Abstract: The invention relates to an electronic system for emulating the chain of the DNA structure of a chromosome. The invention is characterised in that it includes means for the binary coding of the four types of nucleotides (A, G, C, T) that form the strands, such that the nucleotides that form complementary links are assigned complementary codes. The invention also includes units for storing (1) a code of a nucleotide and of the complementary thereof, said storage units being connected in series in order to form the chain of nucleotides that form each strand of a DNA chain and, in this way, to obtain the electronic structure thereof and allow selective access to a nucleotide, to a strand and to the two strands forming the DNA chain. The invention can be applied to any problem that can be represented with a graph which is coded in the storage units (1), in order to solve currently unsolvable problems relating to the calculation of paths in a parallel manner and in polynomial time.