高手帮忙51c单片机——想制作倒计时报警器,求个c程序答:刚写的程序,可以通过S0(功能键),S1(加键),S2(减键)设定初值,倒数为00-00-00时蜂鸣器响,通过八位LED显示;include<reg52.h> include<intrins.h> define uchar unsigned char define uint unsigned int uchar code wei[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//八位位选...
51单片机数码管0832烟雾报警器的编程程序答:include<at89x52.h> include <intrins.h> sbit ST=P3^2;sbit OE=P3^0;sbit EOC=P3^1;unsigned char aa,bb,cc;unsigned char ge,shi,dge,dshi;unsigned adata[]={5,10,15,20,25,30,35,40,50,60,75,80,85,90,95,99,70};void delay30ms(){ unsigned char a,b;for(a=10;a...