Research Article

A Hardware Design of Neuromolecular Network with Enhanced Evolvability: A Bioinspired Approach

Figure 5

Transition rules of a PU. S, I, and W indicate a signal from a highly activated C1-, C2-, and C3-type PU, respectively. For example, if C1-type PU in the state q0 receives an I signal it will enter the moderately activated state q2. If it receives a W signal it will enter the more activated state q3. For example, a C1-type PU in the state q0 will enter the less active state q1 when it receives a signal from a neighboring C3-type PU (i.e., signal W). We note that if a PU does not receive a stimulus before its next update time, it will go into state q1 if it was in state q2, or enter state q0 if it was in q1.
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(a) C1- type PU
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(b) C2- type PU
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(c) C3- type PU