利用verilog语言，从上至下层次管理的设计思想；Verilog HDL的行为描述和结构描述,实现8位频率计，4个0检测修正电路的原理说明-The use of Verilog language, top-down hierarchical management design idea Verilog HDL descr iption of the behavior and structure of a descr iption of the realization of frequency

The use of hardware descr iption languages (HDLs) is becoming increasingly common for designing and verifying FPGA designs. Behavior level descr iption not only increases design productivity, but also provides unique advantages for design verif