A neural network including a number of synaptic weighting elements, and a neuron stage; each of the synaptic weighting elements having a respective synaptic input connection supplied with a respective input signal; and the neuron stage having inputs connected to the synaptic weighting elements, and being...http://www.google.co.uk/patents/US6032140?utm_source=gb-gplus-sharePatent US6032140 - Low-voltage, very-low-power conductance mode neuron
