凌阳1602液晶显示器驱动。IOA高8接数据 IOB8～10接RS、RW、E-Sunplus 1602 liquid crystal display driver. IOA then 8 data high IOB8 ~ 10 then RS, RW, E

用51单片机实现计算器功能，包括LM020L液晶以及4*6的矩阵键盘。-Calculator with 51 single-chip realization of functions, including LM020L LCD and 4乘6 matrix keyboard.

/RS,RW,E分别接RE0,RE1,RE2 D7-D0接RD口 #include <pic.h> /*头文件*/ #define LCD_RS RE0 /*定义引脚*/ #define LCD_RW RE1 #define LCD_E RE2 #define Busy RD7 void WR_COMM() void DISPLY() void CHECK_BF()