实验1 单片机IO口应用及数码管显示

1、实验报告（一）课程 单片机技术应用 实验名称 单片机IO口应用及数码管显示 第 1 页专业_ 软件工程_ 班级_ _ 5_ 学号 姓名 郭汉杰 实验日期：2012年 3 月 12 日 报告退发 (订正 、 重做 一、实验目的（1）掌握单片机IO口的使用（2）掌握单片机中数码管的工作原理（3）掌握数码管静态显示和动态显示原理及编程实现二、实验要求（1）实验前，要求对所要进行的实验进行预习（2）实验中，通过阅读实验指导书和问老师，完成实验内容（3）实验后，要求按照要求写实验报告三、实验项目性质验证性试验四、实验要点（1）检查硬件配件是否齐全（2）单片机接线时要仔细小心五、实验内容（请将代码贴上，并

2、附加接线说明，程序要有适当的注释）1 单片机驱动蜂鸣器的实验；a b 基本要求：控制蜂鸣器每2秒响0.5秒。#include sbit BEEP = P15;/*/void delay(void /0.5秒 误差 0usunsigned char a,b,c;for(c=23;c0;c-for(b=152;b0;b-for(a=70;a0;a-;main(while(1BEEP = 0; /当按键按下对应单片机脚变低电平 BEEP发声delay(;BEEP = 1; /当松开键按对应单片机脚变高电平 BEEP关闭delay(; delay(;delay(; 2 单片机驱动继电器输出实验；a b

3、 基本要求：控制继电器每5秒吸合0.5秒。#include sbit BEEP = P14;/*/void delay(unsigned int i /误差 0usunsigned char a,b,c;for(c=23*i;c0;c-for(b=152;b0;b-for(a=70;a0;a-;main(while(1BEEP = 0; /当按键按下对应单片机脚变低电平 BEEP发声delay(1;BEEP = 1; /当松开键按对应单片机脚变高电平 BEEP关闭delay(9; 3.延时实现p2口LED流水灯效果 （用循环移位指令）#include void Delayms(unsigned

4、 int xmsunsigned char i ;while(xms0xms-;for(i=0; i100; i+;void main (voidunsigned char i=0 ;while (1for(i=0; i8; i+ / 控制LED从左到右依次点亮P1 = (0x01 Delayms (500 ;for(i=0; i 0; i-for(j = 255; j 0; j-;5. 直接用IO口做片选信号，控制8位数码管上显示1,2,3,4F,循环显示#include #include void delay(unsigned int i; /函数声名char DelayCNT;/定义变量

5、unsigned char code Disp_Tab = 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40; /段码控制unsigned char code dispbit8=0xfe,0xfd,0xfb,0xf7,0xef,0xdF,0xbF,0x7F; main( unsigned int i,LedNumVal=1 ; /变量定义DelayCNT=0;while(1 if(+DelayCNT=20 /控制数字变化速度DelayCNT=0; /20个扫描周期清零一次+L

6、edNumVal; /每隔20个扫描周期加一次for( i=0; i 0; i-for(j = 200; j 0; j-;6. 用译码器138做片选信号，控制4位数码管上做加1显示。从0000开始.说明：JP15与JP16 用8个短路冒连接，JP10 （P0）与J12 用8PIN排线连接#include #include sbit LS138A = P22; /定义138译码器的输入A脚由P2.2控制 void delay(unsigned int i; /函数声名void display(unsigned char k;/此表为 LED 的字模unsigned char code Disp_

7、Tab = 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71; /*主函数*/ main( unsigned int n=0;while(1 /进入循环状态 if(n=9999n=0; LS138A=0; LS138B=0; LS138C=0; display(0; LS138A=1; LS138B=0; LS138C=0; display(0; LS138A=0; LS138B=1; LS138C=0; display(0; LS138A=1; LS138B=1; LS138C=0;

8、 display(0; LS138A=0; LS138B=0; LS138C=1; display(n%10000/1000;LS138A=1; LS138B=0; LS138C=1; display(n%1000/100;LS138A=0; LS138B=1; LS138C=1; display(n%100/10;LS138A=1; LS138B=1; LS138C=1; display(n%10;n+; void display(unsigned char kP0=Disp_Tabk;delay(10;/* 延时程序 */void delay(unsigned int ichar j;fo

9、r(i; i 0; i-for(j = 110; j 0; j-;7.利用动态扫描方法在八位数码管上显示出稳定的87654321.说明：JP15与JP16 用8个短路冒连接，JP10 （P0）与J12 用8PIN排线连接#include #include sbit LS138A = P22; /定义138译码器的输入A脚由P2.2控制 void delay(unsigned int i; /函数声名void display(unsigned char k;/此表为 LED 的字模unsigned char code Disp_Tab =0x3f,0x06,0x5b,0x4f,0x66,0x6d

10、,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71; /*主函数*/ main( while(1 /进入循环状态 LS138A=0; LS138B=0; LS138C=0; display(8; LS138A=1; LS138B=0; LS138C=0; display(7; LS138A=0; LS138B=1; LS138C=0; display(6; LS138A=1; LS138B=1; LS138C=0; display(5; LS138A=0; LS138B=0; LS138C=1; display(4;LS138A=1; LS13

11、8B=0; LS138C=1; display(3;LS138A=0; LS138B=1; LS138C=1; display(2;LS138A=1; LS138B=1; LS138C=1; display(1; void display(unsigned char kP0=Disp_Tabk;delay(2;/*延时程序 */void delay(unsigned int ichar j;for(i; i 0; i-for(j = 110; j 0; j-; 8.按k1数码管显示1，按k2显示2，以此类推8个按钮都要实现对应数字显示。说明：JP10 （P0）与JP3 用8PIN排线连接，JP

12、11 （P2）与JP6 K按钮组 用8PIN排线连接#include #include sbit k1 = P27;sbit k2 = P26;sbit k3 = P25;sbit k4 = P24;sbit k5 = P23;sbit k6 = P22;sbit k7 = P21;sbit k8 = P20; void delay(unsigned int i; /函数声名void display(unsigned char k;/此表为 LED 的字模/unsigned char code Disp_Tab = 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07

13、,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;unsigned char code Disp_Tab = 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71; /*主函数*/ main( int i;display(0;while(1 /进入循环状态 if(!k1delay(5;while(!k1if(k1;delay(5;if(k1display(1; else if(!k2delay(5;while(!k2if(k2;delay(5;if(k2di

14、splay(2; else if(!k3delay(5;while(!k3if(k3;delay(5;if(k3display(3; else if(!k4delay(5;while(!k4if(k4;delay(5;if(k4display(4; else if(!k5delay(5;while(!k5if(k5;delay(5;if(k5display(5; else if(!k6delay(5;while(!k6if(k6;delay(5;if(k6display(6; else if(!k7delay(5;while(!k7if(k7;delay(5;if(k7display(7; else if(!k8delay(5;while(!k8if(k8;delay(5;if(k8display(8;