51单片机数码管倒计时程序,从999999开始倒计时,用定时器T1的中断...答:include<reg51.h> define uchar unsigned char uchar code ledtab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};//0-9 uchar sec=0,min=0,hour;uchar time;uchar disdat[6];void delay(unsigned int x){ unsigned int i,j;for(i=0;i<x;i++)for(j=0;j<...
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^...
汇编语言 51单片机 倒计时器程序答:R2 CJNE A,#100,T0E MOV R2,#0 MOV A,R0 JZ T003 DEC R0 SJMP T0ET003: MOV A,R1 JZ T004 DEC R1 MOV R0,#9T0E: RETIT004: CLR TR0 RETITABLE: ; 共阴极数码管显示代码表 DB 3FH,06H,5BH,4FH,66H ;01234 DB 6DH,7DH,07H,7FH,6FH ;56789END ...
51单片机的秒表计时器设计,求大神帮忙设计电路图和C语言程序!!答:这个程序可以实现秒的计时,按键控制开始、暂停、清零功能,更多功能自己在看清程序的基础上进行改进。include <reg51.H>sbit P3_5 =P3^5;unsigned char code dispcode[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8, 0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,0x00};unsigned char...