8 THE STATE MACHINE
A state machine is a model for controlling a sequence of actions. In a state machine, a task is broken down into a series of stages, or states. The system flows through these states along prescribed routes, transitioning from one state to another based on inputs or other triggers. State machines are widely used to organize the operations in an FPGA, so understanding how they work is crucial to developing sophisticated FPGA designs.
Some common examples of state machines control behaviors in elevators, traffic lights, and vending machines. Each of these devices can only be in one unique state at any given time and can ...
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