1. A carbon nanotube electronic circuit utilizing a differential amplifier, comprising: a single carbon nanotube; a first plurality of electrical conductors in contact with the carbon nanotube; a second plurality of electrical conductors electrically insulated from the carbon nanotube and each of the second plurality of conductors configured to exert an electric field on the carbon nanotube forming a gate of an associated field effect transistor; a signal input circuit formed on the carbon nanotube comprising a first input portion and a second input portion, the first input portion comprising a first field effect transistor that is electrically responsive to a first incoming signal; at least one electrical load comprising a carbon nanotube actuator, the carbon nanotube actuator comprising electrical terminals and responsive to electrical conditions at its terminals, and a current source formed on the carbon nanotube from at least one second field effect transistor, the current source electrically connected to the signal input circuit, wherein the electrical load is connected to the signal input circuit and wherein the at least the signal input circuit and current source together operate as a differential amplifier configured to operate the actuator responsive to the incoming signal.