HD44780C51编程实例

3个HD44780编程实例, #include #include sbit GND_LCD=P1^7; sbit rs=P1^0; sbit rw=P1^1; sbit e=P1^2; unsigned char busy(void); void ctrl(unsigned char); void wd_h(unsigned char); void wd_l(unsigned char); unsigned char rd(void); void write(unsigned char); void init(void); void NOP(v