A macroscopic view of self-replication

In 1953, Crick and Watson published their landmark paper revealing the detailed structure of the DNA double helix. Several years earlier, von Neumann embedded a very complex configuration, a universal interpreter-copier, into a cellular array. Astoundingly, the structure of this configuration, able...

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Bibliographic Details
Published in:Proceedings of the IEEE 2004-12, Vol.92 (12), p.1929-1945
Main Authors: Mange, D., Stauffer, A., Peparaolo, L., Tempesti, G.
Format: Article
Language:English
Subjects:
Anniversaries
Arrays
Automata
Bioinformatics
Cellular
Cellular automata
Computation
Deoxyribonucleic acid
Digital
DNA
Electronic circuits
emergence
Genomics
John von Neumann
Landmarks
Lindenmayer system (L-system)
Logic design
Organisms
self-replicating loop
Self-replicating machines
self-replication
Studies
Thumb
Tom Thumb algorithm
Turing machines
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Summary:In 1953, Crick and Watson published their landmark paper revealing the detailed structure of the DNA double helix. Several years earlier, von Neumann embedded a very complex configuration, a universal interpreter-copier, into a cellular array. Astoundingly, the structure of this configuration, able to realize the self-replication of any computing machine, including a universal Turing machine, shares several common traits with the structure of living cells as defined by Crick and Watson's discovery. To commemorate the 100th anniversary of von Neumann's birth, this paper presents a macroscopic analysis of self-replication in computing machines using three examples. After describing self-replication in von Neumann's universal interpreter-copier, we will revisit the famous self-replicating loop designed by Langton in 1984. In order to overcome some of the major drawbacks of Langton's loop, namely, its lack of functionality and the fact that it is ill-adapted for a realization in electronic circuits, we present a novel self-replicating loop, the Tom Thumb loop. Endowed with the same capabilities as von Neumann's interpreter-copier, i.e., the possibility of replicating computing machines of any complexity, our loop is moreover specifically designed for the implementation of self-replicating structures in programmable digital logic.
ISSN:0018-9219
1558-2256
DOI:10.1109/JPROC.2004.837631