这是一个等精度频率计的VHDL源程序，里面有QuartusII的完整工程文件。-This is a precision frequency meter, such as the VHDL source code, which has a complete project file QuartusII.

等精度测频程序，VHDL语言编写，已编译通过，放心使用。-Procedures such as precision frequency measurement, VHDL language, compiled by, ease of use.