案例的电子时钟电路，其实主要就是一个基于单片机的6位数码管的动态显示电路。在此电路基础上，通过增加相应的一些外围硬件电路，和对应的程序，电路功能就能改变，甚至是实现其它功能完全不同的电路。-Case of the electronic clock circuit, in fact, is mainly a 6-bit microcontroller-based digital dynamic display circuit. Based on this circuit, by increasing the corresponding number of peripheral hardware, and the corresponding procedures, the circuit functions can be changed, or even other functions to achieve a completely different circuit.