Probably using something other than synchronously clocked digital gates. Analog neural networks and the like: https://www.analog.com/en/analog-dialogue/articl

Probably using something other than synchronously clocked digital gates. Analog neural networks and the like: https://www.analog.com/en/analog-dialogue/articles/considering-multipliers-part-1.html# https://www.analog.com/en/analog-dialogue/articles/consideri... ...or reversible computation... https://cqi.inf.usi.ch/qic/80_Toffoli.pdf https://cqi.inf.usi.ch/qic/80_Toffoli.pdf https://calculemus.org/logsoc03/materialy/ConservativeLogic.pdf https://calculemus.org/logsoc03/materialy/ConservativeLogic....