In summary, the key idea in the Ptolemy project is to mix models of computation, implementation languages, and design styles, rather than trying to develop one, all-encompassing technique. The rationale is that specialized design techniques are (1) more useful to the system-level designer, and (2) more amenable to high-quality high-level synthesis of hardware and software. The Ptolemy kernel demonstrates one way to mix tools that have fundamentally different semantics, and provides a laboratory for experimenting with such mixtures.
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