实现秒表功能。数码管高两位显示秒，低两位显示精确到0.01秒的数值（提示，修改PIT0中断的时间，调整走时和显示算法；在实现自由走时的基础上，利用按键，使其具有开始、暂停、继续、停止等功能。开始键负责清零，然后开始计时。(Stopwatch function. Two digital tube display seconds, low two digit display accurate to 0.01 seconds (numerical prompt, modify the PIT0 int

主要是控制舵机按照多大角度进行移动控制，很适合初学者学习交流(It is mainly to control the motion control of the rudder according to how much angle, it is very suitable for beginners to learn communication)

STM32设计的一个手表例程 用OLED 和温度传感器，可以显示时间温度、秒表等功能切换。(A watch routine designed by STM32 can use OLED and temperature sensors to display functions such as time and temperature, stopwatch and so on.)

基于stm32f103zet6的万年历设计(Calendar design based on stm32f103zet6)