本文描述的是数字式频率计的设计过程，其中包含了所用到的VHDl语言的源代码，和仿真图型，是比较完整描述的设计数字频率计的文章-This article describes the digital frequency of the design process, which includes the use of language VHDl source code, graphics and simulation, which is a more complete descr iption of the design of digital frequency meter article