Current-based computer logic architecture

Details Current-based computer logic architecture Current-based computer logic architecture

H - Electricity

03

K

328/158

H03K 19/08 (2006.01) H03K 17/76 (2006.01) H03K 19/12 (2006.01)

Patent

CA 2016190

ABSTRACT Disclosed are basic forms of logic cells which can be readily provided and interconnected to perform many types of functions as desired. In accordance with the invention, a current- based logic cell includes one or more sections each of which may be a quite simple circuit and which in one embodiment may consist essentially of two diodes, a current source and connecting wires. In other embodiments a transistor and other components may be added. In each embodiment, a circuit is provided which includes an input wire to which a plurality of input signals may be applied, each input signal being in the form of a current, and processing circuitry which responds to the net current flow in the input wire to control development of an output signal. High switching speeds are achieved by using very small voltage swings, avoiding satura- tion and minimizing the effects of capacitances. Preferably, the circuit includes an output wire in which a current is developed which corresponds to the net current flow in the input wire of the section and which forms the output signal of the section. As a result, the input wire of a section may be directly connected to output wires of two or more other sections of the same or similar form, simplifying the interconnection of cells and reducing the length and shunt capacitances of connections between cells, to minimize propagation delays.

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