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单片机数字钟的设计2007-01-1621:46单片机数字钟的设计开机时，显示12：00：00的时间开始计时；0.1用来P0.0用来较秒,P较分,P0.2用来较时。C语言原程序：#includeAT89X52.Hunsignedcharcodedispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};unsignedchardispbitcode[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};unsignedchardispbuf[8]={0,0,16,0,0,16,0,0};unsignedchardispbitcnt;unsignedcharsecond;unsignedcharminite;unsignedcharhour;unsignedinttcnt;unsignedcharmstcnt;unsignedchari,j;voidmain(void){TMOD=0x02;TH0=0x06;TL0=0x06;TR0=1;ET0=1;EA=1;while(1){if(P0_0==0){for(i=5;i0;i--)for(j=248;j0;j--);if(P0_0==0){second++;if(second==60){second=0;}dispbuf[0]=second%10;dispbuf[1]=second/10;while(P0_0==0);}}if(P0_1==0){for(i=5;i0;i--)for(j=248;j0;j--);if(P0_1==0){minite++;if(minite==60){minite=0;}dispbuf[3]=minite%10;dispbuf[4]=minite/10;while(P0_1==0);}}if(P0_2==0){for(i=5;i0;i--)for(j=248;j0;j--);if(P0_2==0){hour++;if(hour==24){hour=0;}dispbuf[6]=hour%10;dispbuf[7]=hour/10;while(P0_2==0);}}}}voidt0(void)interrupt1using0{mstcnt++;if(mstcnt==8){mstcnt=0;P1=dispcode[dispbuf[dispbitcnt]];P3=dispbitcode[dispbitcnt];dispbitcnt++;if(dispbitcnt==8){dispbitcnt=0;}}tcnt++;if(tcnt==4000){tcnt=0;second++;if(second==60){second=0;minite++;if(minite==60){minite=0;hour++;if(hour==24){hour=0;}}}dispbuf[0]=second%10;dispbuf[1]=second/10;dispbuf[3]=minite%10;dispbuf[4]=minite/10;dispbuf[6]=hour%10;dispbuf[7]=hour/10;}}#includeAT89X52.Hunsignedcharcodedispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};unsignedchardispbitcode[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};unsignedchardispbuf[8]={0,0,16,0,0,16,0,0};unsignedchardispbitcnt;unsignedcharsecond;unsignedcharminite;unsignedcharhour;unsignedinttcnt;unsignedcharmstcnt;unsignedchari,j;voidmain(void){TMOD=0x02;TH0=0x06;TL0=0x06;TR0=1;ET0=1;EA=1;while(1){if(P0_0==0){for(i=5;i0;i--)for(j=248;j0;j--);if(P0_0==0){second++;if(second==60){second=0;}dispbuf[0]=second%10;dispbuf[1]=second/10;while(P0_0==0);}}if(P0_1==0){for(i=5;i0;i--)for(j=248;j0;j--);if(P0_1==0){minite++;if(minite==60){minite=0;}dispbuf[3]=minite%10;dispbuf[4]=minite/10;while(P0_1==0);}}if(P0_2==0){for(i=5;i0;i--)for(j=248;j0;j--);if(P0_2==0){hour++;if(hour==24){hour=0;}dispbuf[6]=hour%10;dispbuf[7]=hour/10;while(P0_2==0);}}}}voidt0(void)interrupt1using0{mstcnt++;if(mstcnt==8){mstcnt=0;P1=dispcode[dispbuf[dispbitcnt]];P3=dispbitcode[dispbitcnt];dispbitcnt++;if(dispbitcnt==8){dispbitcnt=0;}}tcnt++;if(tcnt==4000){tcnt=0;second++;if(second==60){second=0;minite++;if(minite==60){minite=0;hour++;if(hour==24){hour=0;}}}dispbuf[0]=second%10;dispbuf[1]=second/10;dispbuf[3]=minite%10;dispbuf[4]=minite/10;dispbuf[6]=hour%10;dispbuf[7]=hour/10;}