利用VHDL实现偶数分频，设计了一种能够实现等占空比的任意偶数分频、等占空比任意奇数分频、不等占空比的任意半整数分频的较为通用的分频器,并通过QuartusII进行了功能仿真。

-Use VHDL to achieve an even frequency, designed to achieve such a duty cycle of any even frequency, such as the duty cycle divide any odd number, ranging from any duty semi-integer frequency divider of the more common and carried out by QuartusII functional simulation.