 At the Manchester Science Festival in 2012, mathematician Matt Parker and a team of volunteers worked together to build a domino binary adder which could add two three-bit inputs and produce a 4-bit output, which ran successfully.The following day, they attempted to build a 5-bit adder, which they completed, but the final test run had some errors (one due to signal bleed between chains of dominoes, and one timing issue).At American British Academy (ABA), Muscat, a team of Grade 12 students lead by Saatvik Suryajit Korisepati, supported by Alex Freyer, Zoltan Sojitory and rest of computers students had executed a 5-bit adder which will be able to add any numbers up to the sum of 63.