Abstract:

In order to find a simple method to design arbitrary synchronous counters,the logic function modification technique in designing any module-Nsynchronous counters consisting ofJ-Kflip-flops were analyzed.Based on binary synchronous counters composed of J-Kflip-flops,a part of the excitation function equations are modified.Thus the state transition sequence can be changed to achieve module-Nsynchronous counters.Principles for excitation function modification
 and determination of modified functions are outlined.Self-starting of module-N synchronous counters is also analyzed.This proposed technique is simple,conve
nient and more practicable.

Key words: module-Nsynchronous counters, binary synchronous counters, logic function modification, excitation function, self-starting