Fig. 2. The transformation of chemical information into three-bit digital information via the Agg-CDN. The combination of two external chemical inputs, K+ and Code, can tune the Agg-CDN to various spectroscopically distinguishable states, including SD, SJ, SJH, SH, SDM, SJM, SJMH and SMH. And each state can be directly read out as the digital values using the normalized signal pattern.
