Real‐Time Systems: An Introduction and the State‐of‐the‐Art
Krishna M. Kavi, Robert Akl, Ali R. Hurson · Wiley Encyclopedia of Computer Science and Engineering · 2009
Abstract Real‐time systemscover a broad spectrum of automated platforms in which the correctness of the system not only requires functionally (or logical) correct operation but also produces results within prespecified “real‐time constraints.” By contrast, anon–real‐time systemis one for which there is no deadline, even if fast response or high performance is desired or even preferred. Real‐time systems are usually “situated” in an environment and involve in sensing apparatus to detect, control, and adapt to the environmental conditions. Real‐time systems can be networked and distributed (e.g., sensor networks) or embedded (e.g., automotive control systems, cell phones).