Reliable Low-Power Nano Computations and Communications When von Neumann Augments Kolmogorov

نویسنده

  • Valeriu Beiu
چکیده

This paper presents a novel type of nanoarchitecture which is both device and circuit independent. The starting idea is that computations can be performed in three fundamentally different ways: entirely digital (using Boolean gates), entirely analog (using high precision analog circuits), or mixed (using both digital and low precision analog circuits). The boundaries between these are sometimes very thin. As an example, a threshold logic gate is already mixed, i.e. even if the inputs and the output are Boolean, the weighted sum of its inputs is a (low-precision) analog variable. It has already been suggested that one of the possible mixed approaches will be the most power efficient solution. Still, the main disadvantages of using analog circuits are: (i) their more complex (handcrafted) design, and (ii) their (expected) lower reliability (signal-to-noise / precision). These will be exacerbated by scaling. We will show here how both disadvantages could be tackled. A constructive solution for Kolmogorov’s superposition or a (multi-threshold) threshold logic synthesis, could be used for the automatic synthesis of the (very) low-precision analog parts. Digital or threshold logic circuits could be used to compensate for the accumulation of noise in the cascaded (very) low precision analog circuits. These digital or threshold logic circuits will also contribute to von Neumann’s multiplexing schemes, hence not only compensating for the accumulation of noise, but also increasing the overall fault-tolerance of the system. A few examples will show how this architectural approach could be mapped on top of a given

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تاریخ انتشار 2004