The task of VLSI physical design is to produce the layout of an integrated circuit. New performance requirements are becoming increasingly dominant in today's sub-micron regimes requiring new physical design algorithms. Genetic algorithms have been increasingly successful when applied in VLSI physical design in the last 10 years. Genetic algorithms for VLSI physical design are reviewed in gener...

VLSI stands for "Very Large Scale Integration". This is the field which involves packing more and more logic devices into smaller and smaller areas. Thanks to VLSI, circuits that would have taken boardfuls of space can now be put into a small space few millimeters across! This has opened up a big opportunity to do things that were not possible before. VLSI circuits are everywhere ... your compu...

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The use of dual threshold voltages can signiicantly reduce the static power dissipated in CMOS VLSI circuits. With the supply voltage at 1V and threshold voltage as low as 0.2V the subthreshold leakage power of transistors starts dominating the dynamic power. Also, many times a large number of devices spend a long time in a standby mode where the leakage power is the only source of power consum...

In this paper, we discuss on accuracy of power dissipation models for CMOS VLSI circuits. Some researchers have proposed several e cient power estimation methods for CMOS circuits [1][2][3][4]. However, we do not know how accurate they are because we have not established a method to compare the estimated results of power consumption with power consumption of actual VLSI chips. To evaluate the a...

We describe a technique for translating semi custom VLSI circuits automatically integrating two design environments into eld programmable gate arrays FPGAs for rapid and inexpensive proto typing The VLSI circuits are designed using a cell matrix based environment that produces chips with density comparable to full custom VLSI design These circuits are translated automatically into FPGAs for tes...

Neuromorphic circuits are being used to develop a new generation of computing technologies based on the organizing principles of the biological nervous system. Within this context, we present neuromorphic circuits for implementing massively parallel VLSI networks of integrate-and-fire neurons with adaptation and spike-based plasticity mechanisms. We describe both analog continuous time and digi...

Hierarchical graph models are a powerful tool for describing VLSI circuits. They combine the representation of a hierarchical decomposition of a circuit with a graph description of its topological structure in terms of components and connections. Structured Graphs are an example of such models. In this paper we consider the graph-theoretic problems of spanning trees and Steiner trees in structu...

In this paper we present two analog VLSI circuits that implement current mode winner-take-all (WTA) networks with lateral excitation. We describe their principles of operation and compare their performance to previously proposed circuits. The desirable properties of these circuits, namely compactness, low power consumption, collective processing and robustness to noisy inputs make them ideal fo...