Cyclic metamorphic memory for cellular bio-inspired electronic systems

Abstract

In nature the DNA contained in each cell of an organism, is in fact a memory map that, through the transcription of its genes, describes the unique characteristics of the individual. Similarly in an artificial embryonic cell, used to construct electronic systems, a memory map and its relevant gene also describes and determines the functionality of each cell and, collectively, the entire system. This paper proposes a new variable size memory map based on a novel and efficient gene selection algorithm that no longer uses the hitherto common address decoding approach to access some fixed memory space. Instead, it applies the principle of cyclic metamorphic gene selection of the artificial DNA memory. A further benefit of the approach is that the functionality of the system can also be easily altered through genetic operators or variable memory space environment for enhanced behaviour. It is suitable therefore for the implementation of GA processes.

Embryonic electronics: State of the art and future perspective

“…Since not all the configuration bits are used in all the cells, it is possible to literally eliminate bits of memory. In [9], a cyclic metamorphic process is employed to create the required artificial DNA, and offers a minimum gene approach. It reduces the overall size of the genome by using a variable length memory which is possible to use different length of genes for each column of the array.…”

Partial-DNA cyclic memory for bio-inspired electronic cell

“…Each cell only stores its own genes and the expressed genes of several neighboring cells, and the stored gene number is determined according to the number of the idle row/columns in the embryonics array. Cyclic metamorphic memory [10] is another partial genome memory proposed by researchers at Shiraz University. Likes row/column memory, this memory stores those genes expressed by the particular column, and the need for address generation is eliminated through the genes' cyclic shift.…”

“…The total size of prokaryotic memory in chip is increased in a linear way. Inspired by the cyclic memory [16,17], cyclic metamorphic memory [10] and prokaryotic memory [11][12][13], a novel genome memory structure named partial-DNA cyclic memory is presented in this paper. Each cell only stores the expressed genes of itself and several follow-up adjacent cells, and the gene number in cells can be set by users in design process and not limited to the scales of target circuit and embryonics array.…”