The logic to light the characters appears in the bottom half of the simulation window. The top half of the simulation window implements a modulo-11 counter. In other words, the counter increments up to 11 then resets. This counter is used to determine which character we should output to the 7-segment display. The truth table for the design can be found in the Design Spreadsheet: https://docs.google.com/spreadsheets/d/1-h9pBYtuxv6su2EC8qBc6nX_JqHXks6Gx5nmHFQh_30/edit
Simply turn on and watch the characters on the 7-segment display. If needed, flip Input (zero-indexed) ON to reset the state machine counter.
|1||Reset Counter||segment b|
|3||Clock Disable (Test Mode)||segment d|
|4||Test Logic A||segment e|
|5||Test Logic B||segment f|
|6||Test Logic C||segment g|
|7||Test Logic D||N/A|