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Experiment 15 - The Johnson Counter

With a Johnson counter, the inverted output of the last flip-flop is connected to the input of the first flip-flops...

Circuit diagram Johnson counter.

Illustration states of the Johnson counter.

Take a look at the circuit diagram. The shown Johnson counter consists again of four D flip-flops. With Reset you set the counter to (0000). Thereafter, the Johnson counter at each clock signal passes through eight states (mod-8 counter)...

Circuit Johnson counter. (Enlarge)

Now you continue with applications of counters...