Draw a state diagram for a serial circuit that performs the mathematical operation Z=2 X-Y where

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Step 1: Identify the inputs and outputs of the circuit. The inputs are two serial binary numbers

Draw a state diagram for a serial circuit that performs the mathematical operation $\mathrm{Z}=2 \mathrm{X}-\mathrm{Y}$ where $\mathrm{X}$ and $\mathrm{Y}$ are serial inputs arriving least significant bit first and $\mathrm{Z}$ is the result exiting the circuit least significant bit first.