单片机倒计时的编程答:ORG 0000H LJMP MAIN ORG 000BH LJMP T0ISR ORG 0030H MAIN:MOV TMOD,#01H MOV TH0,#HIGH(65536-10000)MOV TL0,#LOW(65536-10000)SETB TR0 SETB ET0 SETB EA MOV R0,#99 MOV R1,#0 LOOP:JB P1.0,LOOP1 JNB P1.0,INC R0 CJNE R0,#100,LOOP MOV R0,#99 SJMP LOOP LOOP1:J...
单片机如何用用定时计数器的方法做出88秒倒计时啊啊啊啊,急急急,求...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fuchar number,dat=88,cnt=0;void t0isr() interrupt 1{ TH0=(65536-10000)/256; TL0=(65536-10000...
单片机控制倒计时定时器答:哥们 我做的定时器 的程序 这个是正的 你该一下吧 include<reg52.h> define uint unsigned int define uchar unsigned char uchar code du[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};uchar code da[]={0x40,0x79,0x24,0x30,0x19,0x12,0x2,0x78,0x0,0x10};disp...
高手帮忙51c单片机——想制作倒计时报警器,求个c程序答:刚写的程序,可以通过S0(功能键),S1(加键),S2(减键)设定初值,倒数为00-00-00时蜂鸣器响,通过八位LED显示;include<reg52.h> include<intrins.h> define uchar unsigned char define uint unsigned int uchar code wei[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//八位位选...
求用单片机汇编语言帮我写一个数码管倒计时程序,用中断延时50ms循环20...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 ACALL DISP AJMP LP1 LP2: DJNZ R0,LP0 CLR TR0 MOV R0,#20 MOV A,R4 CJNE A,#0,DEC1 MOV R4,#60 AJMP JP1 DEC1:...