Logical N-AND Gate on a Molecular Turing Machine
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In Boolean algebra, it is known that the logical function that corresponds to the negation of the conjunction --NAND-- is universal in the sense that any other logical function can be built based on it. This property makes it essential to modern digital electronics and computer processor design. Here, we design a molecular Turing machine that computes the NAND function over binary strings of arbitrary length. For this purpose, we will perform a mathematical abstraction of the kind of operations that can be done over a double-stranded DNA molecule, as well as presenting a molecular encoding of the input symbols for such a machine.
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