Computer models are digital representations of real-world systems or processes. They use mathematical equations and algorithms to simulate how these systems behave under various conditions. For example, a weather model predicts future weather patterns by analyzing data from past weather events. These models are widely used in fields like engineering, economics, and environmental science to test hypotheses and make predictions. By adjusting different variables, researchers can explore potential outcomes and make informed decisions. Overall, computer models help simplify complex systems, making them easier to understand and analyze.