/*************************************************************
功用： 完成电子时钟显现（C）界说： P3口位选，P1口段选，P0.0，P0.1，P0.2为调时口时刻： 2010—11—26阐明： 仿真存在问题，这可能是仿真软件的问题，需要将段位扫描反调实践运转的结果是正确的*************************************************************/#include unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};unsigned char dispbitcode[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};unsigned char dispbuf[8]={0,0,16,0,0,16,0,0};unsigned char dispbitcnt;unsigned char second;unsigned char minite;unsigned char hour;unsigned int tcnt;unsigned char mstcnt;unsigned char i,j;void main(void){TMOD=0x02;TH0=0x06;TL0=0x06;TR0=1;ET0=1;EA=1;while(1){if(P0_0==0){for(i=5;i>0;i--)for(j=248;j>0;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;i>0;i--)for(j=248;j>0;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;i>0;i--)for(j=248;j>0;j--);if(P0_2==0){hour++;if(hour==24){hour=0;}dispbuf[6]=hour%10;dispbuf[7]=hour/10;while(P0_2==0);}}}}void t0(void) interrupt 1 using 0{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;}}
