  The present work attempts both a review of previous methods for transferring
digital and symbolic computations in an analog or optical substrate and also to
offer certain alternatives not yet fully explored. The essential difference
from previous cases lies in the merging of general signal processing and
computational theory with some emphasis on the foundations of computations and
its logico-mathematical background and possible connections with fundamental
physical processes. The technologies proposed could among other things be used
to turn a standard RF network into a complete, autonomous holographic or
distributed computational medium. Some applications for Multi-Agent Systems are
also examined near the end.
