利用51单片机和3位数码管实现10分钟内的简易计时器答:修改如下:#include<reg51.h>#define uint unsigned int#define uchar unsigned char uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};sbit key1=P2^7;sbit key2=P2^6;sbit weiH=P3^0;sbit weiM=P3^1;sbit weiL=P3^...
c51单片机定时器30秒倒计时程序,一个按键控制开始,另一个按键控制暂停和...答:include<reg51.h>unsigned char code ledtab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};//0-9unsigned char sec=30,scanled;unsigned char disdat[2];sbit keys=P1^0;sbit keyc=P1^1;sbit fmq=P3^0;void delay(unsigned int x){unsigned int i,j;for(i=...