In short the humble printed circuit board (PCB) is just holding us back. Instead it has been proposed that it would be possible to essentially use a silicon circuit board instead.

Andreessen Horowitz leads a Series A investment in Diode Computers, which translates printed circuit board layouts into code.

A step-down PCB is simply a multilayer PCB whose board thickness is reduced (stepped down) in a few places. The step-down is ...