单片机原理及应用课程设计报告(12)

单片机原理及应用课程设计报告

keycode4=0;}}

if(keycode2==1){

P2_0=0;//用来区别是否在改的状态，让时秒暗一//改分

keycode4=0;}}

if(keycode2==2){

P2_0=0;//用来区别是否在改的状态，让分秒暗一//改时

些P2_1=0;P2_4=0;P2_5=0;

if(keycode3==1)//加分

{

if(keytcount==0){

minute++;}

minute=minute+keytcount*10;keytcount=0;if(minute==60){

minute=0;}

if(minute>60){

minute=minute-60;}

keycode3=0;}

if(keycode4==1)//减分{

if(keytcount==0){

minute--;}

minute=minute-keytcount*10;keytcount=0;if(minute==-1){

minute=59;}

if(minute<-1){

minute=minute+60;}

些P2_1=0;P2_2=0;P2_3=0;

for(i=6;i>0;i--){}

if(keycode3==1)//加时

{

if(keytcount==0){hour++;}

hour=hour+keytcount*10;keytcount=0;if(hour==24){hour=0;}

if(hour>24&&hour<44){

hour=hour-20;}

if(hour>=44){

hour=hour-40;}

keycode3=0;}

if(keycode4==1)//减时{

if(keytcount==0){hour--;}

hour=hour-keytcount*10;keytcount=0;

if(hour==-1)