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Landauer's principle — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Landauer%27s_principle
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-06T00:16:59.998Z
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Landauer's principle — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Landauer%27s_principle (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_73dfd9020aec (Metraipolis archive dc_73dfd9020aec, sha256 28389117714e9e037216257d5ed2d8143689150bc85d5e98a6ec44523def37d0)

BibTeX

@misc{dc73dfd9020aec,
  title = {Landauer's principle — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Landauer%27s_principle},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_73dfd9020aec; sha256 28389117714e9e037216257d5ed2d8143689150bc85d5e98a6ec44523def37d0},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Landauer%27s_principle. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Landauer's principle is a physical principle pertaining to a lower theoretical limit of energy consumption of computation. It holds that an irreversible change in information stored in a computer, such as merging two computational paths, dissipates a minimum amount of heat to its surroundings. In the formulation of Charles H. Bennett, any logically irreversible manipulation of information, such as the erasure of a bit or the merging of two computation paths, must be accompanied by a corresponding entropy increase in non-information-bearing degrees of freedom of the information-processing apparatus or its environment; the entropy thus resides in the physical hardware and its surroundings, not in the bit as a logical entity. It is hypothesized that energy consumption below this lower bound would require the development of reversible computing. The principle was first proposed by Rolf Landauer in 1961.

Tema degli esploratori: ricerca e scienza aperta (deposito sistematico; ricerca «preprint»).
Fonte: Wikipedia in inglese, voce «Landauer's principle» — https://en.wikipedia.org/wiki/Landauer%27s_principle
Wikidata Q657486 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q657486
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Landauer%27s_principle?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1376477582, consultata il 2026-10-05T23:34:53.824Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: ec92ee72c9bb038e6a34f3ef3430261e14695bf285dbba01318a032e31118375