In the same way, QB0 stands for 8 bits of Q0.0-Q0.7).
Take the data you provided as an example:
When I0.0 is connected, QB0 = 0 = 2 # 000000000, then Q0.0-Q0.7 are all disconnected;
When I0. 1 is on, QB0 = 1 = 2 # 000000 1, then Q0.0 is on and Q0. 1-Q0.7 is off;
When I0.2 is connected, QB0=3=2#000000 1 1, then Q0.0-Q0. 1 is connected and Q0.2-Q0.7 is disconnected;
When I0.3 is connected, QB0 = 5 = 2 # 000001kloc-0/,then Q0.0 and Q0.2 are connected, and Q0. 1 and Q0.3-Q0.7 are disconnected;