This reference text is the result of an evolving course at the University of Southern California on CMOS/Nano Neuromorphic Circuits, taught at graduate level. The book covers early neuromorphic circuits and focuses on circuits in the BioRC project, with examples taken from other concurrent projects. The text begins with an introduction to human neuroscience. It summarizes a short history of neuromorphic circuits and presents an extended discussion of the challenges of building an artificial brain with analog neuromorphic circuits. An approach to neuromorphic circuits taken from Parker's BioRC project follows. A review of relevant mathematical models of neural behavior is covered, as well as basic neural circuits modeling neurons and synapses. The text contains more advanced neuromorphic circuits and a collection of BioRC approaches to nanotechnologies.