# Excitation Table **A table showing the inputs required for a particular state change of a [[latch]] or [[flip-flop]].** An *excitation table* is a table that shows the minimum inputs required for a [[latch]] or [[flip-flop]] to enter a particular state. Excitation tables can be derived from characteristic [[Characteristic Equation#Digital Electronics|equations]] or [[Characteristic Table|tables]]. > [!Example] > The excitation table of a T flip-flop is: > > | $Q$ | $Q_{\text{next}}$ | $T$ | > |:---:|:-----------------:|:---:| > | $0$ | $0$ | $0$ | > | $0$ | $1$ | $1$ | > | $1$ | $0$ | $1$ | > | $1$ | $1$ | $0$ |