Al Williams- Combinatorial Logic - Logic that does not rely on the previous state of the system to set the current output state.
- FSM - Finite State Machine; the formal name for the state machines we are discussing.
- Mealy Machine - A state machine where the outputs can rely to some extent on the inputs.
- Moore Machine - A state machine where the outputs rely only on the current state.
- Sequential Logic - Logic that typically uses flip flops and the current output state influences future output states.
- State - The current operating mode of a state machine. For example, a state machine may go from IDLE to ARMED to TRIGGERED. These three things (IDLE, ARMED, and TRIGGERED) are the states.
- Transition - The change of a state machine from one state to another state. It is possible to have a machine state that transitions to itself.
Glossary
A project log for FPGA Boot Camp #4: State Machines
Most FPGA projects will have at least one state machine. Learn how to create these powerful little dedicated CPUs in your designs.
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