One thing that struck me about the Z1 was how closely it paralleled things I'd expect to see in a silicon implementation of a CPU: I recall seeing: different p

One thing that struck me about the Z1 was how closely it paralleled things I'd expect to see in a silicon implementation of a CPU: I recall seeing: different physical blocks for different logic, a big regular blog for the memory and other blocks for ALU, etc, addressing handled by column and row selection lines, evaluating bit values by putting a signal onto the data line and seeing whether the value changes... But all implemented with mechanical linkages (so a signal is a pull of a rod, a connection is a hooking of a rod onto some other linkage, etc.