如何用C51单片机做出以下程序 “秒表是倒计时,从100秒开始倒计时 用数...答:假设P0 P2接数码管,静态驱动,程序如下:include<reg52.h> define uchar unsigned char define uint unsigned int uchar num=100;uchar time=0;//共阴数码管七段码 uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77};void Delay1ms(uint i) //1ms延时...