(完整版)基于51单片机的电子时钟设计与实现毕业设计

if(subtime==0) {

ddatahd--; } }

if(ddatahd==255)

{ ddatahd=9; ddatahg--; if(ddatahg==255)

{ ddatahg=2;

ddatahd=3; }}}

if(fselect==0) { chgi++; if(chgi==255) {

flagplay=0; chgi=0; } }

if(flagspk==1) {

if((addtime==0)||(subtime==0)) flagspk=0; speak=~speak; }

else speak=1; } }

}

void int0zd() interrupt 0 {

if(flagspk==1) flagspk=0; else

{

flagplay=~flagplay; fselect=0; dlyint(); IE0=0;

}

}

void int1zd() interrupt 2 {

if(flagspk==1) flagspk=0; else

{

fselect++; fselect %= 3;

if(fselect!=0) { TMOD=0x11; TH1=0x3c; TL1=0xb0; ET1=1; ES=0; TR1=1;} else {

TMOD=0x21; TH1=0xe6; TL1=0xe6; ET1=0; ES=1; TR1=1; TR0=1;} dlyint(); IE1=0;

}

}

void t0zd() interrupt 1 {

TH0=0x3c; TL0=0xb0; t0num1--;

if(t0num1==0) {

t0num1=10; sled1=~sled1; sled2=~sled2; t0num2--; if(t0num2==0) { t0num2=2; secdata++; if(secdata==60) { secdata=0;

datamd++;

if(datamd==10) {

datamd=0;

datamg++; if(datamg==6) { datamg=0;

datahd++;

if((datahg!=2)

(datahd==10))

&&

{