ABSTRACT
Real-time operating systems originated with the need to solve two main types of applications: event response and closed-loop control systems. Event response applications require a response to a stimulus in a determined amount of time; an example of such a system is an automotive airbag system. Closedloop control systems continuously process feedback in order to adjust an output; an automotive cruise control system is an example of a closed-loop control system. Both of these types of systems require the completion of an operation within a specific deadline. This type of performance is referred to as determinism.
