等精度数字频率计的Verilog源码，从上到下的设计思路，分为6个模块。上过Altera公司的FPGA板。 供大家参考，希望大家不要照抄！-Such as precision digital frequency meter Verilog source code, from top to bottom of design ideas, divided into six modules. Been to Altera' s FPGA boards. For your reference,