个51单片机的秒表显示程序，要求计时范围是0.000--999.9，精度为0.1秒。有两个开关控制，一个控制计时开始，一个控制计时结束。但是在实验室编译没有问题，却调不出要的效果来，LED数码管那四位一开始应该显示000.0的-A 51 microcontroller stopwatch display program, requested time range is 0.000- 999.9, accuracy of 0.1 seconds. There are two switch control, a control timing begins, the end of a control time. However, there is no problem in the laboratory compile, but not to the effect of adjusting to, LED digital display that the four should be 000.0 in the beginning