AT89C51与字符型液晶模块(KS0070)联接的C语言源程

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Ks0070基本英文资料:16com/80seg driver & controller for dot matrix LCD in 128-pin Bumped chip package. Operational temperature range from
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KS0070(44780) 16x2 字符液晶屏驱动演示程序总线方式 
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连接线图: LCM-------51 LCM-------51 LCM--------51 
DB0-----P0.0 DB4-----P0.4 RW-------P2.0 
DB1-----P0.1 DB5-----P0.5 RC-------P2.1 
DB2-----P0.2 DB6-----P0.6 E--------P2.7 =>74ls00+wr+rd 
DB3-----P0.3 DB7-----P0.7 VLCD接1K2电阻到GND 

[注]:AT89C51的晶振频率为12MHz 
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