單片機C語言程序設計實訓100例—基于8051Proteus仿真

1、?基于8051+Proteus仿真?案例第01篇根底程序設計01 閃爍的LED/* 名稱：閃爍的LED說明：LED按設定的時間間隔閃爍*/#include<reg51.h>#define uchar unsigned char#define uint unsigned intsbit LED=P1A0;/延時void DelayMS(uint x)(uchar i;while(x-)(for(i=0;i<120;i+);)/主程序void main()(while(1)(LED=LED;DelayMS(150);)19>?UALlPanfflJEPDI/AD11日FUM

2、RZAl XLrU :J -1:P0I4/W4FOUADSPD6/MJ6RSTPQJ/AD7.：Fi.De陽詡F2JJA1DP9EMjFALEP2.4JA12由Pj.CMUP? 丁閃 5PI 0a3.omwP1.1PI 2F3.2JlhnD二£Pl.3p3 mlmJPIP3.4maPl.5P3.51T1PI 6PI.7P3.7JFCID- 二 12 蜜 1402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)依次點亮, 產(chǎn)生走 馬燈效果*/#include<reg51.h>#include<intrins.h>#defi

3、ne uchar unsigned char#define uint unsigned int /延時; U1_LII X1I I*WTalIFOOT皿陽 2rM7KT.14J2W&3加川心行而興皿ggR暗&學泗1K4JAIJF7UM1P2tAi.l4 FJ FMI >PI QWPI iF31J_PI ；7 glWFl aPD事而一Fl 4/"TOPi £PI時用鼻血而PI TH TffTvoid DelayMS(uint x)(uchar i;while(x-)(for(i=0;i<120;i+);)/主程序void main()(P0=0xf

4、e;while(1)(P0=_crol_(P0,1);/P0的值向左循環(huán)移動DelayMS(150);)03 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形成往返滾動的效果3TqiRSi叩二心2 IM P 口工心憶 帕MM* PQoykpc叩EWfi一L -Ipj 田m wn村吟E R r iTH FU®直 F3JWTtPi£JTr_ PI閑T P二忖±±±之ME CA*/#include<reg51.h>#include<intrins.h>#define uch

5、ar unsigned char#define uint unsigned int/延時void DelayMS(uint x)(uchar i;while(x-)(for(i=0;i<120;i+);)/主程序void main()(uchar i;P2=0x01;while(1)(for(i=0;i<7;i+) (P2=_crol_(P2,1);/P2的值向左循環(huán)移動 DelayMS(150);for(i=0;i<7;i+)P2=_cror_(P2,1);/P2的值向右循環(huán)移動 DelayMS(150);04把戲流水燈/* 名稱：把戲流水燈說明：16只LED分兩組 按預設

6、的多種把戲變換顯示*/#include<reg51.h>#define uchar unsigned char#define uint unsigned int uchar code Pattern_P0= MB舸mu muK>IHpl PDi*Mia 叩mm E4W KiMe5 即WM 叩3?母rFZjCLMB 用11M F7 1W1D PH.11 厲號叫堆 吃*13 用 3.1* 吃5*9MDn iffip色通而F3 3«E I nmF3i.ni 戶J班 pjrrp0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0x7f,0xff,0xff

7、,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,0x

8、df,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,

9、0xff,0x00,0xff,0x00,0xff,0x00,0xff;uchar code Pattern_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,0x

10、7f,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,

11、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void DelayMS(uint x) (uchar i;while(x-)for(i=0;i<120;i+); /主程序 void main() (uchar i;while(1)(從數(shù)組中讀取數(shù)據(jù)送至for(i=0;i<136;i+)(P0=Pattern_P0i;P2=Pattern_P2i

12、; DelayMS(100); 05 LED模擬交通燈/* 名稱：LED模擬交通燈說明：東西向綠燈亮假設干秒,黃 燈閃爍5次后紅燈亮,紅燈亮后,北向由紅燈變?yōu)榫G燈,假設干秒后南北 向黃燈閃爍5此后變紅燈,東西向變 綠燈,如此重復.*/#include<reg51.h>#define uchar unsigned char#define uint unsigned int sbit RED_A=P0A0;東西向燈sbit YELLOW_A=P0A1;sbit GREEN_A=P0A2;sbit RED_B=P0A3;南北向燈sbit YELLOW_B=P0A4;sbit GREEN_

13、B=P0A5;uchar Flash_Count=0,Operation_Type /延時P0和P2 口顯示同4HKT*U!+H±主isrP3HVIK>IlTM.- F±.*T工FUiTO mffi ,麻r 用前叼必 冷 aPJ>!AII PiAwrj p冷遇 PieAJH-d P： FIAT;閃爍次數(shù),操作類型變量void DelayMS(uint x) (uchar i;while(x-) for(i=0;i<120;i+);)交通燈切換void Traffic_Light()(switch(Operation_Type)(case 1: 東西向綠燈與

14、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;case 2: 東西向黃燈閃爍,綠燈關(guān)閉DelayMS(300);YELLOW_A=YELLOW_A;GREEN_A=1;if(+Flash_Count!=10) return; / 閃爍 5 次Flash_Count=0;Operation_Type=3;break;case 3: 東西向紅燈,南北向綠燈亮RED_A=0;YELLOW_A=1;GREEN_A=1;RED_B=1;YELLOW_

15、B=1;GREEN_B=0;DelayMS(2000);Operation_Type=4;break;case 4: 南北向黃燈閃爍 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void main()(while(1) Traffic_Light();)06單只數(shù)碼管循環(huán)顯示 09/* 名稱：單只數(shù)碼管循環(huán)顯示09說明：主程序中的循環(huán)語句反復將09的段碼送至P0 口,使數(shù)字09循環(huán)顯示*/#include<reg51.h

16、>#include<intnns.h>#define uchar unsigned char#define uint unsigned intuchar code DSY_CODE=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff;/延時void DelayMS(uint x)uchar t;while(x-) for(t=0;t<120;t+);/主程序void main()uchar i=0;P0=0x00;while(1)/*for(;i<11;i+) P0=DSY_CODEi;DelayMS(30

17、0);注:另一方案 */P0=DSY_CODEi;i=(i+1)%10;DelayMS(300); )07 8只數(shù)碼管滾動顯示單個數(shù)字/* 名稱：8只數(shù)碼管滾動顯示單個數(shù)字說明：數(shù)碼管從左到右依次滾動顯示 07,程序通過每次僅循環(huán)選通一只數(shù)碼 管*/#include<reg51.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned int忖業(yè)設Ri 2y02印融皿1 Esygs 卬后山苒 FOTJWDRST他 GALE口工317C faGA絲.眄pg offlnciP1.1pi.-um

18、cnPl JPl JP531MFTP3.4HTiPlipasrriPl 3PH第.:后=x±±il r- Muchar code DSY_CODE尸0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90; /延時void DelayMS(uint x) uchar t;while(x-) for(t=0;t<120;t+);/主程序void main()uchar i,wei=0x80; while(1) ( for(i=0;i<8;i+) ( P2=0xff; 關(guān)閉顯示 wei=_crol_(wei,1);P0=DS

19、Y_CODEi;/發(fā)送數(shù)字段碼P2=wei;發(fā)送位碼DelayMS(300); 08 8只數(shù)碼管動態(tài)顯示多個不同字符 電路如上圖 /* 名稱：8只數(shù)碼管動態(tài)顯示多個不同字符 說明：數(shù)碼管動態(tài)掃描顯示07.*/ #include<reg51.h> #include<intrins.h> #define uchar unsigned char #define uint unsigned int uchar code DSY_CODE尸0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90; /延時 void DelayMS(uin

20、t x) uchar t;while(x-) for(t=0;t<120;t+); /主程序 void main() uchar i,wei=0x80; while(1) for(i=0;i<8;i+) P2=0xff;P0=DSY_CODEi;發(fā)送段碼wei=_crol_(wei,1); P2=wei;發(fā)送位碼DelayMS(2);09 8只數(shù)碼管閃爍顯示數(shù)字串電路如上圖/* 名稱：8只數(shù)碼管閃爍顯示數(shù)字串 說明：數(shù)碼管I閃爍顯示由07構(gòu)成的一串數(shù)字本例用動態(tài)刷新法顯示一串數(shù)字,在停止刷新時所有數(shù)字顯示消失.*/#include<reg51.h>#define uch

21、ar unsigned char#define uint unsigned int/段碼表uchar code DSY_CODE尸0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90; /位碼表uchar code DSY_IDX尸0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80;/延時 void DelayMS(uint x) uchar t;while(x-) for(t=0;t<120;t+);/主程序 void main() uchar i,j; while(1) for(i=0;i<30;i+)

22、for(j=0;j<8;j+) P0=0xff; P0=DSY_CODEj;發(fā)送段碼P2=DSY_IDXj;發(fā)送位碼DelayMS(2); P2=0x00;關(guān)閉所有數(shù)碼管并延時DelayMS(1000); 10 8只數(shù)碼管滾動顯示數(shù)字串 電路如上圖/* 名稱：8只數(shù)碼管滾動顯示數(shù)字串 說明：數(shù)碼管向左滾動顯示3個字符構(gòu)成的數(shù)字串*/#include<reg51.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned int/段碼表uchar code DSY_CODE尸0xc0,0

23、xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff;/下面數(shù)組看作環(huán)形隊列,顯示從某個數(shù)開始的8個數(shù)(10表示黑屏)uchar Num尸10,10,10,10,10,10,10,10,2,9,8;/延時void DelayMS(uint x) uchar t;while(x-) for(t=0;t<120;t+);/主程序 void main() uchar i,j,k=0,m=0x80;while(1)刷新假設干次,保持一段時間的穩(wěn)定顯示for(i=0;i<15;i+)for(j=0;j<8;j+) 發(fā)送段碼,采用環(huán)形取法,從第

24、 k個開始取第j個P0=0xff;P0=DSY_CODENum(k+j)%11;m=_crol_(m,1);P2=m;發(fā)送位碼DelayMS(2); k=(k+1)%11; 環(huán)形隊列首支針 k遞增,Num下標范圍010,故對11取余 11 K1-K4 限制LED 移位/* 名稱：K1-K4限制LED移位說明：按下 K1時,P0 口 LED上移一位；按下K2時,P0 口 LED下移一位；按下K3時,P2 口 LED上移一位；按下K4時,P2 口 LED下移一位；*/#include<reg51.h>#include<intrins.h>#define uchar unsi

25、gned charXTAL3o J j3口： FlpfEptnpfplm#define uint unsigned int/延時void DelayMS(uint x)(uchar i;while(x-) for(i=0;i<120;i+);/根據(jù)P1 口的按鍵移動LEDvoid Move_LED() (if (P1&0x10)=0) P0=_cror_(P0,1);/K1else if(P1&0x20)=0) P0=_crol_(P0,1);/K2else if(P1&0x40)=0) P2=_cror_(P2,1);/K3else if(P1&0x80

26、)=0) P2=_crol_(P2,1);/K4 /主程序 void main() (uchar Recent_Key; / 最近按鍵P0=0xfe;P2=0xfe;P1=0xff;Recent_Key=0xff;while(1) (if(Recent_Key!=P1) (Recent_Key=P1;保存最近按鍵Move_LED(); DelayMS(10); 12 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按下并釋放時LED點亮,再次按下并釋放時熄滅;*/#include<reg51.h>#define uch

27、ar unsigned char#define uint unsigned intsbit LED1=P0A0;sbit LED2=P0A1;sbit LED3=P0A2;sbit LED4=P0A3;sbit K1=P1A0;sbit K2=P1A1;sbit K3=P1A2;sbit K4=P1A3;/延時void DelayMS(uint x)(uchar i;3 ,JT工. KI JL .» . . » .餐 .1 I.A il-POCUA&OxrqfarPOIAflTH叩印5 PCHWTMFtlJJACTP1.1M9Pi2MlD 隙MgP? 他3PHD P

28、l.iFH.4P2SMI3 陛MH 啕的15FUfTjjP 心沌魚瓶中mPH >5叩灑TS由6近MJ初 3H無while(x-) for(i=0;i<120;i+);)/主程序void main()(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);) 13 K1-K4 分組限制 LED /* 名稱：K1-K4分組限制LED說明：每次按下 K1時遞增點亮一只LED,全亮時再次按下那么再次循環(huán)開始

29、,K2按下后點亮上面 4只LED , K3按下后點亮下面 4只LED , K4按下后關(guān)閉所有 LEDC2 nC3UI*/#include<reg51.h>#define uchar unsigned char #define uint unsigned int /延時 void DelayMS(uint x) uchar i;while(x-) for(i=0;i<120;i+);/主程序 void main() uchar k,t,Key_State;P0=0xff;P1=0xff; while(1) t=P1; if(t!=0xff) DelayMS(10); if(t!

30、=P1) continue; 取得4位按鍵值,由模式 XXXX1111(X中有一位為0,其他均為 變?yōu)槟Ｊ?000XXXX(X 中有一位為1,其他均為0) Key_State=t>>4; k=0;/檢查1所在位置,累加獲取按鍵號kwhile(Key_State!=0) k+;Key_State>>=1; 根據(jù)按鍵號k進彳T 4種處理 switch(k) case 1:if(P0=0x00) P0=0xff;P0<<=1;DelayMS(200); break; case 2:P0=0xf0;break;case 3: P0=0x0f;break;通用.占品上

31、忸盍屋.iW千TC1T卜KtrHTRL5R0JiW3RDSiM'5 叩日回：W網(wǎng)町卬也劃Q麗rri/"禺if/未對之仄口的行pi cinun疝pi ipa/iJi®Fl 5pi jpi awrTF1 4幡iWflpusF3 5H1M hFw ea3TFil TFIT前I尸 RF".LEI>RE&.1)case 4: P0=0xff;14 K1-K4限制數(shù)碼管移位顯示/* 名稱：K1-K4限制數(shù)碼管移位顯示說明：按下 K1時加1計數(shù)并增加顯示位,按下K2時減1計數(shù)并減少顯示位, 按下K3時清零.*/#include<reg51.h>

32、#define uchar unsigned char#define uint unsigned int/段碼uchar code DSY_CODE尸0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff); /位碼uchar code DSY_Index尸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,其他黑屏)uchar Display_Buffer尸0,10,10,10,10,10,10,10;/延時void DelayMS(uint x) uchar

33、i;while(x-) for(i=0;i<120;i+);void Show_Count_ON_DSY() uchar i;for(i=0;i<8;i+) P0=0xff;RN1P0=DSY_CODEDisplay_Bufferi;P2=DSY_Indexi;DelayMS(2);/主程序void main()uchar i,Key_NO,Key_Counts=0;P0=0xff;P1=0xff;P2=0x00;while(1)11M-4Pl«Fl liTTE- Pl J*#f FJ3tf?Tiri»5W 弓皿_ FSEA*口rrShow_Count_ON_D

34、SY();I ,K>1MDrt 2aAl1Kl F4 3MO9P*WH raawBC吟M 問ww R21W.i1 f T 抬*中3*Z7J*btP1=0xff;Key_NO=P1;/P1 口按鍵狀態(tài)分別為K1-0xfe , K2-0xfd,K3-0xfbswitch(Key_NO)case 0xfe:Key_Counts+;if(Key_Counts>8) Key_Counts=8;Display_BufferKey_Counts-1=Key_Counts;break;case 0xfd:if(Key_Counts>0)Display_Buffer-Key_Counts=10

35、;break;case 0xfb:Display_Buffer0=0;for(i=1;i<8;i+) Display_Bufferi=10; Key_Counts=0;假設鍵未釋放那么僅刷新顯示,不進行鍵掃描while(P1!=0xff) Show_Count_ON_DSY();K215 K1-K4限制數(shù)碼管加減演示/* 名稱：K1-K4限制數(shù)碼管加減演示說明：按下 K1后加1計數(shù),按下 后減1計數(shù),按下K3后清零.*/#include<reg51.h>#include<intrins.h>#define uchar unsigned char#define ui

36、nt unsigned int/段碼 uchar code DSY_CODE尸0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff;/待顯示的3位緩沖uchar Num_Buffer尸0,0,0;/按鍵代碼,按鍵計數(shù)uchar Key_Code,Key_Counts=0;/延時void DelayMS(uint x)uchar i;while(x-) for(i=0;i<120;i+);顯示函數(shù)void Show_Counts_ON_DSY()uchar i,j=0x01;Num_Buffer2=Key_Counts/100;Num

37、_Buffer1=Key_Counts/10%10;Num_Buffer0=Key_Counts%10;for(i=0;i<3;i+)j=_cror_(j,1);P0=0xff;P0=DSY_CODENum_Bufferi;P2=j;DelayMS(1);)/主程序void main()uchar i;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&

38、lt;30;i+) Show_Counts_ON_DSY();switch(Key_Code) case 0xfe: if(Key_Counts<255) Key_Counts+;break;case 0xfd:if(Key_Counts>0) Key_Counts-;break;case 0xfb:Key_Counts=0;)Key_Code=0xff;)16 4X4矩陣鍵盤限制條形LED顯示田黜AL；/* 名稱：4X4矩陣鍵盤控 制條形LED顯示說明：運行本例時,按ri - 口地川：FU混淆麗 晤少工東建解心二 IM二 如£必山口和*附 陽占科4 K;刈 FZJJWi

39、TS胞所11r I'i-n7M下的按鍵值越大點亮的LED越多.*/#include<reg51.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned int /矩陣鍵盤按鍵特征碼表 uchar code KeyCodeTable尸0x11,0x12,0x14,0x18,0x21, 0x22,0x24,0x28,0x41,0x42,0x44,0x48,0x81,0x82,0x84,0x88; /延時 void DelayMS(uint x) uchar i;while(x-) f

40、or(i=0;i<120;i+);/鍵盤掃描uchar Keys_Scan() uchar sCode,kCode,i,k;/低4位置0,放入4行P1=0xf0;/假設高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+)/查表得到按鍵序號并返回if(kCode=KeyCodeTable

41、i) return(i); else sCode=_crol_(sCode,1); return(-1);/主程序void main() (uchar i,P2_LED,P3_LED;uchar KeyNo=-1;按鍵序號,-1表示無按鍵while(1)(KeyNo=Keys_Scan();掃描鍵盤獲取按鍵序號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

42、亮條形 LEDP2=P2_LED;17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：按下任意鍵時,數(shù)碼 管都會顯示其鍵的序號,掃描程 序首先判斷按鍵發(fā)生在哪一列, 然后根據(jù)所發(fā)生的行附加不同的 值,從而得到按鍵的序號.EDd WT PTJVUD *3 Jam F2 4A!2 3 i mai WFaifFnnroc：' 石電 , 燈即*/#include<reg51.h>#define uchar unsigned char#define uint unsigned int/段碼uchar code DSY_CODE=0xc0,0xf9,

43、0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90, 0x88,0x83,0xc6,0xa1,0x86,0x8e,0x00;sbit BEEP=P3A7;/上次按鍵和當前按鍵的序號,該矩陣中序號范圍 015, 16表示無按鍵uchar Pre_KeyNo=16,KeyNo=16;/延時void DelayMS(uint x)(uchar i;while(x-) for(i=0;i<120;i+);)/矩陣鍵盤掃描void Keys_Scan()(uchar Tmp;P1=0x0f; 高4位置0,放入4行DelayMS(1);Tmp=P1A0x0f;/按鍵后0f

44、變成0000XXXX , X中一個為0, 3個仍為1,通過異或把 3個1變?yōu)?,唯 一的0變?yōu)?switch(Tmp) 判斷按鍵發(fā)生于 03歹U的哪一列J (case 1: KeyNo=0;break;case 2: KeyNo=1;break;case 4: KeyNo=2;break;case 8: KeyNo=3;break;default:KeyNo=16;/ 無鍵按下)P1=0xf0; 低4位置0,放入4列DelayMS(1);Tmp=P1>>4A0x0f;/按鍵后f0變成XXXX0000 , X中有1個為0,三個仍為1;高4位轉(zhuǎn)移到低4位并 異或得到改變的值switch

45、(Tmp) /對03行分別附加起始值 0, 4, 8, 12 (case 1: KeyNo+=0;break;case 2: KeyNo+=4;break;case 4: KeyNo+=8;break;case 8: KeyNo+=12; )蜂鳴器void Beep()(uchar i;for(i=0;i<100;i+)(DelayMS(1);BEEP=BEEP;)BEEP=0;)/主程序void main()(P0=0x00;BEEP=0;while(1)(P1=0xf0;if(P1!=0xf0) Keys_Scan();/ 獲取鍵序號if(Pre_KeyNo!=KeyNo)(P0=D

46、SY_CODEKeyNo;Beep();Pre_KeyNo=KeyNo;)DelayMS(100);)18 開關(guān)限制LED/* 名稱：開關(guān)限制 LED說明：開關(guān)S1和S2分別控制 LED1 和 LED2.*/#include<reg51.h>sbit S1=P1A0;sbit S2=P1A1；sbit LED1=P0A0;sbit LED2=P0A1;/主程序void main()(while(1)(LED1=S1;LED2=S2;)19繼電器限制照明設備/* 名稱：繼電器限制照明設備說明：按下K1燈點亮,再次按下時燈熄滅*/#include<reg51.h>#defi

47、ne uchar unsigned char#define uint unsigned int Q1.2g 4 客后.7P15"S"P1叫P1叫叫EMM PcniMin po.二 FO.jrAM Ffl Fd.yyxDS PO.WiDfl rn'rA&FPiQ&OV =2TI P2泌19 P2 4居以 Pl&Arl P2 3事 PlfW5P3.T/D© 加麗而" x.miTmP34HO .即P3三殛 PBTJfOAajCuaDQ 5allwm鈍.癡4由anm*3.73/力口maF3 1總守P2 型MO號P2.W1以工

48、63;1 JEfcF2 Ml4P2 T.m.15Ml DpsnkKbFli 1H 1ED5 3FSitfnrp|i Pli嗎P3聞卬0Fl 5F4l ?嚏.生金£,三葺±±三 一±_-tL2NOVIsbit K1=P1A0;sbit RELAY=P2A4;/延時void DelayMS(uint ms)uchar t;while(ms-)for(t=0;t<120;t+);/主程序void main()P1=0xff;RELAY=1;while(1)(if(K1=0)(while(K1=0);RELAY=RELAY;DelayMS(20);)20數(shù)

49、碼管顯示撥碼開關(guān)編碼D(SWlHCT*LIXTjuJ?國I,喝M 爾居口！ POWW Ki FQ4JAPI 叫,叫D5 PO FCL7MC7耐/* 名稱：數(shù)碼管顯示撥碼開關(guān)編碼說明：系統(tǒng)顯示撥碼開關(guān)所設置的編碼000255*/#include<reg51.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned int/各數(shù)字的數(shù)碼管段碼(共陰)uchar code DSY_CODE=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f);顯示

50、緩沖uchar DSY_Buffer3=0,0,0;/延時void DelayMS(uint ms) uchar t;while(ms-)for(t=0;t<120;t+);/主程序void main()0注定P2赳威 同期Ml P:桃 1： 心勁d? F !器k /T7-M'Blnz-Bj/Eljwuchar i,m,Num;P0=0xff;P2=0xff;while(1)(m=0xfe;Num=P1; /讀取撥碼開關(guān)的值DSY_Buffer0=Num/100;DSY_Buffer1=Num/10%10;DSY Buffer2=Num%10;for(i=0;i<3;i+)刷新顯示在數(shù)碼官上( m=_crol_(m,1); P2=m;P0=DSY_CODEDSY_Bufferi; DelayMS(10);)21開關(guān)限制報警器/* 名稱：開關(guān)限制報警器±±±J+kNTMl叫FD.-lJttEd時.足心 叫&g