main.lst

串口扩展LED时钟子程序

C51 COMPILER V7.06   MAIN                                                                  08/18/2007 18:13:13 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <reg52.h>
   2          #include <stdio.h>
   3          sbit test=P0^0;
   4          //----------------------------------------------------------------
   5          //十六进制到十进制调整程序
   6          //designed by Kong Rui
   7          //version 1.0
   8          //功能描述：实现十六进制数到十进制数的变换
   9          //入口参数：hex_val，十六进制数
  10          //出口参数：dec_val，十进制数
  11          //-----------------------------------------------------------------
  12          unsigned char hex_to_dec(unsigned char hex_val)         
  13          {
  14   1       unsigned char dec_val;
  15   1       dec_val=((hex_val/10<<4)|(hex_val%10));
  16   1       return dec_val; 
  17   1      }
  18          
  19          //----------------------------------------------------------------
  20          //时间显示程序
  21          //designed by Kong Rui
  22          //version 1.0
  23          //功能描述：将十六进制的时分秒在数码管上显示出来，数码管采用的是串口扩展的，用74HC164驱动的共阴型，因而程