What are the different models of computation?

The different models of computation include:

1. Turing Machines: A theoretical device that can simulate any algorithmic computation. It consists of a tape, a read/write head, and a set of states that determine its behavior.

2. Finite State Machines: A mathematical model that represents a system with a finite number of states and transitions between those states. It is used to model simple computations and control systems.

3. Lambda Calculus: A formal system in mathematical logic and computer science that represents computation based on function abstraction and application. It is used in the study of programming languages and functional programming.

4. Cellular Automata: A discrete model of computation where a grid of cells evolves over time based on a set of rules. It is often used to study complex systems and simulate natural phenomena.

5. Petri Nets: A graphical and mathematical modeling tool used to describe and analyze systems with concurrent processes. It is commonly used in the field of distributed systems and parallel computing.

6. Register Machines: A theoretical model of computation that consists of a set of registers and instructions for manipulating the contents of those registers. It is used to study the complexity of algorithms and computability.

These models of computation provide different ways to understand and analyze the fundamental principles of computation and algorithms.