The project simply uses an AND gate to power A,B,C and D of the 7 segment display, and the other inputs power the remainder of the display.
Test each input and check which lights trigger on the 7-segment display
Just the 7 segment display and switches
# | Input | Output | Bidirectional |
---|---|---|---|
0 | IN0 | OUT0 | |
1 | IN1 | OUT1 | |
2 | OUT2 | ||
3 | OUT3 | ||
4 | IN4 | OUT4 | |
5 | IN5 | OUT5 | |
6 | IN6 | OUT6 | |
7 | IN7 | OUT7 |