Introduction - If you have any usage issues, please Google them yourself
include"reg51.h"
#define Disp_Addr P2
#define Disp_Data P0
typedef unsigned char BYTE
typedef unsigned int WORD
typedef unsigned long DWORD
bit flag = 0
BYTE num = 0
BYTE count_50ms = 0
BYTE t0_count = 0
DWORD freq = 0