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Information technology has been a great success, but also a narrow one -it has marched along the narrow path of processing and transmitting information. While there is still more room to continue the march along this same path, there appears to be much greater rooms in the space to the left -acquiring information, to the right -executing on information, and on the "inside" -acquiring and executing on information inside human body. This new paradigm of information technology can be well served by advances in bio-nano electronics. By way of presenting specific examples, this short course introduces a few basic concepts, methods and recent advances on three fronts of bio-nano electronics: (a) DNA directed self-assembly and growth of nanostructures (b) Real-time, scalable, reconfigurable, and direct read-out of bio-molecular signals (by nanoelectronic circuitry via programmable DNA wiring and addressing) (c) Intracellular probing, delivery, and exploration by nano-electrodes.