电话号码.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=P0^2;
sbit scl=P0^3;
code char led[]={0xfe,0x98,0x10,0xD4,0x32,0x92,0xD7,0xD3,0X00};
int i,j,k,num,tub,a,b,c;

delay(q)
{
for(i=0;i<=400;i++)
for (j=0;j<=q;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(50);
b=6;
shift();
delay(50);
b=5;
shift();
delay(50);
b=4;
shift();
delay(50);
b=3;
shift();
delay(50);
b=2;
shift();
delay(50);
b=1;
shift();
delay(50);
b=0;
shift();
delay(50);
}
}while(1);
}