Editorial to Special Issue DAC 2006 This special issue of the ACM Journal of Emerging Technologies in Computing Systems is based on papers presented at the 2006 IEEE/ACM Design Automation Conference (DAC). DAC has recently expanded its focus to include emerging technologies for computing and sensing systems. This broadened focus has been motivated in part by the roadblocks that loom ahead for the continued scaling of Silicon CMOS technology. New materials, new device geometries, and further downscaling of device dimensions and supply voltages are together leading to a signi cant escalation in manufacturing cost as well as unpredictable circuit performance due to process variability. As a result, experts are predicting that CMOS scaling will stop in the near future, perhaps as early as 2015. Alternative computing technologies being explored today include carbon nanotubes, nanowires, molecular transistors, spin-based and single-electron devices, DNA-based devices, and hybrid circuits made from mainstream CMOS and newer nanodevices. Together with advances in manufacturing techniques, new design paradigms based on these emerging technologies are being explored. Research groups worldwide are addressing various aspects of circuit and system design such as modeling, analysis, defect tolerance, and synthesis. Another motivation for expanding DACâs focus lies in the
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