Hard real-time systems are computing systems that must complete their tasks within strict time constraints. If these tasks are not finished on time, it can lead to catastrophic failures or dangerous situations. Examples of hard real-time systems include aircraft control systems and medical devices, where timely responses are critical for safety and functionality. In hard real-time systems, the timing of operations is as important as the correctness of the results. These systems often use specialized scheduling algorithms to ensure that tasks are prioritized and executed within their deadlines. This reliability is essential in environments where delays can have serious consequences, such as in automotive safety systems or industrial automation.