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Digital Logic Sim

​A minimalistic digital logic simulator · By Sebastian Lague

Can't figure out how to integrate 7-seg display into chip

A topic by juliagairn created Apr 29, 2025 Views: 244 Replies: 5
Viewing posts 1 to 5

Hi! I've been looking for a bit and can't find anything on this.

In the video on 7-segment displays, it seems like there's some functionality there that I can't find. Specifically:

  • I can't find an "8-segment display" (7-seg + sign) in the library, and
  • I can't figure out how to integrate a display into the graphic of a chip.

Is there something I'm missing? Were these features removed between 2022 and now? Some secret third option? Any help would be greatly appreciated.

first, the minus sign was removed(don't know why)

second, when saving a chip, there are usually 3 options: Cancel, Customize, and Save

If you click Customize, you can change the size of the chip and the color. But you can also add any LED's, screens, or segment displays.

I figured out that you can use 2 LED's as a minus sign and arrange the LED's as a minus sign to the left of the    segment display

I just use another 7-segment display. This way it looks consistent if you implement ripple blanking with the sign.

Where IS the OLD 7-Segment? the new one uses 1-bit signals per-segment, and it sucks cuz idk how to make a counter-adapter for it (I'm on the 256-Byte RAM video, and he uses a display with a natural 8 Bit plug, which no longer exists.)

That video was made just before the update that removed the old 7-segment display. The new version makes the display turn blue when it's negative, but I think we can both agree that's not good enough to show the number is negative. Like other users before me, I use an extra 7-segment display to make my own makeshift negative sign.