Figure 4

Multistable switches used in this work. The diagrams in the left show the node and edge representation and the diagrams at the right show the logic gate representation of each switch. The truth table of the functions are [1,1,0,1] for a and [0,1,0,0] for b, c, and d for binary numbers [00,01,10,11], respectively. In this work, the multistable switches are referred to as: (a) bistable switch (BS ), (b) mutual inhibition with zero positive feedback loops (MI00), (c) mutual inhibition with one positive feedback loop (MI0+), and (d) mutual inhibition with two positive feedback loops (MI++).