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Of course your failure to add a LM555 will eventually draw comment regardless of intended era. More fun than an FPGA? Oh thems fightin’ words round these here parts and this here crowd.

Well that’s German and definitely mixes tech. +Grain of wheat bulbs : I also have “Glühbirnchen”, look at the video ? Were expensive and if were used to make 7-segment display would’ve been acceptable but noooo someone has to use a numi tube. (and the first LED effects were witnessed in the 30s) +LEDs were not cheating : the “funky proto” uses vintage, 1st generation Soviet LEDs ? Bakelite is still available in sheets and barrier strips.? +Perf board : For the Protozzzz ? I couldn’t find suitable FR2/Bakelite ? Tubes suck then they filled with exotic gasses and then suck power until they blow out filament. Hot would be accurate with that many diode tubes. +Diode tubes suck unless you want high-speed, HOT switching. +What silicon crap ? D9K means Soviet Glorious Germanium Diode (and is historically almost accurate, it’s point-contact, they came before serious, well-chararcterised and cheap silicon diodes appeared in the 60s) That’s four tubes and hundreds of diodes for the 16-bit version, but the good news is all of these modules are identical, vastly simplifying the construction of the display panel of a homebrew computer. Right now, has one module on a slim-profile protoboard that should stack easily enough for an 8 or even a 16-bit wide bus. Yes, it’s hexadecimal, but that’s just what you do when you’re building your own computer. This module accepts four bits as an input and uses a clever arrangement of diodes to turn those four signals into the digits 0-F. The best solution to this problem is using Numitrons - seven segment Nixies, basically - and doing it all with relays and diode steering. The better solution to this is a hexadecimal display. Sure, a bank of LEDs will work, but then you have to count to F. With this, there’s a recurring problem of displaying the status of a bus. The inspiration for this build comes from homebrew computing. He’s building a hexadecimal display module using only relays and diodes. That’s exactly what is doing with a pile of surplus Soviet components, a bunch of bodge wire, and exactly zero transistors. That’s a noble goal, but it also doesn’t mean you can’t have fun. We want to see hardware creators change the world with microcontrollers and breadboards. The Hackaday Prize is all about Building Hope.