Empirical Relations and Design

Large, complex circuits that can perform the logical operations required in a computer have been designed in many places for over three decades. Experience has shown that complex interconnection patterns are needed to implement the logic. The physical constraints of wiring technology must allow designers and design tools a large degree of choice among possible interconnection patterns. Certain generalizations concerning quantitative aspects of the interconnections have been recognized. Several of the empirical observations are reviewed and related where possible to models and used to illustrate trends. These generalizations give early guidance to design, and also may be regarded as targets against which designs may be measured. NOTE: FIGURES NOT INCLUDED IN PS FILE.

By: R. W. Keyes

Published in: RC20057 in 1995


This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.


Questions about this service can be mailed to reports@us.ibm.com .