code_init_的博客

单片机控制的人行道红绿灯#include<reg51.h>#define uchar unsigned charuchar code arr[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};//共阴uchar time1=0;uchar time2=0;uchar second1=12;uchar second2;void main(){ P0=arr[second1/10]; //初始化红灯 P2=arr[s