Introduction - If you have any usage issues, please Google them yourself
A square wave signal capable of testing 10HZ~10MHZ;
(2) the reference clock input by the circuit is 1HZ, and the measured value is output in the form of 8421BCD code;
(3) the system has a reset key;
(4) adopt the method of layering sub sub module and design with Verilog HDL;
(5) write test simulation program.