1.DB1~DB7是P0^0~P0^6#define LCD_data P0 //数据口sbit LCD_RS = P1^0; //寄存器选择输入sbit LCD_RW = P1^1; //液晶读/写控制sbit LCD_EN = P2^5; //液晶使能控制sbit LCD_PSB = P1^2; //串/并方式控制sbit LCD_RST = P1^4; //液晶复位端口