利用单片机设计实现一个60秒倒计时显示装置,并且计时到后发出报警声音...答:include<reg52.h>sbit bz=P3^1;unsigned char a[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xd8,0x80,0x90};unsigned char n,time=60;main(){P1=a[0];P2=a[6];TMOD=0X01;TH0=(65536-10000)/256;TL0=(65536-10000)%256;EA=1;ET0=1;TR0=1;while(1);}timer0() interrup...
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...