
The inputs are taken from 8 switches, are put through a series of AND and NOT gates, and turn on all the LEDs on the output. The LEDs will light up only if both the switches 6 and 7 are flipped on.
To test you simply have to turn on the switches 6 and 7 and see the LED turn on, any other switch won't have an effect and both 6 and 7 need to be turned on for the LEDs to be lit up.
Seven segment LED device
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | input 0 | output 0 | |
| 1 | input 1 | output 1 | |
| 2 | input 2 | output 2 | |
| 3 | input 3 | output 3 | |
| 4 | input 4 | output 4 | |
| 5 | input 5 | output 5 | |
| 6 | input 6 | output 6 | |
| 7 | input 7 | output 7 |