Homopolymer encoded nucleic acid memory

A method of synthesizing a plurality of nucleic acid memory strands, the method comprising:

• providing an array of two or more substrate-linked nucleic acids with addressable delivery of activation energy to each of the substrate-linked nucleic acids;
• extending one or more of the substrate-linked nucleic acids with a homopolymer tract of two or more repeating nucleotides by delivering addressable activation energy to one or more of the substrate-linked nucleic acids in the presence of a plurality of blocked nucleotide analogs and a template-independent polymerase, wherein the template-independent polymerase incorporates unblocked nucleotide analogs and not blocked nucleotide analogs and wherein the addressable activation energy converts the blocked nucleotide analogs into unblocked nucleotide analogs.