Figure 7.

Connector type 1 state transition table

Four stages of the 2-bit counter are shown. The state of 2-bit counter can be represented by the expression of $\mathbf{B}1\text{∗}{2}^0+\mathbf{B}2\text{∗}{2}^1$. B1 represents the first-bit binary state, and B2 represents the second-bit binary state. B1 and B2 are either “1” or “0”. On the right side of each quadrant in the orange outline, the connector transient state table shows how the first parity checker's output and the external signal input change the second parity checker's input. Each stage (each quadrant in the figure) contains four pieces of information: 1) The binary representation of the steady state for each bit (the first-bit is denoted by B1 and the second-bit is denoted by B2). 2) The initial state of the first-bit output and the input signal. 3) The connector transient state (the middle orange dashed circle). 4) The final state of the first-bit output and the input signal.