Real-time computing refers to the ability of a computer system to respond immediately to external inputs or events, and produce output within a predetermined time frame. It is a specialized skill that requires knowledge of specialized programming languages, hardware, and algorithms. Professionals working in real-time computing applications must have a deep understanding of the system's requirements, performance characteristics, and limitations, as well as the ability to design and implement efficient and reliable real-time systems. Real-time computing is used in various fields, including aerospace, defense, industrial automation, and telecommunications.