用七段数码管显示数字.c

这是本人在学习51单片机时练习的C程序 [e-mail]

#include <reg51.h>
#include <stdio.h>
#include <stdlib.h>
#include <intrins.h>
#include <absacc.h>

#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long

#define nop _nop_()

sbit pc=P2^0;
sbit pd=P2^1;

code uchar table[4*4]={
                    0xfc,0x60,0xda,0xf2,
                    0x66,0xb6,0xbe,0xfe,
                    0xee,0xf6,0x10,0x11,
                    0x12,0x13,0x14,0x15};


uchar keycode;

void sendData(char c)
{
   char i;
	bit temp;
	c=~c;
	for(i=0;i<8;i++)
	{
	   if(c&0xfe==0xfe) temp=0;
		else temp=1;
		pc=0;
		pd=temp;
		pc=1;
		c>>=1;
		}
	}

	void delay(void)
	{
	uchar tempA=5;
	uint tempB;
	while(tempA--)
	{
	tempB=7269;
	while(tempB--);
	};
}

void display(uint lgl)
{
uchar q,b,s,g;
g=lgl%10;
s=(lgl/10)%10;
b=(lgl/100)%10;
q=(lgl/1000)%10;

sendData(table[q]);
sendData(table[b]);
sendData(table[s]);
sendData(table[g]);
}

void main(void)
{
uint i;
for (i=0;i<10000;i++)
   {
	display(i);
	delay();
	delay();
	delay();
	}
}