A vehicular control system is provided and includes a steering control interface, a touch pad, and an actuator. A structure of the trench isolation is constituted of: a trench; a silicon oxide film formed on the inner wall of trench; an oxidation preventive film formed between silicon oxide film and semiconductor substrate; and a filling oxide film filling trench. A return to base time is determined and presented to an operator of a UAV. Further, in embodiments of the present invention, the ECC code is distributed throughout the stored data in the memory segment, increasing the robustness of the ECC code and its resistance to damage or data corruption.