void Clear(); void Delay(unsigned int t); void Write_com(unsigned char d); void Write_data(unsigned char d); unsigned char Read_data(); void Disp_char(unsigned char pos,unsigned char dat); void Disp_word0(unsigned char posx,unsigned char *p,unsigned char n); void Lcd_system(void); bit hw_yima(); void delay0(unsigned int t); void Disp_control(unsigned char zm); void Disp_number(unsigned char pos,unsigned int dat); void Report(unsigned char sl); void Rec_bus(unsigned char rec); void Disp_pucture(unsigned char *p); void bus_contorl();