This paper introduces the process of logic design of digital circuits, and mainly explains the function of asynchronous counter and decoder. The digital clock is an example of this application.
本文介绍了数字电路系统的逻辑设计过程，并且着重阐明异步计数器和译码器的功能，数字钟是这方面应用的一个实例。
The top-down design method is adopted in the logic design process. And the function of the coder and the decoder has been proved to be correct.
在逻辑设计中，使用了自顶向下的设计方法，正确实现了编码和解码的功能。
The experimental results show that the decoder possesses simple logic control, low time delay and high resource using.
实验结果表明，该译码器具有时序控制简单、译码时延小和资源利用率高的特点。
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