The IC Type
After that was done, IC Builder was used to construct the IC for the CGI program, called BUS.
The functions for getting and parsing the route information were integrated into the IC as actions.
The IC has the following state transition diagram:

The IC is self-recycling.
The user sends the "first" message to the IC. After the 61A information is processed, the IC sends the "second" message to itself, and so on until the start state is reached.