数码管动态显示的51单片机时钟设计

一看就会，适合初学者参考T0，T1同时开中断，和别人的有点不一样源程序如下/数码管设计的可调电子钟/K1，K2分别调整小时和分钟#include#include#define uchar unsigned char#define uint unsigned intuchar code DSY_CODE=0xC0,0xF9,0xA4,0xB0,0x99, /共阳段码0x92,0x82,0xF8,0x80,0x90,0xFF;uchar DSY_BUFFER=0,0,0xBF,0,0,0xBF,0,0; /显示缓存uchar Scan_BIT; /扫描位，选择要显示的数码管 uchar DSY_IDX; /显示缓存索引uchar Key_State; /P1端口按键状态uchar h,m,s,s100; /十分秒，1/100svoid DelayMS(uchar x)/延时 uchar i; while(x-) for(i=0;i23)h=0; DSY_BUFFER0=DSY_CODEh/10; DSY_BUFFER1=DSY_CODEh%10;void Increase_Minute()/分钟处理函数 if(+m59) m=0;Increase_Hour(); DSY_BUFFER3=DSY_CODEm/10; DSY_BUFFER4=DSY_CODEm%10;void Increase_Second() /秒处理函数 if(+s59) s=0;Increase_Minute(); DSY_BUFFER6=DSY_CODEs/10; DSY_BUFFER7=DSY_CODEs%10;void T0_INT() interrupt 1/T0中断动态扫描数码管显示 TH0=(65536-1000)/256; TL0=(65536-1000)%256; P2=Scan_BIT; /选通相应数码管 P0=DSY_BUFFERDSY_IDX;/段码送p0进行取反，共阴共阳转换 Scan_BIT=_crol_(Scan_BIT,1);/准别下次选通的数码管 DSY_IDX=(DSY_IDX+1)%8; /索引0-7内循环void T1_INT() interrupt 3 /T1中断控制时钟运行 TH1=(65536-50000)/256; TL1=(65536-50000)%256; if(+s100=20) /50ms*20=1s延时 s100=0;Increase_Second(); void main()/主程序 P0=P3=0xFF; TMOD=0x11; /T0，T1工作模式1 TH0=(65536-1000)/256; TL0=(65536-1000)%256; TH1=0xDC; TL1=0; TCON=0x01; EA=1; /开中断 ET0=1; ET1=1; h=0; m=s=s100=0; /将时分秒段码放入显存 DSY_BUFFER0=DSY_CODEh/10; DSY_BUFFER1=DSY_CODEh%10; DSY_BUFFER3=DSY_CODEm/10; DSY_BUFFER4=DSY_CODEm%10; DSY_BUFFER6=DSY_CODEs/10; DSY_BUFFER7=DSY_CODEs%10; Scan_BIT=0xFE; DSY_IDX=0; TR0=TR1=1;/启动两个定时器 Key_State=0xFF; while(1) if(P1Key_State) DelayMS(10); if(P1Key_State) Key_State=P1;EA=0; if(Key_State&0x01)=0)Increase_Hour(); /K1 +小时 else if(Key_State&0x02)