Once you got a diode you can build transistors
once you have transistors you can build logic gates
once you build logic gates you can build super chips
They are probably not using silicon PN junctions but you get the point
Once you got a diode you can build transistors
once you have transistors you can build logic gates
once you build logic gates you can build super chips
They are probably not using silicon PN junctions but you get the point