A chip that is constructed in three dimensions, thus allowing for hundreds or thousands of layers of circuitry. Three-dimensional chips are currently being researched and engineered by a variety of companies.
Articles on KurzweilAI.net that refer to Three-Dimensional ChipThe Web Within Us: Minds and Machines Become One. By Ray Kurzweil
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Chapter 1: The Evolution of Mind in the Twenty-First Century By Ray Kurzweil