PIC16F877A复位系统没有响应

嗨，我仍然是新的，但我有一个倒计时计时器项目使用PIC16F87A比运行一个4位7段显示，并有5个按钮来选择时间倒数从。在倒计时结束时，它发出3次哔哔声。它运行得很好，但是在显示器和按钮会死掉的随机事件中，系统似乎完全没有响应，但看起来系统仍然在后台运行，因为显示和按钮A是不工作，我仍然得到嘟嘟的时间结束。有人能给我一些关于如何解决这个问题的建议？谢谢



      以下为原文

    Hi, I am still new to this, but I have a count-down timer project using a PIC16F877a than runs a 4 digit 7 segment display and has 5 buttons to select the time to count down from. At the end of the count-down, it beeps 3 times.

It runs perfectly but get random events where the display and buttons would just go dead, the system then seems to be completely non-responsive, but it looks like the system is still running in the background, because although the display and buttons are not working, I still get the beep at the end of the time-out.

Can someone please give me some advice on how to troubleshoot this ?

Thanks