56,共3页Industrial Control Computer

摘　　要：论述了硬件汉字库的基本原理,使用51MX内核的Flash微控制器P89C669作为CPU,结合512kB的EEPROM存储器AT29C040A,介绍了硬件汉字库制作方法,将EEPROM作为外部数据存储器进行寻址,通过机内码推算汉字区位码,从而计算偏移地址寻址汉字库进行字模提取,并给出对应的C程序。该方式能大大简化系统的维护,提高程序的可读性和效率,加快产品开发速度,降低软件成本。This paper discusses the principle of hardware Chinese character library,it used P89C669 as CPU,which is 51MX core Flash microcontroller,combined 512kB EEPROM AT29C040A,introduces the method of making hardware Chinese character library.It used EEPROM as external RAM,it calculated area position code based on code inside computer,got offset address to pick up Chinese character models.This paper also supplied corresponding C program.The method in paper can simplify the system＇s maintenance greatly,and increase program＇s readability and efficiency,quicken product development,reduce software cost.

关 键 词：硬件汉字库 汉字字模 区位码 机内码 P89C669 AT29C040A 

分 类 号：TP368.12[自动化与计算机技术—计算机系统结构]