CMOS Analog/Digital Circuit of the Hysteresis McCulloch-Pitts Neuron for Ramsey Numbers

نویسندگان

  • YONG BEOM CHO
  • J. W. Harley
  • KAZUHIRO TSUCHIYA
  • YOSHIYASU TAKEFUJI
چکیده

A parallel algorithm for finding Ramsey numbers is presented where analog/digital CMOS circuits for the hysteresis McCulloch-Pitts binary neuron are described. The hysteresis McCulloch-Pitts binary neuron model is used in order to suppress the oscillatory behaviors of neural dynamics so that the convergence time is shortened. The proposed algorithm using the hysteresis McCultoch-Pitts binary neuron found five Ramsey numbers. The analog CMOS sigmoid circuit with variable gain controls has been fabricated and tested using the SAC data acquisition board interfaced with a TMS 32010 processor. Hysteresis can be implemented by the positive feedback in the fabricated CMOS analog circuit.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Neural Network Implementation of the Moment-Preserving Technique and Its Application to Thresholding

shows the switching configuration corresponding to Fig. 3(b). Tables I and I1 summarize the simulation results, where the average number of iteration steps required for the convergence and the convergence frequency, and the average number of demands in the local minimum solutions are compared in seven models. Note that for each model, 100 simulation runs were performed from different initial va...

متن کامل

CMOS and Memristor Technologies for Neuromorphic Computing Applications

In this work, I present a CMOS implementation of a neuromorphic system that aims to mimic the behavior of biological neurons and synapses in the human brain. The synapse is modeled with a memristor-resistor voltage divider, while the neuron-emulating circuit (“CMOS Neuron”) comprises transistors and capacitors. The input aggregation and output firing characteristics of a CMOS Neuron are based o...

متن کامل

A Catalog of Elemental Neural Circuits

It is well-known that abstract neurons of the McCulloch-Pitts type compute input-output functions that are formally equivalent to suitably defined Boolean functions. Boolean functions, in turn, can be classified (up to isomorphism of underlying logical structure) into a limited number of basic types, each of which is non-isomorphic to each other type. These basic types are conveniently expresse...

متن کامل

Applying Analog Techniques in Digital CMOS Buffers to Improve Speed and Noise Immunity

A digital CMOS buffer circuit with a voltage transfer characteristic (VTC) with low threshold voltage detection, hysteresis, and high noise immunity is presented. The circuit is capable of restoring slow transition times and distorted input signals with a minimum delay penalty, offering at the same time high noise immunity to glitches induced either through capacitive coupling or from the power...

متن کامل

High Speed, Low Power Current Comparators with Hysteresis

This paper, presents a novel idea for analog current comparison which compares input signal current and reference currents with high speed, low power and well controlled hysteresis. Proposed circuit is based on current mirror and voltage latching techniques which produces rail to rail output voltage as a result of current comparison. The same design can be extended to a simple current comparato...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004