Noise-assisted Multibit Storage Device
  In this paper we extend our investigations on noise-assisted storage devices through the experimental study of a loop composed of a single Schmitt trigger and an element that introduces a finite delay. We show that such a system allows the storage of several bits and does so more efficiently for an intermediate range of noise intensities. Finally, we study the probability of erroneous information retrieval as a function of elapsed time and show a way for predicting device performance independently of the number of stored bits. 
G. Bellomo and G. A. Patterson and P. I. Fierens and D. F. Grosz
nlin.AO