#include<STC12C2052AD.H>
sbit Add_Key=P3^3;//增加亮灯数sbit Doc_Key=P3^7;//减少亮灯数sbit s=P1^0;
unsigned int k(unsigned char n){//返回值 return n;}
void delay (unsigned int a){ // 1ms延时程序 unsigned int i; while(--a!=0){ for(i=0; i<600; i++); }}void main(void){//主函数 Add_Key=1; Doc_Key=1; while(1){//循环程序部分 unsigned char n;//临时变量 if(Add_Key==0){ delay(20);//延时20ms去抖动 if(Add_Key==0&&s==1){ n++;//变量加1 if(n>=8){ n=8;}} while(Add_Key==0);} if(Doc_Key==0){ delay(20);// if(Doc_Key==0&&s==0){ n--; if(n==0){ n=0;}} while(Doc_Key==0);} switch (n){//判断n的值 case 1: P1=0xfe; break; case 2: P1=0xfc; break; case 3: P1=0xf8; break; case 4: P1=0xf0; break; case 5: P1=0xe0; break; case 6: P1=0xc0; break; case 7: P1=0x80; break; case 8: P1=0x00; break; default: break; } } }