51單片機仿真100實例

51單片機仿真100實例51單片機仿真100實例51單片機仿真100實例.?單片機C語言程序設計實訓100例—鑒于8051+Proteus仿真?事例第01篇基礎程序設計閃耀的LED/*名稱：閃耀的LED說明：LED按設定的時間間隔閃耀*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitLED=P1^0;延時voidDelayMS(uintx){uchari;while(x--){for(i=0;i<120;i++);}}主程序voidmain(){while(1){LED=~LED;DelayMS(150);}}從左到右的流水燈/*名稱：從左到右的流水燈說明：接在P0口的8個LED從左到右循環(huán)挨次點亮，產生走馬燈見效*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint延時1/76.voidDelayMS(uintx){uchari;while(x--){for(i=0;i<120;i++);}}主程序voidmain(){P0=0xfe;while(1){P0=_crol_(P0,1);//P0的值向左循環(huán)挪動DelayMS(150);}}8只LED左右往返點亮/*名稱：8只LED左右往返點亮說明：程序利用循環(huán)移位函數(shù)_crol_和_cror_形成來展轉動的見效*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint延時voidDelayMS(uintx){uchari;while(x--){for(i=0;i<120;i++);}}主程序voidmain(){uchari;P2=0x01;while(1){for(i=0;i<7;i++){2/76.P2=_crol_(P2,1);//P2的值向左循環(huán)挪動DelayMS(150);}for(i=0;i<7;i++){P2=_cror_(P2,1);//P2的值向右循環(huán)挪動DelayMS(150);}}}花招流水燈/*名稱：花招流水燈說明：16只LED分兩組按預設的多種花招變換顯示*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintucharcodePattern_P0[]={0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xe7,0xdb,0xbd,0x7e,0xbd,0xdb,0xe7,0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7,0xff,0xaa,0x55,0x18,0xff,0xf0,0x0f,0x00,0xff,0xf8,0xf1,0xe3,0xc7,0x8f,0x1f,0x3f,0x7f,0x7f,0x3f,0x1f,0x8f,0xc7,0xe3,0xf1,0xf8,0xff,0x00,0x00,0xff,0xff,0x0f,0xf0,0xff,0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff};ucharcodePattern_P2[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0xff,0xe7,0xdb,0xbd,0x7e,0xbd,0xdb,0xe7,0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7,0xff,0xaa,0x55,0x18,0xff,0xf0,0x0f,0x00,0xff,0xf8,0xf1,0xe3,0xc7,0x8f,0x1f,0x3f,0x7f,0x7f,0x3f,0x1f,0x8f,0xc7,0xe3,0xf1,0xf8,0xff,0x00,0x00,0xff,0xff,0x0f,0xf0,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff};延時3/76.voidDelayMS(uintx){uchari;while(x--){for(i=0;i<120;i++);}}//主程序voidmain(){uchari;while(1){

//從數(shù)組中讀取數(shù)據(jù)送至for(i=0;i<136;i++){

P0和P2口顯示P0=Pattern_P0[i];P2=Pattern_P2[i];DelayMS(100);}}}LED模擬交通燈/*名稱：LED模擬交通燈說明：東西向綠燈亮假定干秒，黃燈閃耀5次后紅燈亮，紅燈亮后，南北向由紅燈變?yōu)榫G燈，假定干秒后南北向黃燈閃耀5今后變紅燈，東西向變綠燈，這樣重復。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitRED_A=P0^0;//東西向燈sbitYELLOW_A=P0^1;sbitGREEN_A=P0^2;sbitRED_B=P0^3;//南北向燈sbitYELLOW_B=P0^4;sbitGREEN_B=P0^5;ucharFlash_Count=0,Operation_Type=1;//閃耀次數(shù)，操作種類變量延時voidDelayMS(uintx){uchari;4/76.while(x--)for(i=0;i<120;i++);}交通燈切換voidTraffic_Light(){switch(Operation_Type){case1://東西向綠燈與南北向紅燈亮RED_A=1;YELLOW_A=1;GREEN_A=0;RED_B=0;YELLOW_B=1;GREEN_B=1;DelayMS(2000);Operation_Type=2;break;case2://東西向黃燈閃耀，綠燈封閉DelayMS(300);YELLOW_A=~YELLOW_A;GREEN_A=1;if(++Flash_Count!=10)return;//閃耀5次Flash_Count=0;Operation_Type=3;break;case3://東西向紅燈，南北向綠燈亮RED_A=0;YELLOW_A=1;GREEN_A=1;RED_B=1;YELLOW_B=1;GREEN_B=0;DelayMS(2000);Operation_Type=4;break;case4://南北向黃燈閃耀5次DelayMS(300);YELLOW_B=~YELLOW_B;GREEN_B=1;if(++Flash_Count!=10)return;Flash_Count=0;Operation_Type=1;}}主程序voidmain(){while(1)Traffic_Light();}06單只數(shù)碼管循環(huán)顯示0~9/*名稱：單只數(shù)碼管循環(huán)顯示0~9說明：主程序中的循環(huán)語句頻頻將0~9的段碼送至P0口，使數(shù)字0~9循環(huán)顯示*/#include<reg51.h>5/76.#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};延時voidDelayMS(uintx){uchart;while(x--)for(t=0;t<120;t++);}//主程序voidmain(){uchari=0;P0=0x00;while(1){/*for(;i<11;i++){P0=~DSY_CODE[i];DelayMS(300);}//注:另一方案*/P0=~DSY_CODE[i];i=(i+1)%10;DelayMS(300);}}8只數(shù)碼管轉動顯示單個數(shù)字/*名稱：8只數(shù)碼管轉動顯示單個數(shù)字說明：數(shù)碼管從左到右挨次轉動顯示0~7，程序經過每次僅循環(huán)選通一只數(shù)碼管*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};延時voidDelayMS(uintx){uchart;while(x--)for(t=0;t<120;t++);}主程序voidmain(){6/76.uchari,wei=0x80;while(1){for(i=0;i<8;i++){P2=0xff;//封閉顯示wei=_crol_(wei,1);P0=DSY_CODE[i];//發(fā)送數(shù)字段碼P2=wei;//發(fā)送位碼DelayMS(300);}}}8只數(shù)碼管動向顯示多個不一樣樣字符電路如上圖/*名稱：8只數(shù)碼管動向顯示多個不一樣樣字符說明：數(shù)碼管動向掃描顯示0~7。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};延時voidDelayMS(uintx){uchart;while(x--)for(t=0;t<120;t++);}主程序voidmain(){uchari,wei=0x80;while(1){for(i=0;i<8;i++){P2=0xff;P0=DSY_CODE[i];//發(fā)送段碼wei=_crol_(wei,1);P2=wei;//發(fā)送位碼DelayMS(2);}}}7/76.8只數(shù)碼管閃耀顯示數(shù)字串電路如上圖/*

名稱：8只數(shù)碼管閃耀顯示數(shù)字串說明：數(shù)碼管閃耀顯示由0~7組成的一串數(shù)字本例用動向刷新法顯示一串數(shù)字，在停止刷新時全部數(shù)字顯示消逝。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedint段碼表ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};位碼表ucharcodeDSY_IDX[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};延時voidDelayMS(uintx){uchart;while(x--)for(t=0;t<120;t++);}主程序voidmain(){uchari,j;while(1){for(i=0;i<30;i++){for(j=0;j<8;j++){P0=0xff;P0=DSY_CODE[j];//發(fā)送段碼P2=DSY_IDX[j];//發(fā)送位碼DelayMS(2);}}P2=0x00;//封閉全部數(shù)碼管并延時DelayMS(1000);}}8只數(shù)碼管轉動顯示數(shù)字串電路如上圖/*名稱：8只數(shù)碼管轉動顯示數(shù)字串說明：數(shù)碼管向左轉動顯示3個字符組成的數(shù)字串*/8/76.#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint段碼表ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};//下邊數(shù)組看作環(huán)形行列，顯示從某個數(shù)開始的8個數(shù)〔10表示黑屏〕ucharNum[]={10,10,10,10,10,10,10,10,2,9,8};//延時voidDelayMS(uintx){uchart;while(x--)for(t=0;t<120;t++);}//主程序voidmain(){uchari,j,k=0,m=0x80;while(1){//刷新假定干次，保持一段時間的堅固顯示for(i=0;i<15;i++){for(j=0;j<8;j++){//發(fā)送段碼，采納環(huán)形取法，從第k個開始取第j個P0=0xff;P0=DSY_CODE[Num[(k+j)%11]];m=_crol_(m,1);P2=m;//發(fā)送位碼DelayMS(2);}}k=(k+1)%11;//環(huán)形行列首支針k遞加，Num下標范圍0~10，故對11取余}}11K1-K4控制LED移位/*名稱：K1-K4控制LED移位說明：按下K1時，P0口LED按下K2時，P0口LED按下K3時，P2口LED按下K4時，P2口LED

上移一位；下移一位；上移一位；下移一位；9/76.*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint延時voidDelayMS(uintx){uchari;while(x--)for(i=0;i<120;i++);}依據(jù)P1口的按鍵挪動LEDvoidMove_LED(){if((P1&0x10)==0)P0=_cror_(P0,1);//K1elseif((P1&0x20)==0)P0=_crol_(P0,1);//K2elseif((P1&0x40)==0)P2=_cror_(P2,1);//K3elseif((P1&0x80)==0)P2=_crol_(P2,1);//K4}//主程序voidmain(){ucharRecent_Key;//近來按鍵P0=0xfe;P2=0xfe;P1=0xff;Recent_Key=0xff;while(1){if(Recent_Key!=P1){Recent_Key=P1;//保留近來按鍵Move_LED();DelayMS(10);}}}K1-K4按鍵狀態(tài)顯示/*名稱：K1-K4按鍵狀態(tài)顯示說明：K1、K2按下時LED點亮，松開時熄滅，K3、K4按下并開釋時LED點亮，再次按下并開釋時熄滅；10/76.*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitLED1=P0^0;sbitLED2=P0^1;sbitLED3=P0^2;sbitLED4=P0^3;sbitK1=P1^0;sbitK2=P1^1;sbitK3=P1^2;sbitK4=P1^3;延時voidDelayMS(uintx){uchari;while(x--)for(i=0;i<120;i++);}主程序voidmain(){P0=0xff;P1=0xff;while(1){LED1=K1;LED2=K2;if(K3==0){while(K3==0);LED3=~LED3;}if(K4==0){while(K4==0);LED4=~LED4;}DelayMS(10);}}13K1-K4

分組控制

LED/*

名稱：K1-K4分組控制LED說明：每次按下K1時遞加點亮一只LED，全亮時再次按下那么再次循環(huán)開始，K2按下后點亮上邊4只LED，K3按下后點亮下邊4只LED，K4按下后封閉全部

LED11/76.*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedint延時voidDelayMS(uintx){uchari;while(x--)for(i=0;i<120;i++);}主程序voidmain(){uchark,t,Key_State;P0=0xff;P1=0xff;while(1){t=P1;if(t!=0xff){DelayMS(10);if(t!=P1)continue;//獲得4位按鍵值，由模式XXXX1111(X中有一位為0，其余均為1)變?yōu)槟Ｊ?000XXXX(X中有一位為1，其余均為0)Key_State=~t>>4;k=0;//檢查1所在地點，累加獲得按鍵號kwhile(Key_State!=0){k++;Key_State>>=1;}依據(jù)按鍵號k進行4種辦理switch(k){case1:if(P0==0x00)P0=0xff;P0<<=1;DelayMS(200);break;case2:P0=0xf0;break;case3:P0=0x0f;break;case4:P0=0xff;}}}12/76.}K1-K4控制數(shù)碼管移位顯示/*名稱：K1-K4控制數(shù)碼管移位顯示說明：按下K1時加1計數(shù)并增添顯示位，按下K2時減1計數(shù)并減少顯示位，按下K3時清零。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedint段碼ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};位碼ucharcodeDSY_Index[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};//待顯示到各數(shù)碼管的數(shù)字緩沖〔開始僅在0位顯示0，其余黑屏〕ucharDisplay_Buffer[]={0,10,10,10,10,10,10,10};延時voidDelayMS(uintx){uchari;while(x--)for(i=0;i<120;i++);}voidShow_Count_ON_DSY(){uchari;for(i=0;i<8;i++){P0=0xff;P0=DSY_CODE[Display_Buffer[i]];P2=DSY_Index[i];DelayMS(2);}}主程序voidmain(){uchari,Key_NO,Key_Counts=0;P0=0xff;P1=0xff;P2=0x00;while(1){Show_Count_ON_DSY();13/76.P1=0xff;Key_NO=P1;//P1口按鍵狀態(tài)分別為K1-0xfe，K2-0xfd,K3-0xfbswitch(Key_NO){case0xfe:Key_Counts++;if(Key_Counts>8)Key_Counts=8;Display_Buffer[Key_Counts-1]=Key_Counts;break;case0xfd:if(Key_Counts>0)Display_Buffer[--Key_Counts]=10;break;case0xfb:Display_Buffer[0]=0;for(i=1;i<8;i++)Display_Buffer[i]=10;Key_Counts=0;}//假定鍵未開釋那么僅刷新顯示，不進行鍵掃描while(P1!=0xff)Show_Count_ON_DSY();}}K1-K4控制數(shù)碼管加減演示/*名稱：K1-K4控制數(shù)碼管加減演示說明：按下K1后加1計數(shù)，按下K2后減1計數(shù)，按下K3后清零。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint段碼ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};待顯示的3位緩沖ucharNum_Buffer[]={0,0,0};按鍵代碼，按鍵計數(shù)ucharKey_Code,Key_Counts=0;延時voidDelayMS(uintx){uchari;while(x--)for(i=0;i<120;i++);}顯示函數(shù)voidShow_Counts_ON_DSY(){uchari,j=0x01;14/76.Num_Buffer[2]=Key_Counts/100;Num_Buffer[1]=Key_Counts/10%10;Num_Buffer[0]=Key_Counts%10;for(i=0;i<3;i++){j=_cror_(j,1);P0=0xff;P0=DSY_CODE[Num_Buffer[i]];P2=j;DelayMS(1);}}主程序voidmain(){uchari;P0=0xff;P1=0xff;P2=0x00;Key_Code=0xff;while(1){Show_Counts_ON_DSY();P1=0xff;Key_Code=P1;//有鍵按下時，數(shù)碼管刷新顯示30次，該行代碼同時起到延時作用if(Key_Code!=0xff)for(i=0;i<30;i++)Show_Counts_ON_DSY();switch(Key_Code){case0xfe:case0xfd:case0xfb:

if(Key_Counts<255)Key_Counts++;break;if(Key_Counts>0)Key_Counts--;break;Key_Counts=0;}Key_Code=0xff;}}4X4矩陣鍵盤控制條形LED顯示/*名稱：4X4矩陣鍵盤控制條形LED顯示說明：運轉本例時，按15/76.下的按鍵值越大點亮的LED越多。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint矩陣鍵盤按鍵特點碼表ucharcodeKeyCodeTable[]={0x11,0x12,0x14,0x18,0x21,0x22,0x24,0x28,0x41,0x42,0x44,0x48,0x81,0x82,0x84,0x88};延時voidDelayMS(uintx){uchari;while(x--)for(i=0;i<120;i++);}鍵盤掃描ucharKeys_Scan(){ucharsCode,kCode,i,k;低4地點0，放入4行P1=0xf0;假定高4位出現(xiàn)0，那么有鍵按下if((P1&0xf0)!=0xf0){DelayMS(2);if((P1&0xf0)!=0xf0){sCode=0xfe;//行掃描碼初值for(k=0;k<4;k++)//對4行分別進行掃描{P1=sCode;if((P1&0xf0)!=0xf0){kCode=~P1;for(i=0;i<16;i++)//查表獲得按鍵序號并返回if(kCode==KeyCodeTable[i])return(i);}elsesCode=_crol_(sCode,1);}}}return(-1);}主程序16/76.voidmain(){uchari,P2_LED,P3_LED;ucharKeyNo=-1;//按鍵序號，-1表示無按鍵while(1){KeyNo=Keys_Scan();//掃描鍵盤獲得按鍵序號KeyNoif(KeyNo!=-1){P2_LED=0xff;P3_LED=0xff;for(i=0;i<=KeyNo;i++)//鍵值越大，點亮的LED越多{if(i<8)P3_LED>>=1;elseP2_LED>>=1;}P3=P3_LED;//點亮條形LEDP2=P2_LED;}}}數(shù)碼管顯示4X4矩陣鍵盤按鍵號/*名稱：數(shù)碼管顯示4X4矩陣鍵盤按鍵號說明：按下隨意鍵時，數(shù)碼管都會顯示其鍵的序號，掃描程序第一判斷按鍵發(fā)生在哪一列，此后依據(jù)所發(fā)生的行附帶不一樣樣的值，進而獲得按鍵的序號。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedint段碼ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0x00};sbitBEEP=P3^7;//前一次按鍵和目前按鍵的序號，該矩陣中序號范圍0~15，16表示無按鍵ucharPre_KeyNo=16,KeyNo=16;延時voidDelayMS(uintx)17/76.{uchari;while(x--)for(i=0;i<120;i++);}//矩陣鍵盤掃描voidKeys_Scan(){ucharTmp;P1=0x0f;//高4地點0，放入4行DelayMS(1);Tmp=P1^0x0f;//按鍵后0f變?yōu)?000XXXX

，X

中一個為

0，3個仍為

1，經過異或把

3個

1變?yōu)?/p>

0，唯一的

0變?yōu)?switch(Tmp){

//判斷按鍵發(fā)生于

0~3列的哪一列case1:KeyNo=0;break;case2:KeyNo=1;break;case4:KeyNo=2;break;case8:KeyNo=3;break;default:KeyNo=16;//無鍵按下}P1=0xf0;//低4地點0，放入4列DelayMS(1);Tmp=P1>>4^0x0f;//按鍵后f0變?yōu)閄XXX0000

，X

中有

1個為

0，三個仍為

1；高

4位轉移到低

4位并異或獲得改變的值switch(Tmp)

//對0~3

行分別附帶初步值

0，4，8，12{case1:case2:case4:case8:

KeyNo+=0;break;KeyNo+=4;break;KeyNo+=8;break;KeyNo+=12;}}//蜂鳴器voidBeep(){uchari;for(i=0;i<100;i++){DelayMS(1);BEEP=~BEEP;}BEEP=0;}主程序voidmain(){18/76.P0=0x00;BEEP=0;while(1){P1=0xf0;if(P1!=0xf0)Keys_Scan();//獲得鍵序號if(Pre_KeyNo!=KeyNo){P0=~DSY_CODE[KeyNo];Beep();Pre_KeyNo=KeyNo;}DelayMS(100);}}開關控制LED/*名稱：開關控制LED說明：開關S1和S2分別控制LED1和LED2。*/#include<reg51.h>sbitS1=P1^0;sbitS2=P1^1;sbitLED1=P0^0;sbitLED2=P0^1;主程序voidmain(){while(1){LED1=S1;LED2=S2;}}繼電器控制照明設施/*名稱：繼電器控制照明設施說明：按下K1燈點亮，再次按下時燈熄滅*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedint19/76.sbitK1=P1^0;sbitRELAY=P2^4;延時voidDelayMS(uintms){uchart;while(ms--)for(t=0;t<120;t++);}主程序voidmain(){P1=0xff;RELAY=1;while(1){if(K1==0){while(K1==0);RELAY=~RELAY;DelayMS(20);}}}數(shù)碼管顯示撥碼開關編碼/*名稱：數(shù)碼管顯示撥碼開關編碼說明：系統(tǒng)顯示撥碼開關所設置的編碼000~255*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint各數(shù)字的數(shù)碼管段碼〔共陰〕ucharcodeDSY_CODE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};顯示緩沖ucharDSY_Buffer[3]={0,0,0};延時voidDelayMS(uintms){uchart;while(ms--)for(t=0;t<120;t++);}主程序voidmain(){20/76.uchari,m,Num;P0=0xff;P2=0xff;while(1){m=0xfe;Num=P1;//讀取撥碼開關的值DSY_Buffer[0]=Num/100;DSY_Buffer[1]=Num/10%10;DSY_Buffer[2]=Num%10;for(i=0;i<3;i++)//刷新顯示在數(shù)碼管上{m=_crol_(m,1);P2=m;P0=DSY_CODE[DSY_Buffer[i]];DelayMS(10);}}}開關控制報警器/*名稱：開關控制報警器說明：用K1開關控制報警器，程序控制P1.0輸出兩種不一樣樣頻次的聲音，模擬很傳神的報警見效*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitSPK=P1^0;sbitK1=P1^7;發(fā)聲函數(shù)voidAlarm(uchart){uchari,j;for(i=0;i<200;i++){SPK=~SPK;for(j=0;j<t;j++);//由參數(shù)t行成不一樣樣的頻次}}voidmain(){SPK=0;while(1){21/76.if(K1==1){Alarm(90);Alarm(120);}}}按鍵發(fā)音/*名稱：按鍵發(fā)音說明：按下不一樣樣的按鍵會是SOUNDER發(fā)出不一樣樣頻次的聲音。本例使用延時函數(shù)實現(xiàn)不一樣樣頻次的聲音輸出，今后也可使用準時器*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitBEEP=P3^7;sbitK1=P1^4;sbitK2=P1^5;sbitK3=P1^6;sbitK4=P1^7;延時voidDelayMS(uintx){uchart;while(x--)for(t=0;t<120;t++);}按周期t發(fā)音voidPlay(uchart){uchari;for(i=0;i<100;i++){BEEP=~BEEP;DelayMS(t);}BEEP=0;}voidmain(){P1=0xff;BEEP=0;while(1){if(K1==0)Play(1);22/76.if(K2==0)Play(2);if(K3==0)Play(3);if(K4==0)Play(4);}}播放音樂/*名稱：播放音樂說明：程序運轉時播放誕辰快樂歌，未使用準時器中止，全部頻次完滿用延時實現(xiàn)*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitBEEP=P3^7;誕辰快樂歌的音符頻次表，不一樣樣頻次由不一樣樣的延時來決定ucharcodeSONG_TONE[]={212,212,190,212,159,169,212,212,190,212,142,159,212,212,106,126,159,169,190,119,119,126,159,142,159,0};誕辰快樂歌節(jié)拍表，節(jié)拍決定每個音符的演奏長短ucharcodeSONG_LONG[]={9,3,12,12,12,24,9,3,12,12,12,24,9,3,12,12,12,12,12,9,3,12,12,12,24,0};延時voidDelayMS(uintx){uchart;while(x--)for(t=0;t<120;t++);}播放函數(shù)voidPlayMusic(){uinti=0,j,k;while(SONG_LONG[i]!=0||SONG_TONE[i]!=0){//播放各個音符，SONG_LONG為拍子長度for(j=0;j<SONG_LONG[i]*20;j++){BEEP=~BEEP;//SONG_TONE延時表決定了每個音符的頻次for(k=0;k<SONG_TONE[i]/3;k++);}DelayMS(10);i++;}}voidmain(){BEEP=0;23/76.while(1){PlayMusic();//播放誕辰快樂DelayMS(500);//播放完后暫停一段時間}}24INT0中止計數(shù)/*名稱：INT0中止計數(shù)說明：每次按下計數(shù)鍵時觸發(fā)INT0中止，中止程序累加計數(shù)，計數(shù)值顯示在3只數(shù)碼管上，按下清零鍵時數(shù)碼管清零*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedint//0~9的段碼ucharcodeDSY_CODE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00};計數(shù)值分解后各個待顯示的數(shù)位ucharDSY_Buffer[]={0,0,0};ucharCount=0;sbitClear_Key=P3^6;//數(shù)碼管上顯示計數(shù)值voidShow_Count_ON_DSY(){DSY_Buffer[2]=Count/100;//獲得DSY_Buffer[1]=Count%100/10;DSY_Buffer[0]=Count%10;if(DSY_Buffer[2]==0)//高位為{

3個數(shù)0時不顯示DSY_Buffer[2]=0x0a;if(DSY_Buffer[1]==0)

//高位為

0，假定第二位為

0相同不顯示DSY_Buffer[1]=0x0a;}P0=DSY_CODE[DSY_Buffer[0]];P1=DSY_CODE[DSY_Buffer[1]];P2=DSY_CODE[DSY_Buffer[2]];}主程序voidmain(){P0=0x00;P1=0x00;24/76.P2=0x00;IE=0x81;//贊成INT0中止IT0=1;//降落沿觸發(fā)while(1){if(Clear_Key==0)Count=0;//清0Show_Count_ON_DSY();}}//INT0中止函數(shù)voidEX_INT0()interrupt0{Count++;//計數(shù)值遞加}25外面INT0中止控制LED/*名稱：外面INT0中止控制LED說明：每次按鍵都會觸發(fā)INT0中斷，中止發(fā)生時將LED狀態(tài)取反，產生LED狀態(tài)由按鍵控制的見效*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitLED=P0^0;主程序voidmain(){LED=1;EA=1;EX0=1;IT0=1;while(1);}//INT0中止函數(shù)voidEX_INT0()interrupt0{LED=~LED;//控制LED亮滅}26INT0及INT1中止計數(shù)/*名稱：INT0及INT1中止計數(shù)說明：每次按下第1個計數(shù)鍵時，第1組計數(shù)值累加并顯示在右側3只數(shù)25/76.碼管上，

每次按下第

2個計數(shù)鍵時，第

2組計數(shù)值累加并顯示在左側

3只數(shù)碼管上，后兩個按鍵分別清零。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitK3=P3^4;//2個清零鍵sbitK4=P3^5;數(shù)碼管段碼與位碼ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};ucharcodeDSY_Scan_Bits[]={0x20,0x10,0x08,0x04,0x02,0x01};//2組計數(shù)的顯示緩沖，前3位一組，后3位一組uchardataBuffer_Counts[]={0,0,0,0,0,0};uintCount_A,Count_B=0;延時voidDelayMS(uintx){uchart;while(x--)for(t=0;t<120;t++);}數(shù)據(jù)顯示voidShow_Counts(){uchari;Buffer_Counts[2]=Count_A/100;Buffer_Counts[1]=Count_A%100/10;Buffer_Counts[0]=Count_A%10;if(Buffer_Counts[2]==0){Buffer_Counts[2]=0x0a;if(Buffer_Counts[1]==0)Buffer_Counts[1]=0x0a;}Buffer_Counts[5]=Count_B/100;Buffer_Counts[4]=Count_B%100/10;Buffer_Counts[3]=Count_B%10;if(Buffer_Counts[5]==0){Buffer_Counts[5]=0x0a;if(Buffer_Counts[4]==0)Buffer_Counts[4]=0x0a;}for(i=0;i<6;i++){P2=DSY_Scan_Bits[i];P1=DSY_CODE[Buffer_Counts[i]];26/76.DelayMS(1);}}主程序voidmain(){IE=0x85;PX0=1;//中止優(yōu)先IT0=1;IT1=1;while(1){if(K3==0)Count_A=0;if(K4==0)Count_B=0;Show_Counts();}}//INT0中止函數(shù)voidEX_INT0()interrupt0{Count_A++;}//INT1中止函數(shù)voidEX_INT1()interrupt2{Count_B++;}27準時器控制單只LED/*名稱：準時器控制單只LED說明：LED在準時器的中止例程控制下不停閃耀。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitLED=P0^0;ucharT_Count=0;主程序voidmain(){TMOD=0x00;TH0=(8192-5000)/32;

//準時器0工作方式//5ms準時

0TL0=(8192-5000)%32;IE=0x82;

//贊成

T0中止TR0=1;27/76.while(1);}//T0中止函數(shù)voidLED_Flash()interrupt1{TH0=(8192-5000)/32;//恢復初值TL0=(8192-5000)%32;if(++T_Count==100)//0.5s開關一次LED{LED=~LED;T_Count=0;}}28TIMER0控制流水燈/*名稱：TIMER0控制流水燈說明：準時器控制P0、P2口的LED轉動顯示，本例未使用中止函數(shù)。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint//主程序voidmain(){ucharT_Count=0;P0=0xfe;P2=0xfe;TMOD=0x01;TH0=(65536-40000)/256;

//準時器0工作方式//40ms準時

1TL0=(65536-40000)%256;TR0=1;

//啟動準時器while(1){if(TF0==1){TF0=0;TH0=(65536-40000)/256;//恢復初值TL0=(65536-40000)%256;if(++T_Count==5){P0=_crol_(P0,1);P2=_crol_(P2,1);28/76.T_Count=0;}}}}準時器控制4個LED轉動閃耀/*

名稱：準時器控制說明：4只LED

4個LED轉動閃耀在準時器控制下轉動閃耀。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitB1=P0^0;sbitG1=P0^1;sbitR1=P0^2;sbitY1=P0^3;uinti,j,k;//主程序voidmain(){i=j=k=0;P0=0xff;TMOD=0x02;TH0=256-200;

//準時器0工作方式//200us準時

2TL0=256-200;IE=0x82;TR0=1;

//啟動準時器while(1);}//T0中止函數(shù)voidLED_Flash_and_Scroll()interrupt1{if(++k<35)

return;

//準時中止假定干次后履行閃耀k=0;switch(i){case0:B1=~B1;break;case1:G1=~G1;break;case2:R1=~R1;break;case3:Y1=~Y1;break;default:i=0;}if(++j<300)return;//每次閃耀連續(xù)一段時間j=0;29/76.P0=0xff;//封閉顯示i++;//切換到下一個LED}T0控制LED實現(xiàn)二進制計數(shù)/*名稱：T0控制LED實現(xiàn)二進制計數(shù)說明：本例對按鍵的計數(shù)沒有使用查詢法，沒有使用外面中止函數(shù)，沒有使用準時或計數(shù)中止函數(shù)。而是啟用了計數(shù)器，連結在T0引腳的按鍵每次按下時，會使計數(shù)寄存器的值遞加，其值經過LED以二進制形式顯示*/#include<reg51.h>//主程序voidmain(){TMOD=0x05;//準時器

0為計數(shù)器，工作方式

1，最大計數(shù)值

65535TH0=0;//初值為

0TL0=0;TR0=1;

//啟動準時器while(1){P1=TH0;P2=TL0;}}31TIMER0

與

TIMER1

控制條形

LED/*

名稱：TIMER0與TIMER1控制條形說明：準時器T0準時控制上一組條形準時器T1準時控制下一組條形

LEDLED，轉動速度較快LED，轉動速度較慢*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintuchartc0=0,tc1=0;主程序voidmain(){P0=0xfe;P2=0xfe;TMOD=0x11;//準時器0、準時器30/76.1均工作于方式

1TH0=(65536-15000)/256;

//準時器

0：15msTL0=(65536-15000)%256;TH1=(65536-50000)/256;

//準時器

1：50msTL1=(65536-50000)%256;IE=0x8a;TR0=1;//啟動準時器TR1=1;while(1);}//T0中止函數(shù)voidTime0()interrupt1{TH0=(65536-15000)/256;

//恢復準時器

0初值TL0=(65536-15000)%256;if(++tc0==10)

//150ms

變換狀態(tài){tc0=0;P0=_crol_(P0,1);}}//T1中止函數(shù)voidTime1()interrupt3{TH0=(65536-50000)/256;

//恢復準時器

1初值TL0=(65536-50000)%256;if(++tc1==10)

//500ms

變換狀態(tài){tc1=0;P2=_crol_(P2,1);}}3210s的秒表/*名稱：10s的秒表說明：初次按鍵計時開始，再次按鍵暫停，第三次按鍵清零。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitK1=P3^7;uchari,Second_Counts,Key_Flag_Idx;bitKey_State;uchar31/76.DSY_CODE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};延時voidDelayMS(uintms){uchart;while(ms--)for(t=0;t<120;t++);}辦理按鍵事件voidKey_Event_Handle(){if(Key_State==0){Key_Flag_Idx=(Key_Flag_Idx+1)%3;switch(Key_Flag_Idx){case1:EA=1;ET0=1;TR0=1;break;case2:EA=0;ET0=0;TR0=0;break;case0:P0=0x3f;P2=0x3f;i=0;Second_Counts=0;}}}//主程序voidmain(){P0=0x3f;

//顯示

00P2=0x3f;i=0;Second_Counts=0;Key_Flag_Idx=0;

//按鍵次數(shù)〔取值

0，1，2，3〕Key_State=1;TMOD=0x01;TH0=(65536-50000)/256;

//按鍵狀態(tài)//準時器0方式1//準時器0：15msTL0=(65536-50000)%256;while(1){if(Key_State!=K1){DelayMS(10);Key_State=K1;Key_Event_Handle();}}}//T0中止函數(shù)voidDSY_Refresh()interrupt1{32/76.TH0=(65536-50000)/256;

//恢復準時器

0初值TL0=(65536-50000)%256;if(++i==2)

變換狀態(tài){i=0;Second_Counts++;P0=DSY_CODE[Second_Counts/10];P2=DSY_CODE[Second_Counts%10];if(Second_Counts==100)Second_Counts=0;

//滿

100〔10s〕后顯示

00}}用計數(shù)器中止實現(xiàn)100之內的按鍵計數(shù)/*

名稱：用計數(shù)器中止實現(xiàn)100之內的按鍵計數(shù)說明：本例用T0計數(shù)器中止實現(xiàn)按鍵技術，因為計數(shù)寄存器初值為P3.4引腳的每次負跳變都會觸發(fā)T0中止，實現(xiàn)計數(shù)值累加。計數(shù)器的清零用外面中止0控制。

1，所以*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedint//段碼uchar

codeDSY_CODE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00};ucharCount=0;主程序voidmain(){P0=0x00;P2=0x00;TMOD=0x06;TH0=TL0=256-1;ET0=1;EX0=1;EA=1;IP=0x02;IT0=1;

//計數(shù)器T0方式2//計數(shù)值為1//贊成T0中止//贊成INT0中止//贊成CPU中止//設置優(yōu)先級，T0高于INT0//INT0中止觸發(fā)方式為降落沿觸發(fā)33/76.TR0=1;//啟動T0while(1){P0=DSY_CODE[Count/10];P2=DSY_CODE[Count%10];}}//T0計數(shù)器中止函數(shù)voidKey_Counter()interrupt1{Count=(Count+1)%100;//因為只有兩位數(shù)碼管，計數(shù)控制在100之內〔00~99〕}//INT0中止函數(shù)voidClear_Counter()interrupt0{Count=0;}34100000s之內的計時程序/*名稱：100000s之內的計時程序說明：在6只數(shù)碼管上達成。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint段碼ucharcodeDSY_CODE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//6只數(shù)碼管上顯示的數(shù)字ucharDigits_of_6DSY[]={0,0,0,0,0,0};ucharCount;sbitDot=P0^7;延時voidDelayMS(uintms){uchart;while(ms--)for(t=0;t<120;t++);}主程序voidmain(){34/76.uchari,j;P0=0x00;P3=0xff;Count=0;TMOD=0x01;//計數(shù)器T0方式1TH0=(65536-50000)/256;//50ms準時TL0=(65536-50000)%256;IE=0x82;TR0=1;//啟動T0while(1){j=0x7f;//顯示Digits_of_6DSY[5]~Digits_of_6DSY[0]的內容//前面高位，后邊低位，循環(huán)中i!=-1亦可寫成i!=0xfffor(i=5;i!=-1;i--){j=_crol_(j,1);P3=j;P0=DSY_CODE[Digits_of_6DSY[i]];if(i==1)Dot=1;//加小數(shù)點DelayMS(2);}}}//T0中止函數(shù)voidTimer0()interrupt1{uchari;TH0=(65536-50000)/256;//恢復初值TL0=(65536-50000)%256;if(++Count!=2)return;Count=0;Digits_of_6DSY[0]++;//0.1s位累加for(i=0;i<=5;i++)//進位辦理{if(Digits_of_6DSY[i]==10){Digits_of_6DSY[i]=0;if(i!=5)Digits_of_6DSY[i+1]++;//假如0~4位那么分別向高一位進位}elsebreak;//假定某低位沒有進位，怎循環(huán)提早結束}35/76.}準時器控制數(shù)碼管動向顯示/*名稱：準時器控制數(shù)碼管動向顯示說明：8個數(shù)碼管上分兩組動態(tài)顯示年代日與時分秒，本例的位顯示延時用準時器實現(xiàn)。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint段碼,最后一位是“-〞的段碼ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf};//待顯示的數(shù)據(jù)：09-12-25與23-59-58〔分兩組顯示〕ucharcodeTable_of_Digits[][8]={{0,9,10,1,2,10,2,5},{2,3,10,5,9,10,5,8}};uchari,j=0;uintt=0;//主程序voidmain(){P3=0x80;//位碼初值TMOD=0x00;//計數(shù)器T0方式0TH0=(8192-4000)/32;//4ms準時TL0=(8192-4000)%32;IE=0x82;TR0=1;//啟動T0while(1);}//T0中止函數(shù)控制數(shù)碼管刷新顯示voidDSY_Show()interrupt1{TH0=(8192-4000)/32;//恢復初值TL0=(8192-4000)%32;P0=0xff;//輸出位碼和段碼P0=DSY_CODE[Table_of_Digits[i][j]];P3=_crol_(P3,1);j=(j+1)%8;//數(shù)組第i行的下一字節(jié)索引if(++t!=350)return;//保持刷新一段時間t=0;i=(i+1)%2;//數(shù)組行i=0時顯示年代日，i=1時顯示時分秒36/76.}368X8LED點陣顯示數(shù)字/*名稱：8X8LED點陣顯示數(shù)字說明：8X8LED點陣屏循環(huán)顯示數(shù)字0~9，刷新過程由準時器中斷達成。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintucharcodeTable_of_Digits[]={0x00,0x3e,0x41,0x41,0x41,0x3e,0x00,0x00,//00x00,0x00,0x00,0x21,0x7f,0x01,0x00,0x00,//10x00,0x27,0x45,0x45,0x45,0x39,0x00,0x00,//20x00,0x22,0x49,0x49,0x49,0x36,0x00,0x00,//30x00,0x0c,0x14,0x24,0x7f,0x04,0x00,0x00,//40x00,0x72,0x51,0x51,0x51,0x4e,0x00,0x00,//50x00,0x3e,0x49,0x49,0x49,0x26,0x00,0x00,//60x00,0x40,0x40,0x40,0x4f,0x70,0x00,0x00,//70x00,0x36,0x49,0x49,0x49,0x36,0x00,0x00,//80x00,0x32,0x49,0x49,0x49,0x3e,0x00,0x00//9};uchari=0,t=0,Num_Index;//主程序voidmain(){P3=0x80;Num_Index=0;

//從

0開始顯示TMOD=0x00;TH0=(8192-2000)/32;

//T0方式0//2ms準時TL0=(8192-2000)%32;IE=0x82;TR0=1;

//啟動

T0while(1);}//T0中止函數(shù)voidLED_Screen_Display()interrupt1{TH0=(8192-2000)/32;//恢復初值TL0=(8192-2000)%32;P0=0xff;//輸出位碼和段碼37/76.P0=~Table_of_Digits[Num_Index*8+i];P3=_crol_(P3,1);if(++i==8)i=0;//每屏一個數(shù)字由8個字節(jié)組成if(++t==250)//每個數(shù)字刷新顯示一段時間{t=0;if(++Num_Index==10)Num_Index=0;//顯示下一個數(shù)字}}按鍵控制8X8LED點陣屏顯示圖形/*名稱：按鍵控制8X8LED點陣屏顯示圖形說明：每次按下K1時，會使8X8LED點陣屏循環(huán)顯示不一樣樣圖形。本例同時使用外面中止和定時中止。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedint//待顯示圖形編碼ucharcodeM[][8]={{0x00,0x7e,0x7e,0x7e,0x7e,0x7e,0x7e,0x00},{0x00,0x38,0x44,0x54,0x44,0x38,0x00,0x00},{0x00,0x20,0x30,0x38,0x3c,0x3e,0x00,0x00}

//圖1//圖2//圖3};uchari,j;//主程序voidmain(){P0=0xff;P1=0xff;TMOD=0x01;//T0方式1TH0=(65536-2000)/256;//2ms準時TL0=(65536-2000)%256;IT0=1;//降落沿觸發(fā)IE=0x83;//贊成準時器0、外面0中止i=0xff;//i的初值設為0xff，加1后將從while(1);

0開始}//T0中止控制點陣屏顯示voidShow_Dot_Matrix()interrupt138/76.{TH0=(65536-2000)/256;//恢復初值TL0=(65536-2000)%256;P0=0xff;//輸出位碼和段碼P0=~M[i][j];P1=_crol_(P1,1);j=(j+1)%8;}//INT0中止〔準時器由鍵盤中止啟動〕voidKey_Down()interrupt0{P0=0xff;P1=0x80;j=0;i=(i+1)%3;

//i

在

0，1，2中取值，因為只需

3個圖形TR0=1;}用準時器設計的門鈴/*名稱：用準時器設計的門鈴說明：按下按鍵時蜂鳴器發(fā)出叮咚的門鈴聲。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitKey=P1^7;sbitDoorBell=P3^0;uintp=0;//主程序voidmain(){DoorBell=0;TMOD=0x00;TH0=(8192-700)/32;

//T0方式0//700us準時TL0=(8192-700)%32;IE=0x82;while(1){if(Key==0)

//按下按鍵啟動準時器{TR0=1;while(Key==0);}}}39/76.//T0中止控制點陣屏顯示voidTimer0()interrupt1{DoorBell=~DoorBell;p++;if(p<400)//假定需要拖長聲音，能夠調整400和800{TH0=(8192-700)/32;

//700us

準時TL0=(8192-700)%32;}elseif(p<800){TH0=(8192-1000)/32;

//1ms

準時TL0=(8192-1000)%32;}else{TR0=0;p=0;}}演奏音階/*名稱：演奏音階說明：本例使用準時器演奏一段音階，播放由K1控制。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitK1=P1^0;sbitSPK=P3^4;uinti=0;//音符索引//14個音符放在方式2下的準時寄存器TH0,TL0〕ucharcodeHI_LIST[]={0,226,229,232,233,236,238,240,241,242,244,245,246,247,248};ucharcodeLO_LIST[]={0,4,13,10,20,3,8,6,2,23,5,26,1,4,3};準時器0中止函數(shù)voidT0_INT()interrupt1{TL0=LO_LIST[i];TH0=HI_LIST[i];SPK=~SPK;}延時40/76.voidDelayMS(uintms){uchart;while(ms--)for(t=0;t<120;t++);}//主程序voidmain(){TMOD=0x00;

//T0

方式

0IE=0x82;SPK=0;while(1){while(K1==1);while(K1==0);for(i=1;i<15;i++){

//未按鍵等候//等候開釋TR0=1;DelayMS(500);

//播放一個音符//播放延時TR0=0;DelayMS(50);}}}按鍵控擬準時器選播多段音樂/*名稱：按鍵控擬準時器選播多段音樂說明：本例內置3段音樂，K1可啟動停止音樂播放，K2用于選擇音樂段。*/#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintsbitK1=P1^0;sbitSPK=P3^7;

//播放和停止鍵//蜂鳴器ucharSong_Index=0,Tone_Index=0;//目前音樂段索引，音符索引數(shù)碼管段碼表ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};標準音符頻次對應的延時表ucharcodeHI_LIST[]={0,226,229,232,233,236,238,240,241,242,244,245,246,247,248};ucharcodeLO_LIST[]={0,4,13,10,20,3,8,6,2,23,5,26,1,4,3};三段音樂的音符ucharcodeSong[][50]={41/76.{1,2,3,1,1,2,3,1,3,4,5,3,4,5,5,6,5,3,5,6,5,3,5,3,2,1,2,1,-1},{3,3,3,4,5,5,5,5,6,5,3,5,3,2,1,5,6,53,3,2,1,1,-1},{3,2,1,3,2,1,1,2,3,1,1,2,3,1,3,4,5,3,4,5,5,6,5,3,5,3,2,1,3,2,1,1,-1}};三段音樂的節(jié)拍ucharcodeLen[][50]={{1,1,1,1,1,1,1,1,1,1,2,1,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1,2,-1},{1,1,1,1,1,1,2,1,1,1,1,1,1,1,2,1,1,1,1,1,1,2,2,-1},{1,1,2,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,2,1,1,1,1,1,1,1,2,1,1,2,2,-1}};外面中止0voidEX0_INT()interrupt0{TR0=0;//播放結束或許播放半途切換歌曲時停止播放Song_Index=(Song_Index+1)%3;//跳到下一首的開頭Tone_Index=0;P2=DSY_CODE[Song_Index];//數(shù)碼管顯示目前音樂段號}準時器0中止函數(shù)voidT0_INT()interrupt1{TL0=LO_LIST[Song[Song_Index][Tone_Index]];TH0=HI_LIST[Song[Song_Index][Tone_Index]];SPK=~SPK;}延時voidDelayMS(uintms){uchart;while(ms--)for(t=0;t<120;t++);}//主程序voidmain(){P2=0xc0;SPK=0;TMOD=0x00;

//T0

方式

0IE=0x83;IT0=1;IP=0x02;while(1){while(K1==1);while(K1==0);TR0=1;

//未按鍵等候//等候開釋//開始播放42/76.Tone_Index=0;//從第0個音符開始//播放過程中按下K1可提早停止播放〔K1=0〕。//假定切換音樂段會觸發(fā)外面中止，致使TR0=0，播放也會停止while(Song[Song_Index][Tone_Index]!=-1&&K1==1&&TR0==1){DelayMS(300*Len[Song_Index][Tone_Index]);//播放延時〔節(jié)拍〕Tone_Index++;//目前音樂段的下一音符索引}TR0=0;//停止播放while(K1==0);//假定提早停止播放，按鍵未開釋時等候}}41準時器控制交通指示燈/*

名稱：準時器控制交通指示燈說明：東西向綠燈亮5s后，黃燈閃耀，閃耀5次亮紅燈，紅燈亮后，南北向由紅燈變?yōu)榫G燈，5s后南北向黃燈閃耀，閃耀5次后亮紅燈，東西向綠燈亮，這樣來往。*/#include<reg51.h>#defineucharunsignedchar#defineuintunsignedintsbitRED_A=P0^0;//東西向指示燈sbitYELLOW_A=P0^1;sbitGREEN_A=P0^2;sbitRED_B=P0^3;//南北向指示燈sbitYELLOW_B=P0^4;sbitGREEN_B=P0^5;延時倍數(shù)，閃耀次數(shù)，操作種類變量ucharTime_Count=0,Flash_Count=0,Operation_Type=1;準時器0中止函數(shù)vo