给你参考#include"reg52.h"char led[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};sbit key1=P1^4;sbit key2=P1^5;sbit key3=P1^6;sbit key4=P1^7;sbit line=P1^3;sbit led1=P2^0;sbit led2=P2^1;sbit led3=P2^2;sbit led4=P2^3;char num1=0,num2=0;void delay(int x){int i,j; |