Key Points
An embedded software system is part of a hardware/software system that reacts to events in its environment. The software is “embedded” in the hardware. Embedded systems are normally real-time systems.
A real-time system is a software system that must respond to events in real time. System correctness does not just depend on the results it produces, but also on the time when these results are produced.
Real-time systems are usually implemented as a set of communicating processes that react to stimuli to produce responses.
State models are an important design representation for embedded real-time systems. They are used to show how the system reacts to its environment as events trigger changes of state in the system.
Several standard ...
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