describe mealy fsm with state diagram and state table
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A Mealy Finite State Machine is a type of finite state automaton where the output depends on both the current state and the current input. This is different from a Moore machine where output depends only on the state. Key characteristics include that output is a function of both state and input, it can have fewer states than equivalent Moore machines, and the output changes immediately when the input changes.
The state diagram is a visual representation of a Mealy FSM. It consists of circles representing states, arrows showing transitions between states, and labels on arrows indicating the input and output. The format is input slash output. Self-loops represent staying in the same state, and there's always a start arrow indicating the initial state.
The state table is another way to represent a Mealy FSM. It shows the current states in rows and input values in columns. Each cell contains the next state and output separated by a vertical bar. This format makes it easy to see all transitions and outputs at a glance, combining both transition and output information in a compact form.
To summarize what we have learned: Mealy FSMs produce output based on both current state and input, making them efficient for sequential logic design. State diagrams provide visual representation while state tables organize information systematically. These tools are fundamental in digital system design.
The state diagram is a visual representation of a Mealy FSM. It consists of circles representing states, arrows showing transitions between states, and labels on arrows indicating the input and output. The format is input slash output. Self-loops represent staying in the same state, and there's always a start arrow indicating the initial state.
The state table is another way to represent a Mealy FSM. It shows the current states in rows and input values in columns. Each cell contains the next state and output separated by a vertical bar. This format makes it easy to see all transitions and outputs at a glance, combining both transition and output information in a compact form.
Let's look at a practical example: a sequence detector that identifies the pattern one zero in an input stream. The FSM has two states: S0 for start and S1 for when we've received a one. When in S1 and we receive a zero, we output one indicating the pattern is detected. The blue arrow shows getting a one, the red arrow shows detecting the complete sequence.
To summarize what we have learned: Mealy FSMs produce output based on both current state and input, making them efficient for sequential logic design. State diagrams provide visual representation while state tables organize information systematically. These tools are fundamental in digital system design and protocol implementation.