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1、51單片機(jī)c語言電子鐘（已加入調(diào)時(shí)、鬧鈴、整點(diǎn)報(bào)時(shí)功能）效果圖：程序如下：//51單片機(jī)c語言電子鐘（已加入調(diào)時(shí)、鬧鈴、整點(diǎn)報(bào)時(shí)功能）//WHJWNAVY2011/10/14?#include#include#defineucharunsignedchar#defineuintunsignedint/*七段共陰管顯示定義*///此表為L(zhǎng)ED的字模,共陰數(shù)碼管0-9?-ucharcodedispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0
2、x40};?//段碼控制/*定義并初始化變量*/ucharseconde=0;//秒ucharminite=0;//分ucharhour=12;//時(shí)ucharmstcnt=0;//定時(shí)器計(jì)數(shù)，定時(shí)50ms，mstcnt滿20，秒加1ucharshi=0;//鬧鈴功能ucharfen=0;ucharbjcs;//報(bào)警次數(shù)sbitP1_0=P1^0;????????????????//second調(diào)整定義sbitP1_1=P1^1;????????????????//minite調(diào)整定義sbitP1_2=P1^2;????????????????/
3、/hour調(diào)整定義sbitP1_5=P1^5;?????//整點(diǎn)報(bào)時(shí)sbitP1_3=P1^3;?????//鬧鈴功能，調(diào)整時(shí)間sbitP1_6=P1^6;?????//調(diào)整時(shí)sbitP1_7=P1^7;?????//調(diào)整分sbitP1_4=P1^4;?????//關(guān)閉鬧鈴/*函數(shù)聲明*/voiddelay(uintk);?//延時(shí)子程序voidtime_pro();?????//時(shí)間處理子程序voiddisplay();??????//顯示子程序voidkeyscan();??????//鍵盤掃描子程序/*延時(shí)子程序*/voiddelay(ui
4、ntk){ucharj;while((k--)!=0)??{???for(j=0;j<125;j++)????{;}??}}?/*時(shí)間處理子程序*/voidtime_pro(void){?if(seconde==60)?{??seconde=0;??minite++;??if(minite==60)??{???minite=0;???hour++;???if(hour==24)???{????hour=0;???}??}?}}/*顯示子程序*/voiddisplay(void){?if(P1_3==1)?{?P2=0XFE;?P0=dispcod
5、e[seconde%10];//秒個(gè)位?delay(1);?P2=0XFD;?P0=dispcode[seconde/10];//秒十位?delay(1);?P2=0XFB;?P0=dispcode[10];//間隔符-?delay(1);?P2=0XF7;?P0=dispcode[minite%10];//分個(gè)位?delay(1);?P2=0XEF;?P0=dispcode[minite/10];//分十位?delay(1);?P2=0XDF;?P0=dispcode[10];//間隔符-?delay(1);?P2=0XBF;?P0=dispc
6、ode[hour%10];//時(shí)個(gè)位?delay(1);?P2=0X7F;?P0=dispcode[hour/10];//時(shí)十位?delay(1);?}}/*鍵盤掃描子程序*/voidkeyscan(void){?if(P1_0==0)//秒位的調(diào)整?{??delay(30);??if(P1_0==0)??{???seconde++;???if(seconde==60)???{????seconde=0;???}??}??delay(250);?}?if(P1_1==0)//分位的調(diào)整?{??delay(30);??if(P1_1==0)??{?
7、??minite++;???if(minite==60)???{????minite=0;???}??}??delay(250);?}?if(P1_2==0)//時(shí)位的調(diào)整?{??delay(30);??if(P1_2==0)??{???hour++;???if(hour==24)???{????hour=0;???}??}??delay(250);?}}/*整點(diǎn)報(bào)警*/voidzhengdian(void)?{??if((seconde==0)&(minite==0))//整點(diǎn)報(bào)時(shí)??{????P1_5=0;????delay(1000);??
8、??P1_5=1;??}?}/*定時(shí)鬧鐘*/voiddingshi(void){?if(P1_3==0)??? //按住P1_3B
