菜鸟想请问一下各位高手 图中四位数码管与51单片机相连的1234四个脚...答:// 数码管与51单片机相连,实物与仿真图一样连接就可以,也可以在A~G、DP线上串一个300欧姆的电阻。include<reg52.h> define uchar unsigned char uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,};//数组0到F uchar ...
单片机C51程序设计,要求设置P1口数码管显示45分钟后,p0.0口LED灯一直闪...答:include<reg51.h> unsigned char i,j,m;unsigned char count=0;unsigned char minute=0;bit flag=1;bit flashbit=0;unsigned char a[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};sbit P27=P2^7;sbit P30=P3^0;sbit P31=P3^1;sbit P00=P0^0;sbit P35=P3^5;void...
利用51单片机,用按键和数码管组成一个控制系统,要求四个数码管显示四...答:include<reg51.h> define uchar unsigned char uchar temp;int key1,key,disbuf;// 此表为 LED 的字模 0 1 2 3 4 5 6 7 8 9 a b c d e f unsigned char code LED7Code[] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};...
用51单片机实现每隔一秒数码管显示刷新一次,用定时器0实现定时功能。但...答:你的程序还有其它的问题,修改后的程序发在下面,并有仿真图。include <reg51.h> include <intrins.h> unsigned char code LED7Code[] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,//0-9字模 0x88,0x83,0xc6,0xa1,0x86,0x8e};//共阳极7段数码管A-F字模,原来的是...
求C51单片机汇编语言控制两位数码管倒计时程序,最好能说明下思路_百度...答:查询方式:ORG 00H START: MOV R0,#20 MOV R4,#60 LP0: MOV TMOD,#01H MOV TH0,#3CH MOV TL0,#0B0H MOV DPTR,#TABLE SETB TR0 LP1: JBC TF0,LP2 ACALLDISP AJMP LP1 LP2: DJNZ R0,LP0 CLR TR0 MOVR0,#20 MOV A,R4 CJNE A,#0,DEC1 MOV R4...