Home built breadboard computer

[Homer J Simpson]

Channel -

https://www.youtube.com/channel/UC7jyKIy-dAMaD2uQP4a4U0w/videos

[KE5FX]

Meth is a hell of a drug...

[rdl]

Wow. That takes "rat's nest" to a whole new level.

[Wh1sper]

Don't believe it, fake news!

[VinzC]

Don't believe it, fake news!

Uh? why's that?

A youtuber named Ben Eater has successfully built a small computer on breadboards. Far less messy but it is plausible. This guy doesn't *show* any hint nor details on what "sound" or "graphics" are in his own design... apart from the schematics, which are available on GitHub. Did you check them?

[Wh1sper]

My assessment is based on my gut feeling. I just can't imagine a reliably functioning circuit on a breadboard that is so complex. It's not only the many connectors, but also the high frequencies, it must be teeming with spikes.
I just skimmed the video, it doesn't seem to be 100% sure that the things shown are really from Breadboard.
Edit: Just for a binary counter shown there is needed a far lee components :-)

[VinzC]

If the frequency can be inferred from the video, it definitely does not qualify for "high" frequency(ies). Given the speed the LEDs change, it's barely in the kilohertz range (and I feel generous). So with that in mind *and* the fact that "graphics" is only a bunch of LEDs, it's quite plausible to find a working breadboard messy computer like this one...

[Wh1sper]

Anyway I am with you  it is an impressive work.
About the sense we don't speak 

[VinzC]

 

[Kleinstein]

From the few parts one can actually recognize, the breadboards look rather empty, with only very few parts.
The other strange point is the so called programming mode. The switches are buried  so much to being not usable.   

Having a fake counter is easy.

How complicated a self made CPU is, depends on the parts used: a system with microcode from an EEPROM and a few more higher integration parts, it sounds plausible. The actual CPU might be only a small part - maybe an µC simulating one.