这是一个利用VHDL代码编写通过按键控制的分频器，通过给按键s3、s2、s1、s0赋不同的值，可以使分频器输出不同频率，此代码原用于自制示波器的分频。-This is a use of the VHDL code written by key control divider divider output through to key s3, s2, s1, s0 endowed different values, different frequencies, this code is the original for homemade oscilloscope divider.