A random access memory cell includes first and second nanotube switching
elements and an electronic memory with cross-coupled first and second
inverters. Each nanotube switching element includes a nanotube channel
element having at least one electrically conductive nanotube, and a set
electrode and a release electrode disposed in relation to the nanotube
channel element to controllably form and unform an electrically
conductive channel between a channel electrode and an output node. Input
nodes of the first and second inverters are coupled to the set electrodes
and the output nodes of the first and second nanotube switching elements.
The cell can operate as a normal electronic memory, or in a shadow memory
or store mode to transfer the electronic memory state to the nanotube
switching elements. The device may later be operated in a recall mode to
transfer the state of the nanotube switching elements to the electronic
memory.