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Experiment 6 - The 2-bit Shift Register

Take a look at the circuit diagram of the 2-bit shift register. The output Q1 of the first flip-flop is connected directly to the D input of the second flip-flop...

Both flip-flops are connected directly to the clock signal (Clk). Therefore, all flip-flop switch synchronously.

Circuit diagram of a 2 -bit shift register.

Circuit 2-bit shift register. (Enlarge)

By pressing the Clk push button switch you trigger a clock signal...

  • At the first clock signal, the value Data is stored and displayed at Q1.
  • At the second clock signal, the value of Q1 is stored at the second flip-flop and displayed at Q0. At the same time a new value Data is stored and displayed at Q1.

You have "shifted" the stored value by one flip-flop to the right...

In the next experiment, you expand the chain...

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