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Chemical computing, a research sub-area of unconventional computing, usually aims at mimicking simple Boolean logic operations performed by chemical systems. In most cases chemical logic operations are activated by external physical signals (eg light, magnetic field, or electrochemical potential) and, sometimes, by chemical signals (eg, pH changes). The output signals generated by the chemical logic systems are usually read by optical methods (absorbance or fluorescence spectroscopy) or by electrochemical means (currents or potentials generated on electrodes or field-effect transistors). Normally, the physical nature of the input and output signals is different, thus making the assembly of multi-component logic networks difficult or impossible. Usually, the complexity of the chemical computing systems does not exceed a single Boolean logic operations, such as AND or OR. Most of the problems hardly …