1. A nonvolatile nanotube memory cell comprising: a nanotube field effect transistor comprising: a first nanotube fabric article, the first nanotube fabric article comprising a semiconducting nanotube fabric and having a drain region and a source region in a spaced relation to one another, wherein the spaced relation defines a channel region in the first nanotube fabric article; a gate node electrically coupled to the first nanotube fabric, wherein the gate node modulates the conductivity of the channel region to form or unform a first electrically conductive channel between the source and drain regions in response to a first electrical stimulus; and a nanotube switching element comprising: a second nanotube fabric article electrically coupled to the source region of the nanotube field effect transistor and an electrode; the second nanotube fabric article forming or unforming a second electrically conductive channel between the source region and the electrode in response to a second electrical stimulus on at least the electrode; wherein the forming of the first and second electrically conductive channels corresponds to at least a first memory state of the nanotube memory cell; wherein the unforming of the first and second electrically conductive channels corresponds to at least a second memory state of the nanotube memory cell.