Because the lpm function code is the best way to fit the structure of device, which is designed by altera factory specialist who is very familiar with our device structure.

• （参考译文：可以使用软件里的megawizard(lpm_counter)来生成计数器； 选择带有VHDL的输出语言.；这应该是实现计数器的有效方法；而且不用进行额外的优化