Differences between logic and wire data types in SystemVerilog

In SystemVerilog, the 'logic' and 'wire' data types are commonly used for modeling digital circuit behavior. Here are the main differences between the two:

• logic: The 'logic' data type is a four-state data type that can represent four different values: 0, 1, 'x' (unknown), and 'z' (high-impedance). It is typically used for modeling digital circuit behavior where all four states need to be considered.
• wire: The 'wire' data type is a two-state data type that can only have the values 0 and 1. It is used to represent physical connections between components in a digital circuit.

When to choose one over the other:

If you need to model signals or variables that may have unknown or high-impedance states in your design, you should use the 'logic' data type. On the other hand, if you are representing physical connections or simple digital signals that only have two states (0 or 1), the 'wire' data type is more appropriate.

It is important to choose the appropriate data type based on the requirements of your design to ensure accurate modeling and simulation results.