按键控制四个数码管显示1234

用按键控制四个数码管显示1234

#include <reg51.h>

#include <intrins.h>

#include <absacc.h>

#define DUAN XBYTE[0xdFFF]

#define WEI XBYTE[0xEFFF]

unsigned char code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; #define uint unsigned int

#define uchar unsigned char

uchar num,a;

void delay()

{

uint i,j;

for(i=0;i<10;i++)

for(j=0;j<110;j++);

}

void main()

{

WEI=0x01;

DUAN=table[a];

while(1)

{

P1=0xff;

num=P1;

num=num|0xf0;

while(num!=0xff)

{

delay();

num=P1;

num=num|0xf0;

while(num!=0xff)

{

num=P1;

switch(num)

{

case 0xee:a=1;

break;

case 0xde:a=2;

break;

case 0xbe:a=3;

break;

case 0x7e:a=4;

用按键控制四个数码管显示1234

} } } break; } DUAN=table[a]; }