Abstract
There is an increasing interest in the development of nano digital circuits for molecular medicine. Several authors have analyzed some human body operations as equivalent to simple nano gates and their connections. The objective of this paper is to suggest an approach by which any human body function can be represented in the form of truth table. The Boolean expressions corresponding to these tables are realized with the help of nano digital circuits. Nano circuits can be realized using quantum-dot cellular automata (QCA) logic. This logic is implemented by Verilog representation. This representation is then converted into majority gates which lead to the nano digital circuits. This paper gives an approach by which multi-input multi-output Boolean functions are realized by nano digital circuits. Essentially, the approach is the design, simulation and implementation of various biosensors using nano technology.