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...
编程实现倒计时的秒表,2位LED数码管显示,延时采用硬件延时的方法_百 ...答:编程实现倒计时的秒表,2位LED数码管显示,延时采用硬件延时的方法 用单片机的定时器T0定时,计时1秒,实现倒计时的秒表的功能。程序如下 include<reg51.h> unsigned char code tab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//共阳数码管段码表 unsigned char second;//秒倒...