Dissipation and noise immunity in computation and communication

Details Dissipation and noise immunity in computation and communication Dissipation and noise immunity in computation and communication

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.335..779l&link_type=abstract

Nature (ISSN 0028-0836), vol. 335, Oct. 27, 1988, p. 779-784.

Mathematics

Logic

61

Communication Theory, Digital Computers, Energy Dissipation, Noise Measurement, Channels (Data Transmission), Energy Consumption, Logic Design, Time Dependence

Scientific paper

Energy requirements in computation, measurement, and the communications channel are discussed. It is shown that reversible computers which carry out each step without discarding information can, in principle, dissipate arbitrarily small amounts of energy per step if the computation is carried out sufficiently slowly. Energy requirements in measurement and communications are reexamined in light of this, and it is concluded that here, too, only those steps that discard information have a lower limit on energy consumption. Such steps can be avoided in the transmission of information.

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