Build working computers out of marble runs! Build a new digital logic circuit each week using the GraviTrax marble run system.
source

Build working computers out of marble runs! Build a new digital logic circuit each week using the GraviTrax marble run system.
source
How does the track add? And why is it not made out of 2 xors, 2 ands, and one or?
Wow very nice Track πππ
Nice
ππ»cool