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Design and Analysis for Fall Detection System Simplification
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VLSI implementations of threshold logic-a comprehensive survey.

V Beiu1, J M Quintana, M J Avedillo

  • 1Sch. of Electr. Eng. and Comput. Sci., Washington State Univ., Pullman, WA, USA.

IEEE Transactions on Neural Networks
|February 5, 2008
PubMed
Summary

This review covers decades of silicon threshold logic gate implementations. It details capacitive, conductance, and differential very-large-scale integration (VLSI) solutions, plus emerging technologies.

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Area of Science:

  • Electrical Engineering
  • Computer Engineering
  • Materials Science

Background:

  • Threshold logic gates offer advantages over traditional Boolean logic.
  • Silicon-based implementations are crucial for modern integrated circuits.
  • A comprehensive review of diverse silicon threshold logic gate designs is needed.

Purpose of the Study:

  • To provide an in-depth review of silicon implementations of threshold logic gates.
  • To cover several decades of research and development in this field.
  • To categorize and detail various VLSI approaches.

Main Methods:

  • Literature review of scientific publications and patents.
  • Categorization of threshold logic gate implementations based on their core principles.
  • Detailed description of capacitive, conductance/current, and differential solutions.
  • Inclusion of early MOS and advanced single-electron technologies.

Main Results:

  • Overview of early MOS threshold logic solutions.
  • Detailed analysis of numerous very-large-scale integration (VLSI) implementations.
  • Categorization into capacitive (switched capacitor, floating gate), conductance/current (pseudo-nMOS, output-wired-inverters), and differential solutions.
  • Brief mention of negative resistance and single-electron device-based implementations.

Conclusions:

  • Silicon threshold logic gates have a rich history of diverse implementations.
  • VLSI designs have evolved significantly across capacitive, conductance, and differential domains.
  • Future research may explore novel materials and device physics for advanced threshold logic.