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"Digital Electronics:  Fundamental Limits and Future Porspects" icon

Digital Electronics: Fundamental Limits and Future Porspects

I will review some old and some recent work on the fundamental (and not so fundamental) limits imposed by physics of electron devices on their density and power consumption. In particular, I will discuss: reversible computing, that allows one to beat the apparent Maxwell's-demon (E > kBTln2) and uncertainty-relation (E > /£n) "limits" for energy dissipation E per logic operation, and quantum-mechanical effects that impose limits on shrinking of both field-effect and single-electron transistors. I will argue that the impact of scaling limitations is grossly exacerbated by the economics of the current microcircuit fabrication paradigm. This problem may be overcome by transfer from the purely CMOS technology to hybrid "CMOL" integrated circuits. Such a circuit would combine an advanced (e.g.,... Show More
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