Theory of grounded current switches and quaternary III circuits

According to the action principle of I/sup 2/L circuits, the theory of grounded current switches is proposed to describe the interaction between grounded transistors and current signals in I/sup 2/L circuits. In this theory, the switching state of transistor and the current signal are described separately by two different kinds of variables. Threshold comparison operations and grounding operations are introduced to connect these two kinds of variables. Based on discussions of the properties of operations and syntheses of functions, the design procedure is illustrated using the quaternary level restored complement gate and the quaternary quantizer as examples.<<ETX>>

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