Figure 7-40 (a) Four-bit ring counter; (b) waveforms; (c) sequence table; (d) state diagram.
ber; fox example, a MOD-8 ring counter requires eight FFs, while a MOD-8 binary counter requires only three
Despite the fact that it is less efficient I the use of FFs, a ring counter is still useful because it can be decoding signal for each state is obtained at the output of its corresponding FF. Compare the FF waveforms of the ring counter with the decoding waveforms in Figure 7-27. In some cases a ring counter might be a better choice than a binary counter with its as