Systems can be described in different time models and on various levels of abstraction. We can distinguish between models in discrete-event, discrete and continuous time. Graph-based

Christoph Grimm

Klaus Waldschmidt

Systems can be described in different time models and on various levels of abstraction. We can distinguish between models in discrete-event, discrete and continuous time. Graph-based, formal models allow us to use either discrete event/discrete time models or continuous time models. The combined use of all three time models in one system is the main problem when modeling mixed analog/digital systems.  In this paper, a graph-based model is presented that supports the use of all three time models in different parts of a graph. This allows digital, discrete-time systems to be modeled together with their analog, physical environment

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KIR -- A graph-based model for description of mixed analog/digital systems

http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.56.9858

KIR -- A graph-based model for description of mixed analog/digital systems

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