extern unsigned char lcd_dataread(void);
extern unsigned char lcd_cmdread(void);
extern void lcd_cmdwrite(char);
extern void lcd_datawrite(char);
extern void lcd_cursorxy(char,char);
extern void delay1ms(unsigned int);
extern void lcd_nop(unsigned char);
extern void lcd_reset(void);
extern void lcd_chkbusy(void);
extern void lcd_showbig(unsigned char *text,unsigned int);
extern void lcd_clear(void);
extern void lcd_initial(void);

extern void lcd_graphic_1(void);
extern void lcd_graphic_2(void);
extern void lcd_graphic_3(void);
extern void lcd_graphic_4(void);
extern void lcd_graphic_5(void);
extern void lcd_graphic_6(void);
extern void lcd_graphic_7(void);
extern void lcd_graphic_8(void);
extern void lcd_text_1(void);