设计8051通过8255A芯片扩展3位七段***阳极LED显示器,要用C51程序编写，(汇编程序能找到。。。)

#include?<reg52.h>

#include?<absacc.h>

#define?uint?unsigned?int

#define?uchar?unsigned?char

#define?PA?XBYTE[0x7FFC]?

#define?PB?XBYTE[0x7FFD]

#define?PC?XBYTE[0x7FFE]

#define?COM?XBYTE[0x7FFF]

uchar?code?DSY_CODE_Queue[]=

{

0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0x83,0xc6,0xa1,0x86,0x8e

};

void?Delay(uint?x)

{

uchar?i;

while(x--)

{

for(i=0;i<120;i++);

}

}

void?main()

{

uchar?j;

COM?=?0x80;

while(1)

{

//for(j=0;j<3;j++)

//{

j=0;

PA?=?DSY_CODE_Queue[j+1];

PB?=?DSY_CODE_Queue[j+2];

PC?=?DSY_CODE_Queue[j+3];

Delay(100);

//}

}

}