Recently the researchers have revealed a "DNA computer" having unique complexity, which can calculate square roots. The calculation done by the DNA computer is by using chemical reactions to solve difficulty in which a number of DNA strands act as "bits".
This has been reported in Science that the work requires 130 strands of DNA so as to work in a cascade of programmed chemical changes. On Thursday the researchers has reported in the journal Science that the system is comprised of 74 strands of DNA that forms 12 logic gates comparable to those in a silicon-based computer. The speed of the operating the system is a little more slowly than a conventional computer: for each calculation it takes about 10 hours.
Till now the research design has yet to be made for rival traditional electronics, however it will allow computing to occur in biological contexts, expected to be in body also.
Leonard Adelman has proposed the first DNA in the year 1994. This was designed to solve the problem which is known as the "travelling salesman problem". This determines the shortest way that joins a number of geographically separated locations.