A novel circuit to implement linear threshold logic for digital computations

We have developed and fabricated a linear threshold element which applies the sum of weighted-inputs to a threshold, similar to the function of a neuron. Such a logic structure is extremely powerful because a single structure can perform a variety of functions ranging from standard Boolean operations (AND, OR, etc) to more complex operations like Majority and Compare. This particular implementation, using standard MOSFETs, is highly reconfigurable, allowing for multiple inputs and multiple positive or negative weights without requiring floating gate transistors. The circuit is also attractive for reconfigurable logic because of its regular structure and flexibility of inputs. We have implemented this design using a standard 0.6μ process.