在开发板上可以实现从00到59的计数，相当于一个60进制的计数器，里面包括了将脉冲分频的代码编写-In the development board can be achieved 00 to 59 counts, the equivalent of a 60 hexadecimal counter, which includes the pulse frequency of the code

运用VHDL语言编写的可实现12进制的计数器。(A 12 - scale counter written in VHDL.)