51单片机按键分别控制数码管显示精度为秒,十分秒,百分秒的秒表程序...答:sbit wei2=P3^4;sbit wei3=P3^5;sbit key1=P2^0;//根据单片机型号自行定义,有的51单片机无此管脚 sbit key2=P2^1;uint a=0;//中断次数计数,一次10ms,100次为1 秒 //共阴数码管七段码 uchar TABLE[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//延时子程序...
51单片机c语言设计,按键控制数码管,依次按下显示0到9循环答:include<reg51.h> sbit k1=P1^0;define uint16 unsigned int define uchar unsigned char uchar code shuzu[ ]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};void delay(){ uint16 i=1000;while(i--);} void main(){ uchar n ;P2=0xfe;P1=0xff;while(1){ if...