| A | B |
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| Bubble | A circle in a state diagram containing the state name and values of the state variables. |
| Conditional Transition | A transition between states of a state machine that occurs only under specific conditions of one or more control inputs. |
| Control Input | A state machine input that directs the operation of the machine from state to state. |
| Mealy Machine | A state machine whose output is determined by both the sequential logic and the combinational logic of the machine. |
| Moore Machine | A state machine whose output is determined only by the sequential logic of the machine. |
| State Machines | A synchronous sequential circuit, consisting of a sequential logic section and a combinational logic section, whose outputs and internal flip-flops progress through a predictable sequence of states in responds to a clock and other input signals. |
| State Table | A table whose entries represent the sequence of individual FF states (i.e., 0 or 1) for a sequential binary circuit. |
| State Transition Diagram | A graphic representation of the operation of a sequential binary circuit, showing the sequence of individual FF states and conditions needed for transitions from one state to the next. |
| State Variables | The variables held in the flip-flops of a state machine that determine its present state. |
