电话号码11.c

本文件包含了使用C语言编写单片机的各种入门程序

#include <reg51.h>
#include <stdio.h>
//-------------------------------------
sbit sda=P0^1;
sbit scl=P0^0;
//----------------------------------------
code char led[]={0xfe,0x98,0x10,0xD4,0x32,0x92,0xD7,0xD3,0X00};
//-----------------------------------
int i,j,k,num,tub,a,b,c;
//-----------------------------------
delay()
{for(i=0;i<=400;i++)
for (j=0;j<=125;j++)
{;}
}
//----------------------------
shift()
{num=led[b];
scl=0;
for(i=0;i<8;i++)
{
tub=num&0x80;
tub=tub>>7;
sda=tub;
scl=1;
num=num<<1;
scl=0;
}
}
//-------------------------------------
main()
{
do
{
for(; ;)
{
b=7;
shift();
delay();
b=6;
shift();
delay();
b=5;
shift();
delay();
b=4;
shift();
delay();
b=3;
shift();
delay();
b=2;
shift();
delay();
b=1;
shift();
delay();
b=0;
shift();
delay();
}
}while(1);
}