2016-02-232016-02-23200484-688-6101-4http://hdl.handle.net/11441/36334Reversibility plays a fundamental role when the possibility to per- form computations with minimal energy dissipation is considered. Many pa- pers on reversible computation have appeared in literature: the most famous are certainly the work of Bennett on (universal) reversible Turing machines and the work of Fredkin and To®oli on conservative logic. The latter is based upon the Fredkin gate, a reversible and \conservative" (according to a de¯nition given by Fredkin and To®oli) three{input/three{output boolean gate. In this paper we introduce energy{based P systems as a parallel and distributed model of computation in which the amount of energy manipulated and/or consumed during computations is taken into account. Moreover, we show how energy{based P systems can be used to simulate the Fredkin gate. The proposed P systems that perform the simulation turn out to be themselves reversible and conservative.application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccesshttps://idus.us.es/xmlui/handle/11441/36334