With the continuous development of science and technology, People have higher request to the accuracy of the time calculate. How the clock work more precisely？ How to allow them a better service to our lives? Clearly the traditional clock can not me
library IEEE; Library UNISIM; use IEEE.STD_LOGIC_1164.ALL; use IEEE.STD_LOGIC_UNSIGNED.ALL; use IEEE.STD_LOGIC_ARITH.ALL; use UNISIM.vcomponents.all; entity pin_test is port ( rst_manu_h :in std_logic; clk_in :in std_logic; FPGA_CR2 :out std_logic;
