DNA as computer (possibilities of (bio)molecular computing)

It should come as no surprise to modern biologists that computer scientists are finding ways to use the capacity of DNA to encode digital information. Coming to think of it, Gregor Mendel's laws of genetics are manifestly digital in character. And at the current level of understanding in fundamental physics, nature is explicitly digital (or discrete) at the deepest level. Use of DNA ligation and electrophoresis to extract the result of mapping to a graph DNA segments are explained. The experiment was carried out by Adleman et al recently.