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终端与显示技术康建荣: 单片机显控系统中的汉字输入
单片机显控系统中的汉字输入
康建荣
(中国电子科技集团公司第 20 研究所陕西西安 710068)
摘要: 在实际应用中, 特别是在需要实时大量输入汉字的显控处理应用中, 利用传统单片机显控设计方法是无法实
现的; 通过对汉字内码的分析, 给出硬件汉字库的制作方法, 提出针对一、二级汉字库编码检索的拼音输入检索方法, 利用
Ph ilips P89C51RD 2 单片机为核心处理芯片, 设计一种具有通过键盘用汉语拼音输入法输入汉语拼音, 利用相应程序通过编
码检索, 在显控系统中实时输入汉字, 并在L CD 上显示或通过 R S 232 串口输出汉字点阵数据的方法。
关键词: P89C51RD 2; 汉语拼音; 汉字库; L CD; C51
中图分类号: T P368 1 文献标识码: B 文章编号: 1004 373X (2005) 09 022 03
Input Ch inese Characters in Single Ch ip D isplay & Con trol System
KAN G J ianrong
(The 20th Institute, E lectronic Science and Techno logy Group Co rpo ration of China, X i′an, 710068, China)
Abs tra c t: In the actual app lication, especially in needing large input w hat Ch inese characters of disp lay and contro l app lication,
m ak ing use of the m ach ine of traditionalM CU to disp lay and contro l app lication to design the m ethod can′t be realized; by analysing
Ch inese ISN , m anufacturing m ethod of the hardw are Ch inese characters is given; the input m ethod of first and second class Ch inese
characters libraries,m ak ing use of the Ph illip M CU P89C51RD 2 to handle the ch ip fo r co re, and design an input m ethod by using the
keyboard to input the Ch inese ical phabetic characters, w ith the p rogram by coding search w ith Ch inese language index, in
disp lay and contro l system input the Ch inese characters on real t