Since the “Binary to 7-segment display” IC shown in this simulator does not exist in real life, I am trying to simulate a combination of real components. The 74LS42 is a real IC that takes in a 4-bit binary number and decodes it for a display. It does not support numbers above 9 (binary 1001); instead of displaying hexadecimal, it displays mostly meaningless characters. Another difference that is not simulated here is that when displaying 6, the “a” LED is off, and when displaying 9, the “d” LED is off. So since it has similar outputs from 0-9 I used the built in IC to simulate it but I did not rely on its outputs from A to F even though they are correct. <br>
