8255总线实验编写程序利用8255扩展单片机的IO口，控制8位数码管显示1-8。

痛定思痛。 2023-01-05 14:25 183阅读 0赞

## 8255总线实验 编写程序利用8255扩展单片机的IO口，控制8位数码管显示1-8。 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 1]

程序：  
\#include<reg51.h>  
\#include<absacc.h>  
\#define PORT\_A XBYTE\[0X7FFC\]  
\#define PORT\_B XBYTE\[0X7FFD\]  
\#define PORT\_C XBYTE\[0X7FFE\]  
\#define PORT\_CTL XBYTE\[0X7FFF\]  
void delay()  
\{  
unsigned int i;  
for(i=0;i<40;i++);  
\}  
int main(void)  
\{  
unsigned char smg\[\]=\{0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90\};  
unsigned char i=0;  
unsigned char weiport\[\]=\{0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f\};  
PORT\_CTL=0x80;  
while(1)  
\{  
PORT\_B=weiport\[i\];  
PORT\_A=smg\[i\];  
i++;  
if(i==8)  
i=0;  
delay();  
\}  
\}  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 5]  
视频：  
[https://www.bilibili.com/video/BV1zA411H7Ft/][https_www.bilibili.com_video_BV1zA411H7Ft]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center]: /images/20221119/0d9cafda547f415d92ff91d0870ee5a5.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 1]: https://img-blog.csdnimg.cn/20210113095432779.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 2]: https://img-blog.csdnimg.cn/20210113095445481.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 3]: https://img-blog.csdnimg.cn/20210113095445305.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0,size_16,color_FFFFFF,t_70#pic_center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70_pic_center 4]: https://img-blog.csdnimg.cn/2021011309544553.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0,size_16,color_FFFFFF,t_70#pic_center
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[https_www.bilibili.com_video_BV1zA411H7Ft]: https://www.bilibili.com/video/BV1zA411H7Ft/