Deterministic Automata are mathematical models used in computer science to represent and analyze the behavior of systems with a finite number of states. In these models, for each state and input symbol, there is exactly one transition to another state. This means that the next state is determined solely by the current state and the input, making the process predictable and straightforward. These automata are often used in formal language theory and compiler design to recognize patterns and validate strings. They can be represented graphically as directed graphs, where nodes represent states and edges represent transitions based on input symbols.