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For the purposes of design closure, the distinction between constraints and objectives is not important; this article uses the words interchangeably.

Evolution of the Design Closure Flow

Designing a chip used to be a much simpler task. In the early days of VLSI, a chip consisted of a few thousand logic circuits that performed a simple function at speeds of a few MHz. Design closure was simple: if all of the necessary circuits and wires "fit", the chip would perform the desired function.

Modern design closure has grown

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