单片机程序源代码

1、页眉内容第二章任务一：闪烁广告灯的设计利用89c51单片机的端口控制两个LED(D0和D1)，编写程序，实现两个LED互闪。#include<reg52.h>#defineuintunsignedint#defineucharunsignedcharsbitLED1=P0A0;sbitLED2=P0A1;voiddelayms(uintms)uinti;while(ms-)for(i=0;i<120;i+);voidmain()while(1)LED1=0;LED2=1;delayms(500);LED1=1;LED2=0;delayms(500);任务二：流水广告灯的设计利

2、用89c51单片机的端口控制8个LED(D0D7)循环点亮，刚开始时D0点亮，延时片刻后，接着D1点亮，然后依次点亮D2->D3->D4->D5->D6->D7，然后再点亮D7->D6->D5->D4->D3->D2->D1->D0，重复循环。#include<reg52.h>#include<intrins.h>#defineuintunsignedint#defineucharunsignedcharuinti;uchartemp;uinta8=0xfe,0xfd,0xfb,0xf7,0xef,

3、0xdf,0xbf,0x7f;voiddelayms(uintms)while(ms-)uintj;for(j=0;j<120;j+);voidmain()while(1)P0=0xfe;while(P0!=0x7f)/P1=temp;/delayms(500);P0=_crol_(P0,1);delayms(250);temp=0x7f;while(P0!=0xfe)P0=temp;delayms(500);temp=_cror_(temp,1);任务三：拉幕式与闭幕式广告灯的设计利用89c51单片机的P0端口实现8个LEDD0D7的拉幕式与闭幕式广告灯设计。拉幕式：开始D0D7全灭，

4、延时片刻后首先D3和D4亮，其次是D2和D5亮，再是D1和D6亮，最后是D0和D7亮。闭幕式：开始D0D7全亮，延时片刻后首先D0和D7灭，其次是D1和D6灭，再是D2和D5灭，最后是D3和D4灭。#include<reg52.h>#defineuintunsignedint#defineucharunsignedcharucharcodetable=0xe7,0xc3,0x81,0x00;voiddelay(uintx)uinti,j;for(i=x;i>0;i-)for(j=120;j>0;j-);voidmain()uinti;while(1)P1=0xff;de

5、lay(500);for(i=0;i<4;i+)P1=tablei;delay(500);for(i=3;i>0;i-)P1=tablei-1;delay(500);任务四：复杂广告灯的设计利用89c51单片机的端口实现8个LED(D0D7)复杂广告灯的控制，要求显示规律为：正向流水->反向流水->隔灯闪烁3次->高四盏、低四盏闪烁2次->隔两盏闪烁3次，再重复循环。#include<reg52.h>#defineuintunsignedint#include<intrins.h>voiddelayms(uintms)uinti;wh

6、ile(ms-)for(i=0;i<110;i+);voidmain()uinti,j,xx2=0xaa,0xff,yy2=0xf0,0x0f,zz2=0xb6,0xff;unsignedcharaa;while(1)aa=0xfe;for(i=0;i<7;i+)P0=aa;aa=_crol_(aa,1);delayms(500);for(i=0;i<8;i+)P0=aa;aa=_cror_(aa,1);delayms(500);for(i=0;i<3;i+)for(j=0;j<2;j+)P0=xxj;delayms(500);for(i=0;i<2;i+)

7、for(j=0;j<2;j+)P0=yyj;delayms(500);for(i=0;i<3;i+)for(j=0;j<2;j+)P0=zzj;delayms(500);任务五：单个LED数码管显示设计09使用89c51的P0口作为输出口，外接LED数码管，编写程序，使数码管循环显示从的加1计数。#include<reg52.h>#defineuintunsignedint#defineucharunsignedcharuchartable10=0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90;uintkey=0;

8、voidint_int()EA=1;IT0=1;EX0=1;voidcount_num()interrupt0if(key=9)key=0;elsekey+;voidmain()int_int();while(1)P0=tablekey;任务六：多个LED数码管显示设计使用单片机P0和P2口作为输出口，外接一个8位LED数码管，编写程序，使数码管显示“872AF635。”#include<reg52.h>#include<intrins.h>#defineuintunsignedint#defineucharunsignedchardelay(ms)while(ms-)

9、inti;for(i=0;i<110;i+);main()uchara16=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;ucharb8=0x08,0x07,0x02,0x0a,0x0f,0x06,0x03,0x05,j;uinti;while(1)j=0x01;for(i=0;i<8;i+)P2=j;P0=abi;j=_crol_(j,1);delay(3);任务七：查询式按键设计将8个按键从18进行编号，如果其中一个键被按下，则在LED数码管上显示相应的键值。#in

10、clude<reg52.h>#defineuintunsignedint#defineucharunsignedcharmain()uchara16=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;P0=0xff;while(P0!=0xff)switch(P0)case0xfe:P2=a1;break;case0xfd:P2=a2;break;case0xfb:P2=a3;break;case0xf7:P2=a4;break;case0xef:P2=a5;break;c

11、ase0xdf:P2=a6;break;case0xbf:P2=a7;break;case0x7f:P2=a8;任务八：LED数码管显示矩阵键盘按键的设计设计一个4*4的矩阵键盘，以P1.0P1.3作为行线，以P1.4P1.7作为列线。要求：未按下按键时，LED数码管显示“-”，按下按键时，在数码管上显示相应的键值。#include<reg52.h>#defineucharunsignedchar#defineuintunsignedintuchartable17=0xbf,0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88

12、,0x83,0xc6,0xa1,0x86,0x8e;uintnum=0;voiddelay(uintx)uchari,j;for(i=x;i>0;i-)for(j=120;j>0;j-);keyscan()uinttemp;temp=P2;temp&=0x0f;if(temp=0x0e)P2=0xf0;temp=P2;temp&=0xf0;switch(temp)case0xe0:num=1;break;case0xd0:num=2;break;case0xb0:num=3;break;case0x70:num=4;if(temp=0x0d)P2=0xf0;temp

13、=P2;temp&=0xf0;switch(temp)case0xe0:num=5;break;case0xd0:num=6;break;case0xb0:num=7;break;case0x70:num=8;if(temp=0x0b)P2=0xf0;temp=P2;temp&=0xf0;switch(temp)case0xe0:num=9;break;case0xd0:num=10;break;case0xb0:num=11;break;case0x70:num=12;if(temp=0x07)P2=0xf0;temp=P2;temp&=0xf0;switch(tem

14、p)case0xe0:num=13;break;case0xd0:num=14;break;case0xb0:num=15;break;case0x70:num=16;returnnum;voiddisplay(uintnum)if(num=0)P0=0xbf;P0=tablenum;main()uinttemp;while(1)P2=0x0f;temp=P2;if(temp!=0x0f)keyscan();display(num);(2)#include<reg52.h>#defineucharunsignedchar#defineuintunsignedintsbitLED1=

15、P2A0;sbitLED2=P2A1；ucharnum;ucharcodeLED_code=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;/数码管字形码编码voiddelay(uintx)uchari,j;for(i=x;i>0;i-)for(j=120;j>0;j-);/延时函数voiddisplay(ucharnum)P0=LED_codenum;/数码管显示函数voidkeyscan()/键盘扫描函数uchartemp;P1=0xfe;/key1-key4第一行按

16、下temp=P1;temp&=0xf0;if(temp!=0xf0)delay(10);/消除抖动temp=P1;temp&=0xf0;if(temp!=0xf0)temp=P1;switch(temp)case0xee:num=1;break;case0xde:num=2;break;case0xbe:num=3;break;case0x7e:num=4;break;while(temp!=0xf0)/等待按键释放temp=P1;temp&=0xf0;P1=0xfd;/key5-key8第二行按下temp=P1;temp&=0xf0;if(temp!=0xf0

17、)delay(10);/消除抖动temp=P1;temp&=0xf0;if(temp!=0xf0)temp=P1;switch(temp)case0xed:num=5;break;case0xdd:num=6;break;case0xbd:num=7;break;case0x7d:num=8;break;while(temp!=0xf0)/等待按键释放temp=P1;temp&=0xf0;P1=0xfb;/key9-key12第三行按下temp=P1;temp&=0xf0;if(temp!=0xf0)delay(10);/消除抖动temp=P1;temp&=0x

18、f0;if(temp!=0xf0)temp=P1;switch(temp)case0xeb:num=9;break;case0xdb:num=10;break;case0xbb:num=11;break;case0x7b:num=12;break;while(temp!=0xf0)/等待按键释放temp=P1;temp&=0xf0;P1=0xf7;/key13-key16第四行按下temp=P1;temp&=0xf0;if(temp!=0xf0)delay(10);/消除抖动temp=P1;temp&=0xf0;if(temp!=0xf0)temp=P1;switch(

19、temp)case0xe7:num=13;break;case0xd7:num=14;break;case0xb7:num=15;break;case0x77:num=16;break;while(temp!=0xf0)/等待按键释放temp=P1;temp&=0xf0;voidmain()while(1)keyscan();if(num=0)P0=0xbf;elsedisplay(num-1);任务九：简单拨号键盘的设计使用4*4的矩阵式键盘及8位共阳极LED数码管设计一个简单拨号键盘，要求在初始状态时，8位数码管均显示“-”，每按下一个号码后，原8位LED数码管显示的内容向左移动位

20、。#include<reg52.h>#include<intrins.h>#defineuintunsignedint#defineucharunsignedcharucharkeycount=0,num;ucharcodeLED1_code=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;/数码管字形码编码ucharLED2_duan8=0xbf,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf;/8段共阳数码管编码ucharLED2_w

21、ei8=0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01;voiddelay(uintx)uchari,j;for(i=x;i>0;i-)for(j=120;j>0;j-);voiddisplay()uchari;/P2=0x80;for(i=0;i<8;i+)P2=LED2_weii;P0=LED2_duan7-i;delay(1);voidkeyscan()uchartemp;P3=0xfe;temp=P3;temp&=0xf0;if(temp!=0xf0)delay(10);temp=P3;temp&=0xf0;if(tem

22、p!=0xf0)temp=P3;switch(temp)case0xee:keycount+;num=0;break;case0xde:keycount+;num=1;break;case0xbe:keycount+;num=2;break;case0x7e:keycount+;num=3;break;while(temp!=0xf0)temp=P3;temp&=0xf0;P3=0xfd;temp=P3;temp&=0xf0;if(temp!=0xf0)delay(10);temp=P3;temp&=0xf0;if(temp!=0xf0)temp=P3;switch(t

23、emp)case0xed:keycount+;num=4;break;case0xdd:keycount+;num=5;break;case0xbd:keycount+;num=6;break;case0x7d:keycount+;num=7;break;while(temp!=0xf0)temp=P3;temp&=0xf0;P3=0xfb;temp=P3;temp&=0xf0;if(temp!=0xf0)delay(10);temp=P3;temp&=0xf0;if(temp!=0xf0)temp=P3;switch(temp)case0xeb:keycount+;n

24、um=8;break;case0xdb:keycount+;num=9;break;case0xbb:keycount+;num=10;break;case0x7b:keycount+;num=11;break;while(temp!=0xf0)temp=P3;temp&=0xf0;P3=0xf7;temp=P3;temp&=0xf0;if(temp!=0xf0)delay(10);temp=P3;temp&=0xf0;if(temp!=0xf0)temp=P3;switch(temp)case0xe7:keycount+;num=12;break;case0xd7:k

25、eycount+;num=13;break;case0xb7:keycount+;num=14;break;case0x77:keycount+;num=15;break;while(temp!=0xf0)temp=P3;temp&=0xf0;voidmain()uchari;while(1)display();keyscan();if(keycount!=0)for(i=0;i<7;i+)LED2_duani=LED2_duani+1;LED2_duan7=LED1_codenum;keycount=0;第五章任务一：带中断控制的LED花样灯P3.2 外接按键 K。 编写程序，

26、 当 K 未按下时， 8只 LED->右移流水-> 隔灯闪烁3 次花样显示； 如果按下 K 键5 次后，继续按默认规律显示。P0端口作为输出口，外接8只LED，进行默认显示，其显示规律为左移流水后，8只LED暂停默认显示，而进行闪烁显示，当显示达到#include<reg52.h>#defineuintunsignedint#defineucharunsignedcharuintLED_table14=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd;voiddelayms(uin

27、tms)uinti;while(ms-)for(i=0;i<120;i+);voidint_int()EA=1;EX0=1;IT0=1;voidLED_shan()interrupt0uintk;for(k=0;k<5;k+)P0=0xaa;delayms(500);P0=0xff;delayms(500);voidmain()int_int();while(1)uinti;for(i=0;i<14;i+)P0=LED_tablei;delayms(500);for(i=0;i<3;i+)P0=0xaa;delayms(500);P0=0xff;delayms(500)

28、;任务二：采用外中断控制的条形LED彩灯设计P0端口作为输出口，外接条形LED。编写程序，当按键K未按下时，LED进行循环左移显示。如果第1次按下按键K后，LED进行循环右移显示。如果第2次按下按键K后，LED进行拉幕式与闭幕式花样显示。如果第3次按下按键K后，又恢复循环左移显示。#include<reg52.h>unsignedcharflag=0;/状态标志位unsignedcharled=0;/LED映射位unsignedchartable=/花样数组0x00,0x81,0xc3,0xe7,0xff,0xe7,0xc3,0x81;/先闭幕式再开幕式voiddelayms(un

29、signedintms);/延时函数voidsysInit(void);/系统初始化voidstep0(void);/状态0voidstep1(void);/状态1voidstep2(void);/状态2voidmain(void)sysInit();/初始化系统while(1)switch(flag)case0:step0();break;case 1: step1();break;case 2: step2();break;default:break;P0=led;/将led值映射到LED灯delayms(500);/延时500msvoiddelayms(unsignedintms)uns

30、ignedchari;for(;ms;ms-)for(i=110;i;i-);voidsysInit(void)EX0=1;/打开外部中断0EA=1;/打开总中断IT0=1;/外部中断0下降沿触发voidstep0(void)led<<=1;/左移if(led=0)/溢出处理led=0x01;voidstep1(void)led>>=1;/右移if(led=0)/溢出处理led=0x80;voidstep2(void)staticchart;led=tablet+;/开幕闭幕花样显示if(t=8)t=0;voidEX_0()interrupt0/外部中断0服务函数fla

31、g+;if(flag=3)flag=0;(2)#include<reg52.h>/头文件#defineucharunsignedchar#defineuintunsignedint/宏定义uchartemp,key_count;ucharcodetab=/开幕式闭幕式编码0x00,0x81,0xc3,0xe7,0xff,0xe7,0xc3,0x81;voiddelay(uintms)/延时子函数uinti,j;for(i=ms;i>0;i-)for(j=0;j<110;j+);voidloop_leftmove()temp=temp<<1;if(temp=0

32、)temp=0x01;voidloop_rightmove()temp=temp>>1;if(temp=0)temp=0x80;voidopen_close()ucharcount;temp=tabcount;count+;if(count>=8)count=0;voidinit()EA=1;EX0=1;IT0=1;temp=0;key_count=0;voidmain()init();while(1)switch(key_count)case0:loop_leftmove();break;case1:loop_rightmove();break;case2:open_clo

33、se();break;default:break;P0=temp;delay(250);voidkey_interrupt()interrupt0/外部中断INT0中断服务程序key_count+;key_count%=3;/*if(key_count=3)key_count=0;*/任务三：采用两个外中断的LED彩灯控制P0端口作为输出口，外接8只LED,P3.2外接按键K1,P3.3外接按键K2。编写程序，没有按下任何按键时，LED隔灯闪烁，当按键K1为奇数次时，LED进行左移流水->右移流水显示。当按下按键K1为偶数次时，LED进行拉幕式显示；当按下按键K2时，LED暂停显示，蜂鸣

34、器发出“叮咚”的开门声音，然后LED继续花样显示(K2按键优先)。#include<reg52.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintsbitkey1=P3A2;sbitkey2=P3A3;sbitbeep=P1A0;ucharcodetab=0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7;/开幕式编码uchartemp=0x01,key_count,flag,right,beep_FG;voiddelay(uintms)uinti,j;for

35、(i=ms;i>0;i-)for(j=110;j>0;j-);voidinit()EA=1;/打开总中断EX0=1;/打开外部中断INT0EX1=1;/打开外部中断INT1IT0=1;/下降沿触发方式IT1=1;/下降沿触发方式PX0=0;/设置INT0为低中断优先级PX1=1;/设置INT1为高中断优先级voidinterval_LED()P0=0xff;delay(500);P0=0xaa;delay(500);voidleft_right_move()if(!right)temp=_crol_(temp,1);elsetemp=_cror_(temp,1);if(temp=0

36、x01)right=0;if(temp=0x80)right=1;voidopen_LED()ucharcount;temp=tabcount+;if(count=8)count=0;voidBeep()uchari,j,k;for(i=100;i;i-)for(j=20;j;j-)for(k=1000;k;k-)beep=beep;/*for(i=100;i;i-)for(j=200;j;j-)for(k=1000;k;k-)beep=beep;*/beep_FG=0;voidmain()init();beep=0;while(1)if(!flag)interval_LED();elseif

37、(beep_FG)Beep();elseswitch(key_count%2)case1:left_right_move();break;奇数次按键左移右移显示case0:open_LED();break;偶数次按键拉幕式显示default:break;P0=temp;delay(400);voidkey1_interrupt()interrupt0flag=1;key_count+;voidkey2_interrupt()interrupt2flag=1;beep_FG=1;任务四：采用两个外中断实现LED键控移位P0端口作为输出口，外接8只LED,P3.2外接按键K1,P3.3外接按键K2

38、。编写程序，要求实现LED键控移位，按下按键K1时，8只LED左移1位；按下按键K2时，8只LED右移1位。#include<reg52.h>#include<intrins.h>#defineuintunsignedint#defineucharunsignedcharucharkey1=0,key2=0,temp1=0,temp2=0,temp11=0,temp12=0;/*voiddelayms(uintms)uinti;while(ms-)for(i=0;i<120;i+);*/voidint_int()EA=1;EX0=1;EX1=1;IT0=1;IT1

39、=1;voidint0()interrupt0key1+;voidint1()interrupt2key2+;voidmain()uchara;int_int();a=0xfe;while(1)if(temp1!=key1)P0=a;a=_crol_(a,1);temp1=key1;if(temp2!=key2)P0=a;a=_cror_(a,1);key2=temp2;(2)#include<reg52.h>#defineuintunsignedint#defineucharunsignedcharucharkey1=0,key2=0,m,n,k;uchartable=0xfe,

40、0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f;voidint_int()EA=1;EX0=1;IT0=1;EX1=1;IT1=1;voidint0()interrupt0key1+;m=key1%8;voidint2()interrupt2key2+;n=key2%8;voidmain()int_int();while(1)k=(m-n+8)%8;P0=tablek;任务五：采用外中断实现计数使用单片机P0、P2端口作为输出口，外接一个2位LED数码管，P3.2外接按键K1，P3.3页眉内容K2外接按键K2。编写程序，每次按下K1时，LED数码管进行加1显示；每次按下按

41、键时，LED数码管进行减1显示，计数范围为099。#include<reg52.h>/头文件#defineuintunsignedint/宏定义#defineucharunsignedchar/宏定义uchartable=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90;/0-9共阳字型码编码charcount=0;ucharshi,ge;voidLED_scan()/数码管扫描子函数shi=count/10;/分离十位ge=count%10;/分离个位P2=tablege;/显示个位P0=tableshi;/显示十位voidint

42、_int()/初始化EA=1;/打开总中断EX0=1;/打开外部中断0EX1=1;/打开外部中断1IT0=1;/设置下降沿触发方式IT1=1;/设置下降沿触发方式voidmain()/主函数int_int();/调用初始化函数while(1)LED_scan();/调用数码管扫描函数voidint0()interrupt0/外部中断0服务程序count+;if(count=100)count=0;voidint2()interrupt2count-;if(count<0)count=99;/计数加1/溢出操作/外部中断1服务程序/计数减1/溢出操作页眉内容(2)#include<r

43、eg52.h>/头文件#defineuintunsignedint/宏定义#defineucharunsignedchar/宏定义uchartable=0xc0,0xf9,0xa4,0xb0,0x99,共阳字型码编码0x92,0x82,0xf8,0x80,0x90;/0-9charcount=0;ucharshi,ge;voiddelay(uintms)/延时子函数uchari;for(;ms;ms-)for(i=120;i;i-);voidLED_scan()/数码管扫描子函数shi=count/10;/分离十位ge=count%10;/分离个位P2=0x01;/个位对应的数码管点亮P

44、0=tablege;/显示个位delay(1);P2=0x02;/十位对应的数码管点亮P0=tableshi;/显示十位delay(1);voidint_int()/初始化EA=1;/打开总中断EX0=1;/打开外部中断0EX1=1;/打开外部中断1IT0=1;/设置下降沿触发方式IT1=1;/设置下降沿触发方式voidmain()/主函数int_int();/调用初始化函数while(1)LED_scan();/调用数码管扫描函数voidint0()interrupt0/外部中断0服务程序count+;/计数加1页眉内容/溢出操作/ 外部中断1 服务程序/计数减1/溢出操作if(count=

45、100)count=0;voidint2()interrupt2count-;if(count<0)count=99;任务六：采用外中断进行计数和清零控制使用单片机P0、P2端口作为输出口，外接一个2位LED数码管，P3.2外接按键K1，P3.3外接按键K2。编写程序，按键K2作为“加1/暂停/清零”控制；按键K1作为加1计数控制。当按键K2没有按下时，按键K1按下后LED数码管总显示为0；第1次按下键K2时，每次按下K1，LED数码管进行加1显示；第二次按下按键K2时，暂停加1计数，按键K1按下后LED数码管显示暂停前的数值；第3次按下按键K2时，LED数码管显示为0；第4次按下按键K

46、2时，与第1次类似。#include<reg52.h>#defineuintunsignedint#defineucharunsignedcharucharkey1=0,temp1=0,key2=0,temp2=0,key=0;uchartable=0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90;voiddelayms(uintms)while(ms-)uinti=0;for(i;i<120;i+);voidint_int()EA=1;EX0=1;EX1=1;IT0=1;IT1=1;voidint1()interrupt0k

47、ey2+;void int29() interrupt 2页眉内容key1+;voiddisplay()P2=0xfe;P0=tabletemp1;delayms(2);P2=0xfd;P0=tabletemp2;delayms(2);voidmain()int_int();while(1)temp1=key1%10;temp2=key1/10;switch(key2%3)case0:while(1)if(key2%3!=0)break;P2=0xfe;P0=table0;delayms(2);P2=0xfd;P0=table0;delayms(2);key1=0;break;case 1:

48、display();break;case 2: key=key1;while(1)if(key2%3!=2)break;P2=0xfe;P0=tabletemp1;delayms(2);void display()P2=0xfd;P0=tabletemp2;delayms(2);key1=key;break;第六章任务一：简单计数器的设计使用单片机P0,P2端口作为输出口，外接一个2位LED数码管，P3.4外接按键K。编写程序，每次按键K按下时LED数码管进行加1显示，计数范围为099。#include<reg52.h>#defineuintunsignedint#defineuc

49、harunsignedcharuchartable=0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90;ucharkey=0;voiddelayms(uintms)uinti;while(ms-)for(i=0;i<120;i+);voidint_int()EA=1;ET0=1;/开定时器0中断TR0=1;/启动定时器0TMOD=0x05;/设置工作方式为1选择计数功能TH0=0xff;TL0=0xff;/装初值使得按一下就中断voidint1()interrupt1TH0=0xff;TL0=0xff;key+;P2=0xfe;P0=tab

50、lekey%10;delayms(3);P2=0xfd;P0=tablekey/10;delayms(3);voidmain()int_int();while(1)display();if(key%10=9&key/10=9)key=0;(2)#include<reg52.h>#defineuintunsignedint#defineucharunsignedcharuchartable=0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90;num1=0;num2=0;voiddelay(uintms)uinti;while(m

51、s-)for(i=0;i<120;i+);voidint_int()EA=1;ET0=1;/开定时器0中断TR0=1;/启动定时器0TMOD=0x05;/设置工作方式为1TH0=0xff;TL0=0xff;/装初值使得按一下就中断voidjishu()if(num1<=9)num1+;页眉内容if(num1>9)num1=0;if(num2!=9)num2+;elsenum2=0;voidint1()interrupt1TH0=0xff;TL0=0xff;jishu();voidscan()P2=0xfe;P0=tablenum1;delay(3);P2=0xfd;P0=ta

52、blenum2;delay(3);main()int_int();while(1)scan();任务二：方波信号发生器假设单片机晶振频率为12MHz,使用T1,在方式1下控制P1.0输出1ms的等宽方波信号#include<reg52.h>#defineuintunsignedint#defineucharunsignedcharsbitwave=P1A0;voidint_int()EA=1;ET1=1;/开定时器1中断TR1=1;/启动定时器1TMOD=0X10;/设置工作方式为1，选择定时功能TH1=(65536-500)/256;TL1=(65536-500)%256;voi

53、d int3() interrupt 3页眉内容wave=wave;TH1=(65536-500)/256;TL1=(65536-500)%256;voidmain()int_int();while(1);任务三：用T2实现流水灯控制假设单片机晶振频率为12MHz，设计1个硬件延时1s的流水灯。要求使用T2实现此功能。#include<reg52.h>/头文件#include<intrins.h>/左移右移函数头文件#defineuintunsignedint/宏定义#defineucharunsignedchar/宏定义ucharnum=0;voidinit()/初始

54、化子函数EA=1;/打开总中断ET2=1;打开定时器2中断TR2=1;/启动定时器2RCAP2H=(65536-50000)/256;/重装载计数器赋初值RCAP2L=(65536-50000)%256;P1=0xfe;/初始状态点亮第一个LEDvoidmain()init();/调用初始化函数while(1);voidTimer2()interrupt5/T2定时器的中断服务子程序staticuchart2=0;TF2=0;/溢出标志位软件清零t2+;/每50ms进一次中断if(t2=20)/定时时间1sP1=_crol_(P1,1);/流水t2=0;/t2清零任务四：59s计时器的设计假设

55、单片机晶振频率为 12MHz设计一个59s计时器，要求使用T0工作在方式1下进行页眉内容硬件延时。#include<reg52.h>#defineucharunsignedchar#defineuintunsignedintucharcodetable=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;ucharshi,ge,num;voiddelay(uintms)uchari;while(ms-)for(i=110;i;i-);init()EA=1;/打开总中断ET0=1;打开定时器0中断TR0=1;/启动定时器0TMOD=0x01;/设置定时器0工作方式1TH0=(65536-50000)/256;/高8位赋初值TL0=(65536-50000)%256;/低8位赋初值num=0;/num=58;voiddisplay()shi=num/10;/分离十位ge=num%10;/分离个位P3=0xfe;/送位选点亮个位数码管P2=tablege;/送段选显示个位delay(1);P3=0xfd;/送位选点亮十位数码管P2=tableshi;/送段选显示十位delay(1);voidmain()init();/调用初始化函数while(1)/循环display();/