This guy spent four years building a replica of the 1964 prototype for the Block I Apollo Guidance Computer, then posted extensive, step-by-step build-notes. He's even written a C++ simulator for it!
Link
(Thanks, Bernhard!)
This guy spent four years building a replica of the 1964 prototype for the Block I Apollo Guidance Computer, then posted extensive, step-by-step build-notes. He's even written a C++ simulator for it!
Link
(Thanks, Bernhard!)