Ring Counter - Four-bit Ring Counter Sequences

Four-bit Ring Counter Sequences

Straight ring/Overbeck counter Twisted ring/Johnson counter
State Q0 Q1 Q2 r3 State Q0 Q1 r2 Q3
0 1 0 0 0 0 0 0 0 0
1 0 1 0 0 1 1 0 0 0
2 0 0 1 0 2 1 1 0 0
3 0 0 0 1 3 1 1 1 0
0 1 0 0 0 4 1 1 1 1
1 0 1 0 0 5 0 1 1 1
2 0 0 1 0 6 0 0 1 1
3 0 0 0 1 7 0 0 0 1
0 1 0 0 0 0 0 0 0 0

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