Help on momentary push switches in series.

That's what I thought.
And I came to the conclusion that with a resolution of 1024 on the ADC in theory you could wire up the circuit to implement a binary progression for 12 buttons (No button =0, button 1=1 button 2=2, button 3=4, button 4=8 etc.), in practice, that is unfeasible as the difference between button presses will be only 1 value, or 0.00488 V (e.g. buttons 1,2,3 pressed = 7 [0.034 V] ; button 4 only = 8 [0.039 V]) which even with very tight tolerance resistors will be sensitive to tiny supply voltage fluctuations.

If someone can prove my logic wrong and give me an example of such a circuit I will be very happy.

Incidentally, I read a long time ago that the very first digital computers designs were based on the decimal system (the most intuitive to us humans) but they never got to work in practice because of the unreliability of detecting those differences in voltage. The binary system was eventually used because it's much easier to detect No-voltage/voltage.

I feel like I re-discovered the wheel.