Introduction - If you have any usage issues, please Google them yourself
Digital clock is a practical and simple for independent design, but according to different practices, changes and a lot of functions, designed to the sub-frequency digital clock, counting, state transition, binary conversion, and processing Deng special circumstances. Design should be easy to difficult, first to design a simple digital clock, and then expand the functionality. Digital clock in any case, is a separate chip, as a system, do not need, and other smart chip to communicate. This procedure mainly simple time-keeping.