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Intermediate Registers, Counters & Memory 9 composants

4-Bit Johnson Counter

A twisted-ring counter: the inverted output of the last flip-flop feeds the first, producing eight unique states from four flip-flops.

Fig. 1 — 4-Bit Johnson Counter INTERACTIVE
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Ce que tu apprendras

  • Build a twisted-ring (Johnson) counter
  • Get 2N states from N flip-flops
  • Compare Johnson and ring counters

Comment ça fonctionne

A ring of four D flip-flops where the INVERTED output of the last flip-flop feeds the first. Starting from 0000 it fills with 1s then empties, giving eight unique states from four flip-flops.

Composants utilisés

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Applications concrètes

Multi-phase clock generation, low-glitch sequencers, and decoded timing signals.