51单片机时钟程序.pdf

51单片机时钟程序--第1页

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#includereg52.h

#includeintrins.h

sbitP32=P3^2;

sbitP23=P2^3;

sbitP22=P2^2;

sbitP21=P2^1;

sbitP20=P2^0;

unsignedcharx;

unsignedcharDisBuf[8]={0,0,0,0,0,0,0,0};

unsignedcharDisBuf1[8]={0,0,0,0,0,0,0,0};

codeunsignedcharTab[10]={0x81,0xed,0x43,0x49,0x2d,0x19,0x11,0xcd,0x01,0x09};

unsignedchartimer0_count1=0,t1=0;

//unsignedchartimer0_count3=0,t3=0;

unsignedchartimer0_count2=0;

unsignedcharSecond=0,Minute=0;

unsignedintYear=17;

unsignedintMonth=01;

unsignedintDay=02;

unsignedintHour=14;

unsignedchara1=0;

unsignedintmond=1;//显示模式

unsignedinta=9;//倒计时初试时间

unsignedintb=60;

voidmDelay(unsignedintdelay)

{

unsignedchari;

for(;delay0;delay--)

{

for(i=0;i124;i++)

{

_nop_();

_nop_();

_nop_();

}

}

}

voidtimer0(void)interrupt1

{

TH0=0xfc;TL0=0x66;

timer0_count2++;

if(timer0_count21000)

{

P32=!P32;

可修编-

51单片机时钟程序--第1页

51单片机时钟程序--第2页

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timer0_count2=0;

if(mond==4)

{

b--;

if(b1)

{

b=60;

a--;