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Experiment 6 - The 2-bit Down Counter

Consider the circuit diagram. The output Q0 is connected directly with the input Data IN of the second T-flip-flops...

Circuit diagram 2-bit down counter.

Illustration states of the 2-bit down counter.

Each time you press the pushbutton switch S1, the counter counts down from 11 (decimal 3) to 00 (decimal 0), before it falls back to 11.

Circuit 2-bit down counter. (Enlarge)

In the next experiment you build a 4-bit down counter...