用GAL16V8实现模2～64可变计数器

Realization of a Variable Modulus Counter Via GAL16V8 Chips

简单介绍了测周模式的测频原理,着重介绍用 GAL 可编程器件设计、编程模可变计数器,以代替测周模式测频装置中的定标器.

This thesis is about the frequency-surveying principle of cycle-surveying mode,and it also tells the fact that the counter of surveying mode and frequen- cy should be taken the place by the desiger of GAL programming appliances and the changable counter of programming model.