Step-by-step solution for $X0\; XOR \; X1$

1. Interpretation of the timing diagram:
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The time course of $X0$ and $X1$ can be
interpreted as $0$'s and $1$'s

1. Interpretation of the timing diagram:
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2. Sometimes an intermediate step is advantageous:
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Here, this could be $/X1.$

3. Next we have to find the result for each column:
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3. Next we have to find the result for each column:
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This result can be reused for time steps with similar inputs.

3. Next we have to find the result for each column:
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4. Applying this for all possible inputs:
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5. Final step: drawing a time diagram again
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