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#include <reg51.h>
#include <intrins.h>
unsigned char led []= {0xfe, 0xfd, 0xfb, 0xf7, 0xef,0xdf, 0xbf, 0x7f, 0x7f,0xbf,0xdf,0xef, 0xf7, 0xfb,0xfd,0xfe,
0xfe,0xfb,0xef,0xbf, 0x00,0x7e,0xbd,0xdb,0xe7,0xdb,0xbd,0x7e, 0x0f,0xf0,0xfe,0x7f,0xfd,0xbf,0xfb,0xdf,0xf7,0x00};
sbit P3_2 =P3^2;
char x = 0;
char k= 0;
char b=200;
void delay(unsigned char time) // 延時函數(shù)
{
unsigned char i=0;
for (;time>0;time--)
for (i=0;i<=200;i++);
}
key0() interrupt 0{ //每按一下花樣加1
x++;
if (x == 6) //花樣到六時，LED黑屏，再按一下花樣重新開始
x = 0;
delay (300);
}
key1() interrupt 2{b=b+2000; //控制流水燈速度，沒按一下加200
if (b==8200)
b=200;
}
void main (){
IT0 = 1;
IT1=1;
EX0 = 1;
EX1 = 1;
EA = 1;
P2 = 0xff; //初始時LED全黑
while(1){
if(P3_2==0){
switch(x){ //花樣
case 0: P2 = 0xff;break;
case 1: for(k=0;k<=7;k++){
if(x == 1) //花樣切換（打斷正在進(jìn)行的花樣）
{P2 = led [k];
delay (200);}} break;
case 2:for (k=8;k<=15;k++){
if(x == 2){P2 = led [k] ;delay (b);}}break;
case 3: for(k=16;k <=19;k++){
if(x == 3){
P2 = led [k];delay (b);}}break;
case 4: for(k=20;k <=27;k++){
if(x == 4){
P2 = led [k];delay (b);}}break;
……………………
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