1、實驗一 發光二極管流水燈實驗一、實驗目的：1.通過AT89C51單片機控制8個發光二極管，八個發光二極管分別接在單片機的P0.0P0.7接口上，輸出“0”時，發光二極管亮。開始時P0.0P0.1.P0.7，實現亮點以1HZ頻率循環移動。2.用PROTEUS 設計，仿真以AT89C51為核心的發光二極管流水燈實驗裝置。3.掌握發光二極管的控制方法。二、PROTEUS電路設計：三、程序部分#includesbit control = P37;void delay(int z)int x,y;for(x=z;x0;x-)for(y=110;y0;y-);void main()int i,tmp;co

2、ntrol = 0;P0 = 0xef;delay(1000);for(i=1;i1)+ 0x80;delay(1000);實驗二 開關控制LED數碼管實驗一、實驗目的：1.通過AT89C51讀入4位開關K1、K2、K3、K4的輸入狀態，并按照二進制編碼關系0-F輸出到數碼管顯示。（如K4K3K2K1全部按下，則顯示F；若只有K2按下，則顯示2。）2.掌握LED數碼管的靜態顯示。3.掌握I/O口的控制方法。二、PROTEUS電路設計：三、程序部分#includeunsigned char table=0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x

3、90,0x88,0x83,0xC6,0xA1,0x86,0x8E,;unsigned char KEY;void main()while(1)KEY = P2;switch(KEY)case 0xff:P0 = table0;break;case 0xfe:P0 = table1;break;case 0xfd:P0 = table2;break;case 0xfc:P0 = table3;break;case 0xfb:P0 = table4;break;case 0xfa:P0 = table5;break;case 0xf9:P0 = table6;break;case 0xf8:P0

4、= table7;break;case 0xf7:P0 = table8;break;case 0xf6:P0 = table9;break;case 0xf5:P0 = table10;break;case 0xf4:P0 = table11;break;case 0xf3:P0 = table12;break;case 0xf2:P0 = table13;break;case 0xf1:P0 = table14;break;case 0xf0:P0 = table15;break;default :break;實驗三 外中斷優先級實驗一、實驗目的：1.理解單片機中斷優先級和優先權。2.用P

5、ROTEUS 設計，仿真基于AT89C51單片機的中斷優先級實驗。3.掌握中斷編程方法。單片機主程序控制P0口數碼管循環顯示08；外中斷0、外中斷1發生時分別在P2口、P1口依次顯示08。通過實驗可演示高優先級可中斷低優先級，但低優先級的中斷請求不能中斷高優先級。二、PROTEUS電路設計：三、程序部分#includeunsigned char code table=0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80;/ 共陽數碼管的段碼void delay(int z) /延時子程序，大約1msint x,y;for(x=110;x0;x-)for(y=

6、z;y0;y-);int i0=0,i1=0;/ 用于中斷0,1顯示數碼管的變量void main()int i;EX0 = 1;/開外部中斷0EX1 = 1;/開外部中斷1IT0 = 1;IT1 = 1;PX0 = 1;PX1 = 0;EA = 1;/開總中斷while(1)for(i=0;i9;i+)/P0 循環顯示08P0 = tablei;delay(200);void int0()interrupt 0 / 外部中斷0優先級高于外部中斷1 ，中斷號為 0for(i0=0;i09;i0+) /顯示08 P2 = tablei0;delay(200); void int1()interr

7、upt 2 /外部中斷1，中斷號為2for(i1=0;i19;i1+) /顯示08 P1 = tablei1;delay(200);實驗四 60S倒計時實驗一、實驗目的：1.通過AT89C51的定時器實現60S倒計時，顯示采用兩位數碼管動態顯示。2.用PROTEUS 設計，仿真基于AT89C51單片機的60S倒計時實驗。二、PROTEUS電路設計：三、程序部分#include sbit GE = P21; sbit SHI = P20; int count = 0,number = 60; unsigned char code table=0xC0,0xF9,0xA4,0xB0,0x99,0x

8、92,0x82,0xF8, 0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E; void delay(int z); void display(); void main() EA = 1; ET0 = 1; TMOD = 0X01; TH0 = (65536-50000)/256; TL0 = (65536-50000)%256; TR0 = 1; while(1) display(); void delay(int z) int x,y; for(x=110;x0;x-) for(y=z;y0;y-); void display() SHI = 0; GE =

9、1;P1 = tablenumber%10;delay(10);GE = 0;SHI = 1;P1 = tablenumber/10;delay(10); void time_count() interrupt 1 TH0 = (65536-50000)/256; TL0 = (65536-50000)%256; count+; if(count = 20) count = 0; number-;if(number 0)number = 59; 實驗五 矩陣式鍵盤的設計一、實驗目的：1.掌握鍵盤設計中按鍵識別的原則。2.用PROTEUS 設計一個常規44的矩陣鍵盤。3.鍵盤編碼規則自己定義，分

10、別對應數字鍵0-9、A-F，按下對應的按鍵顯示在數碼管上顯示對應的數據。二、PROTEUS電路設計：三、程序部分#includesbit show_1 = P10;sbit show_2 = P11;sbit show_3 = P12;sbit show_4 = P13;unsigned char j,k,temp,key;unsigned char code table=0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,;void delay(unsigned char i);voi

11、d display(unsigned char num);void key_scan();void main() while(1) key_scan(); display(key); void delay(unsigned char i) for(j=i;j0;j-) for(k=110;k0;k-);void display(unsigned char num) P0=tablenum; show_4 = 0;void key_scan()P2=0xef; temp=P2; temp=temp&0x0f; if(temp!=0x0f) delay(10); if(temp!=0x0f) te

12、mp=P2; switch(temp) case 0xe7: key=0; break; case 0xeb: key=1; break; case 0xed: key=2; break; case 0xee: key=3; break; while(temp!=0x0f) temp=P2; temp=temp&0x0f; display(key); P2=0xdf; temp=P2; temp=temp&0x0f; if(temp!=0x0f) delay(10); if(temp!=0x0f) temp=P2; switch(temp) case 0xd7: key=4; break; c

13、ase 0xdb: key=5; break; case 0xdd: key=6; break; case 0xde: key=7; break; while(temp!=0x0f) temp=P2; temp=temp&0x0f; display(key); P2=0xbf; temp=P2; temp=temp&0x0f; if(temp!=0x0f) delay(10); if(temp!=0x0f) temp=P2; switch(temp) case 0xb7: key=8; break; case 0xbb: key=9; break; case 0xbd: key=10; bre

14、ak; case 0xbe: key=11; break; while(temp!=0x0f) temp=P2; temp=temp&0x0f; display(key); P2=0x7f; temp=P2; temp=temp&0x0f; if(temp!=0x0f) delay(10); if(temp!=0x0f) temp=P2; switch(temp) case 0x77: key=12; break; case 0x7b: key=13; break; case 0x7d: key=14; break; case 0x7e: key=15; break; while(temp!=

15、0x0f) temp=P2; temp=temp&0x0f; display(key); 實驗六 AD轉換程序設計一、實驗目的：1.掌握轉換器ADC0809的使用。2.用PROTEUS 設計，仿真基于AT89C51單片機的A/D轉換實驗。3.通過改變電位器的值改變模擬量的輸入，經轉換為數字量在LED上顯示，比對模擬量和數字量的關系。二、PROTEUS電路設計：三、程序部分#includesbit OE = P31;sbit START = P33;sbit NUM_1 = P34;sbit NUM_2 = P35;sbit NUM_3 = P36;sbit NUM_4 = P37;sbit d

16、p = P17;unsigned char code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;unsigned int date;void show();void delay(int z)int x,y;for(x=z;x0;x-)for(y=110;y0;y-); void main()EX0 = 1;IT0 = 1;EA = 1; START = 0;START = 1;START = 0;while(1);void over() interrupt 0OE

17、 = 1;date = P0;OE = 0;show();START = 0;START = 1;START = 0;void show()NUM_3 = 1;NUM_2 = 1;P1=tabledate/51;dp = 1;NUM_1 = 0;delay(5);NUM_1 = 1;P1=tabledate%51*100/51/10;NUM_2 = 0;delay(5);NUM_2 = 1;P1=tabledate%51*100/51%10;NUM_3 = 0;delay(5);實驗七 雙機通信實驗一、實驗目的：1.掌握單片機串口通信程序的設計。2.了接RS232接口通信的特點。3.雙機通信：分別把接收到的對方通過邏輯開關輸入的信息在本地數碼管上顯示，如下圖甲機的邏輯開關數據為81H，乙機通過串口接收該數據并數碼關管顯示，而甲機顯示乙機發送的數據88H。二、PROTEUS電路設計：三、程序部分#includevoid init()TMOD = 0X20;