单片机实训,点阵,矩阵键盘,电子时钟,LED灯

如上图：D3亮了。

实验二8*8点阵的设计

一、实验目的：

1.了解点阵式LED显示原理。

2.掌握单片机与8×8点阵块之间接口电路设计及编程。 3.掌握8155工作原理及与单片机的接口电路设计。 二、实验要求：

利用8×8点阵显示屏，自己设计并调试电路板，实现在单片机的控制下，点阵显示屏显示数字。

三、实验步骤： 1、实验电路图

2、编码程序：

#include

#include #define uchar unsigned char

#define uint unsigned int

uchar i=0,n,k;

uchar code Table[][8]={ {~0x00,~0x00,~0x3C,~0x42,~0x42,~0x3C,~0x00,~0x00}, {~0x00,~0x00,~0x00,~0x22,~0x7E,~0x02,~0x00,~0x00}, {~0x00,~0x00,~0x22,~0x46,~0x4A,~0x32,~0x00,~0x00}, {~0x00,~0x00,~0x22,~0x49,~0x49,~0x36,~0x00,~0x00}, {~0x00,~0x00,~0x18,~0x28,~0x7E,~0x08,~0x00,~0x00}, {~0x00,~0x00,~0x7A,~0x29,~0x29,~0x2E,~0x00,~0x00}, {~0x00,~0x00,~0x3E,~0x49,~0x49,~0x26,~0x00,~0x00}, {~0x00,~0x00,~0x40,~0x4F,~0x50,~0x60,~0x00,~0x00}, {~0x00,~0x00,~0x36,~0x49,~0x49,~0x36,~0x00,~0x00}, {~0x00,~0x00,~0x32,~0x49,~0x49,~0x3E,~0x00,~0x00}, {~0x91,~0x52,~0x00,~0xA4,~0xF5,~0xBF,~0xF4,~0xA4}, {~0x11,~0x13,~0x55,~0x51,~0x55,~0x12,~0x11,~0x00}, };

uchar code Tab[]={~0xfe,~0xfd,~0xfb,~0xf7,~0xef,~0xdf,~0xbf,~0x7f};

void delay(uint i);

void main() { TMOD=0x00; TH0=(8192-3000)/32; TL0=(8192-3000)2; TR0=1; EA=1; ET0=1; while(1) { n=4; } }

void T0_ISP(void) interrupt 1 {

TH0=(8192-3000)/32; TL0=(8192-3000)2; P3 =Tab[k++];

if(k==8)k=0; P0 = Table[n][i]; if(++i == 8) i = 0; }

void delay(uint i) { while(i--); }

3、实验结果：