如何在51单片机矩阵键盘里按一个键可实现数码管动态显示而不是一个值...答:include<reg51.h>#define uchar unsigned char;uchar distab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00}; //0到fvoid delay(unsigned int a){unsigned int i,j;for(i=0;i<a;i++)for(j=0;j<120;j++);}uchar kb...
51单片机8路流水灯! 用三个按键控制三个程序!每个按键对应一个程序...答:include<reg51.h> define uchar unsigned char sbit key1=P1^0;sbit key2=P1^1;sbit key3=P1^2;uchar led1[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};uchar led2[]={0xe7,0xdb,0xbd,0x7e};bit flag;void delay(uchar a){ uchar i;while(a--)for(i=0;i<120;i++)...