带按键修改的数码管时钟

1、精选优质文档-倾情为你奉上#include<reg51.h>#define uchar unsigned char#define uint unsigned intuchar code dulatab=0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xbf;uchar code keytab=0xE7,0xD7,0xB7,0x77,0xEB,0xDB,0xBB,0x7B,0xED,0xDD,0xBD,0x7D,0xEE,0xDE,0xBE,0x7E;uchar buf8

2、=0;uchar num,keyvalue,sec=0,min=0,hour=0,flag=0,counter=0,wei=-1;sbit wela=P13;sbit dula=P12;void delay(uchar u)uchar i;for(;u>0;u-)for(i=124;i>0;i+);void inito() TMOD=0X01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;sec=46;min=59;hour=10;void bcd()buf0=sec%10;buf1=sec/10;buf2

3、=16;buf3=min%10;buf4=min/10;buf5=16;buf6=hour%10;buf7=hour/10;void display()static uchar i;bcd();P0=0;wela=1;wela=0;P0=dulatabbufi;dula=1;dula=0;P0=(1<<i);wela=1;wela=0;delay(2);if(+i>8) i=0;uchar key()staticuchar scan1,scan2,scan;static uchar i;P2=0XF0;scan1=P2&0xf0;if(scan1!=0XF0)dela

4、y(5);if(scan1!=0xf0)scan1=P2&0xf0;P2=0X0F;scan2=P2&0x0f;while(P2!=0x0f);scan=scan1|scan2;for(i=0;i<16;i+)if(scan=keytabi)num=i;return(num);/*if(i=16);return 0xff; */return 0xff;return 10;void keyscan() uchar sec0,sec1,min0,min1,hour0,hour1,hour2;keyvalue=key();switch(keyvalue)case 0:if(fl

5、ag=0)flag=1;TR0=0;elseTR0=1;flag=0;wei=-1;break;case 1:if(flag=1)wei+;if(wei=2|wei=5)wei=wei+1;if(wei=8)wei=0;break;case 2:if(flag=1)if(wei=-1)wei=8;wei-;if(wei=5|wei=2)wei=wei-1;if(wei=-1)wei=7;break;case 3:if(flag=0)break;if(wei=0)sec0=sec%10;sec0+;if(sec0=10)sec0=9;sec = sec /10*10+sec0;if(wei=1)

6、sec+=10;sec1=sec/10;if(sec1=6)sec1=5;sec = sec1*10+sec%10;if(wei=3)min0=min%10;min0+;if(min0=10)min0=9;min = min/10*10+min0;if(wei=4)min+=10;min1=min/10;if(min1=6)min1=5;min = min1*10+min%10;if(wei=6)hour0=hour/10;if(hour0=2)hour1=hour%10;hour1+;if(hour1=4)hour1=3;hour=hour/10*10+hour1;elsehour1=hou

7、r%10;hour1+;if(hour1=10)hour1=9;hour=hour/10*10+hour1;if(wei=7)hour+=10;if(hour%10)>3)hour2=hour/10;if(hour2=2)hour2=1;elsehour2=hour/10;if(hour2=3)hour2=2;hour=hour2*10+hour%10;break;case 4:if(flag=0)break;if(wei=0)sec0=sec%10;sec0-;if(sec0=-1)sec0=0;sec = sec /10*10+sec0;if(wei=1)sec1=sec/10;se

8、c1-;if(sec1=-1)sec1=0;sec = sec1*10+sec%10;if(wei=3)min0=min%10;min0-;if(min0=-1)min0=0;min = min/10*10+min0;if(wei=4)min1=min/10;min1-;if(min1=-1)min1=0;min = min1*10+min%10;if(wei=6)hour0=hour%10;hour0-;if(hour0=-1)hour0=0;hour=hour/10*10+hour0;if(wei=7)hour1=hour/10;hour1-;if(hour1=-1)hour1=0;hour=hour1*10+hour%10;break;default:break; void main()inito();while(1)display();keyscan();void timer0() interrupt 1TH0=(65536-50000)/