Logic Gates and Circuits

This chapter contains sections titled: Introduction Information Processing Based on Electronics Biological Information Processing The Chemical Computer Fundamental Concepts of Logic Gates Molecular Switches as Logic Gates Input/Output Signals Reconfiguration, Superposition, and Integration Basic Logic Gates YES and NOT Gates OR and NOR Gates AND and NAND Gates XOR and XNOR Gates INH Gate Combinational Logic Circuits EnOR and EnNOR Functions Other Functions Signal Communication Between Molecular Switches Half-Adder and Half-Subtractor Full-Adder and Full-Subtractor A Molecular 2-to-1 Digital Multiplexer Sequential Logic Circuits Molecular Memories A Molecular Keypad Lock Neural-Type Systems A Logic Device under Control of an Intrinsic Threshold Mechanism A Perceptron-Type Scheme Logic Devices Based on Biomolecules Heterogeneous Systems Applications of Molecular Logic Conclusions