采用8位LED动态扫描时钟演示程序.doc

/*/ / 采用8位LED动态扫描时钟演示程序/ LRM 2004.03.31 /*/使用12MHZ晶振，P2口输出段码，P1口作列扫描，用共阳LED数码管/#include reg51.hcode char dis_711=0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x00;/* 共阳LED段码表 0 1 2 3 4 5 6 7 8 9 不亮 */ code char scan_con8=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f; / 列扫描控制字data char disdata6=0x00,0x00,0x00,0x00,0x00,0x00;/计时单元数据初值,共6个data char dis8=0x00,0x00,0x00,0x00,0x00,0x00,0x0a,0x00;/显示单元数据,共6个数据data char con1s=0x00,con04s=0x00,con=0X00; /1秒定时用sbit key0=0x80;sbit key1=0x81;sbit key2=0x82;/*/1毫秒延时程序/*/delay1ms(int t)int i,j;for(i=0;it;i+) for(j=0;j=6) con=0;TR1=0;ET1=0;TR0=1;ET0=1; /if(con!=0) if(key1=0) delay1ms(10); while(key1=0); disdatacon+; if(disdatacon=10) disdatacon=0;discon=disdatacon;dis6=0x0a; /if(con!=0) if(key2=0) delay1ms(10); while(key2=0); if(disdatacon=0) disdatacon=0x09; else disdatacon-; discon=disdatacon;dis6=0x0a; EA=1;/*/扫描程序/*/scan()char k;for(k=0;k6;k+) P2=dis_7disk;P1=scan_conk;delay1ms(1);P1=0xff; /*/初始化程序/*/clearmen()int i;for(i=0;i=10) disdata0=0;disdata1+; if(disdata1=6) disdata1=0;disdata2+; if(disdata2=10) disdata2=0;disdata3+; if(disdata3=6) disdata3=0;disdata4+; if(disdata4=10) disdata4=0;disdata5+; if(disdata5=2 ) if(disdata4=4) disdata4=0;disdata5=0; dis0=disdata0;dis1=disdata1;dis2=disdata2;dis3=disdata3;dis4=disdata4;dis5=disdata5; ET0=1;/*/0.4秒闪烁中断程序 /*/void time_intt1(void) interrupt 3 EA=0;TR1=0;TH1=0x3C;TL1=0xB0;TR1=1; con