1、第四課 數碼管靜態、動態顯示程序設計1第五課數碼管靜態、動態顯示程序設計2教學內容：數碼管的動態和靜態顯示原理及應用教學重點：數碼管的動態顯示原理及應用教學難點：數碼管的動態顯示原理及應用教學目的：掌握數碼管的動態顯示原理及應用程序的編寫一、回顧上節課的內容及上學期所學關于數碼管的知識二、LED顯示原理h g f e d c b a共陽：低電平點亮：“0” C0H共陰：高電平點亮：“0” 3FH數碼管的現實通常使用查表法。例：（共陰）uchar code table=0 x3f,0 x06,0 x5b,0 x4f,0 x66,0 x6d,0 x7d,0 x07,0 x7f,0 x6f,0 x7

2、7,0 x7c,0 x39,0 x5e,0 x79,0 x71;三、靜態顯示原理（共陽）1、靜態顯示原理的分析圖112345678P0.0/AD0 P0.1/AD1 P0.2/AD2 P0.3/AD3 P0.4/AD4 P0.5/AD5 P0.6/AD6P0.7/AD7P2.0/A8P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.7/A15P3.0/RXD P3.1/TXD P3.2/INT0 P3.3/INT1P3.4/T0P3.5/T1 P3.6/WR P3.7/RD2、例：8個數碼管靜態顯示0-F,每個字母之間間隔1S。#i

3、nclude#include#define uint unsigned int#define uchar unsigned charuchar code table=0 x3f,0 x06,0 x5b,0 x4f,0 x66,0 x6d,0 x7d,0 x07,0 x7f,0 x6f,0 x77,0 x7c,0 x39,0 x5e,0 x79,0 x71;void delay(uint z);void main() uchar i;P2=0 xff;while(1)for(i=0;i0;x-)for(y=110;y0;y-);四、動態顯示原理1、動態顯示原理的分析例1：讓8只數碼管顯示數字1-

4、8，看起來是同時顯示的。(圖1)#include#include#define uint unsigned int#define uchar unsigned charuchar code table=0 x06,0 x5b,0 x4f,0 x66,0 x6d,0 x7d,0 x07,0 x7f;uchar code table1=0 x01,0 x02,0 x04,0 x08,0 x10,0 x20,0 x40,0 x80;void delay(uint z);void main() uchar i;while(1)for(i=0;i0;x-)for(y=110;y0;y-);小結：該程序加

5、一條P2=0 xff;語句顯示效果會比較好。例2：讓8只數碼管顯示數字1-8，并來回顯示。(圖1)#include#include#define uchar unsigned char#define uint unsigned intuchar code aa= 0 xf9,0 xa4,0 xb0,0 x99,0 x92,0 x82,0 xf8,0 x80;uchar code ss= 0 xf8,0 x82,0 x92,0 x99,0 xb0,0 xa4,;void delay(uint z)uchar t;while(z-)for(t=110;t0;t-);void main()while(1)uint i;P2=0 x01;for(i=0;i8;i+)P2=_cror_(P2,1);P0=aai;delay(350);for(i=0;i6;i+)P0=ssi;delay(350); 五、小結：通過本次課的學習，學生應該熟練掌握數碼管的動態顯示原理 及應